./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-4.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_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB --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 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:27:33,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:27:34,003 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-27 23:27:34,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:27:34,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:27:34,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:27:34,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:27:34,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:27:34,052 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:27:34,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:27:34,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:27:34,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:27:34,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:27:34,053 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:27:34,053 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:27:34,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:27:34,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:27:34,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:27:34,054 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:27:34,054 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:27:34,054 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-27 23:27:34,054 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:27:34,055 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:27:34,056 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:27:34,056 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:27:34,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:34,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:34,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:34,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:34,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:34,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:27:34,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:27:34,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:27:34,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:27:34,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:27:34,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:27:34,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:27:34,059 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_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 6b28fb6889d0d92f72216f98e0edff81bbc7a955814acfd4caad3db76eb7ead3 [2024-11-27 23:27:34,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:27:34,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:27:34,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:27:34,438 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:27:34,438 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:27:34,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-27 23:27:37,605 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/data/b243bacea/b26bb5e472e241e1962b021f8630e309/FLAG1701afd2d [2024-11-27 23:27:37,944 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:27:37,945 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2024-11-27 23:27:37,960 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/data/b243bacea/b26bb5e472e241e1962b021f8630e309/FLAG1701afd2d [2024-11-27 23:27:38,185 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/data/b243bacea/b26bb5e472e241e1962b021f8630e309 [2024-11-27 23:27:38,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:27:38,192 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:27:38,194 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:38,194 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:27:38,199 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:27:38,201 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,204 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d17f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38, skipping insertion in model container [2024-11-27 23:27:38,204 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,228 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:27:38,477 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-27 23:27:38,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:38,492 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:27:38,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:38,537 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:27:38,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38 WrapperNode [2024-11-27 23:27:38,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:38,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:38,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:27:38,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:27:38,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,603 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 175 [2024-11-27 23:27:38,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:38,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:27:38,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:27:38,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:27:38,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,652 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-27 23:27:38,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,668 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,669 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,681 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:27:38,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:27:38,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:27:38,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:27:38,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (1/1) ... [2024-11-27 23:27:38,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:38,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:38,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:27:38,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:27:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 23:27:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 23:27:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:27:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:27:38,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:27:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:27:38,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:27:38,779 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:27:38,919 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:27:38,921 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:27:39,514 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:27:39,514 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:27:39,901 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:27:39,902 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-27 23:27:39,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:39 BoogieIcfgContainer [2024-11-27 23:27:39,902 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:27:39,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:27:39,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:27:39,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:27:39,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:27:38" (1/3) ... [2024-11-27 23:27:39,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f9a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:39, skipping insertion in model container [2024-11-27 23:27:39,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:38" (2/3) ... [2024-11-27 23:27:39,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f9a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:39, skipping insertion in model container [2024-11-27 23:27:39,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:39" (3/3) ... [2024-11-27 23:27:39,915 INFO L128 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2024-11-27 23:27:39,933 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:27:39,935 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unroll-cond-4.wvr.c that has 3 procedures, 51 locations, 1 initial locations, 3 loop locations, and 20 error locations. [2024-11-27 23:27:39,936 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:27:40,039 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:27:40,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 56 transitions, 126 flow [2024-11-27 23:27:40,154 INFO L124 PetriNetUnfolderBase]: 6/54 cut-off events. [2024-11-27 23:27:40,157 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:27:40,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 54 events. 6/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 150 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 42. Up to 2 conditions per place. [2024-11-27 23:27:40,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 56 transitions, 126 flow [2024-11-27 23:27:40,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 53 transitions, 118 flow [2024-11-27 23:27:40,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:27:40,198 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;@567237e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:27:40,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-27 23:27:40,205 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:27:40,206 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-27 23:27:40,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-27 23:27:40,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:40,208 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:27:40,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:40,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash 599729, now seen corresponding path program 1 times [2024-11-27 23:27:40,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133581911] [2024-11-27 23:27:40,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:40,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:40,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:40,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:40,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133581911] [2024-11-27 23:27:40,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133581911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:40,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:40,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-27 23:27:40,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051132831] [2024-11-27 23:27:40,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:40,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:40,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:40,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:40,620 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:40,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:40,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:40,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:40,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:40,941 INFO L124 PetriNetUnfolderBase]: 182/445 cut-off events. [2024-11-27 23:27:40,941 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-27 23:27:40,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 445 events. 182/445 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2489 event pairs, 119 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 670. Up to 293 conditions per place. [2024-11-27 23:27:40,952 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 27 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-27 23:27:40,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 50 transitions, 170 flow [2024-11-27 23:27:40,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:40,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:27:40,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-27 23:27:40,971 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6130952380952381 [2024-11-27 23:27:40,973 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 118 flow. Second operand 3 states and 103 transitions. [2024-11-27 23:27:40,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 50 transitions, 170 flow [2024-11-27 23:27:40,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 50 transitions, 162 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:27:40,999 INFO L231 Difference]: Finished difference. Result has 49 places, 50 transitions, 108 flow [2024-11-27 23:27:41,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, 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=108, PETRI_PLACES=49, PETRI_TRANSITIONS=50} [2024-11-27 23:27:41,008 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2024-11-27 23:27:41,010 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 50 transitions, 108 flow [2024-11-27 23:27:41,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:41,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:41,010 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-27 23:27:41,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:27:41,011 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:41,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:41,012 INFO L85 PathProgramCache]: Analyzing trace with hash 599730, now seen corresponding path program 1 times [2024-11-27 23:27:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:41,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138070993] [2024-11-27 23:27:41,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:41,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:41,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:41,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:41,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138070993] [2024-11-27 23:27:41,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138070993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:41,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:41,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:41,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265258548] [2024-11-27 23:27:41,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:41,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:41,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:41,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:41,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:41,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:41,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 50 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:41,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:41,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:41,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:41,790 INFO L124 PetriNetUnfolderBase]: 183/448 cut-off events. [2024-11-27 23:27:41,791 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-27 23:27:41,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 448 events. 183/448 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2500 event pairs, 119 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 736. Up to 298 conditions per place. [2024-11-27 23:27:41,795 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 30 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-27 23:27:41,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 182 flow [2024-11-27 23:27:41,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:27:41,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-11-27 23:27:41,797 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-11-27 23:27:41,797 INFO L175 Difference]: Start difference. First operand has 49 places, 50 transitions, 108 flow. Second operand 3 states and 106 transitions. [2024-11-27 23:27:41,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 182 flow [2024-11-27 23:27:41,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:27:41,800 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 123 flow [2024-11-27 23:27:41,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-11-27 23:27:41,803 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2024-11-27 23:27:41,804 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 123 flow [2024-11-27 23:27:41,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:41,804 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:41,804 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-27 23:27:41,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:27:41,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:41,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:41,805 INFO L85 PathProgramCache]: Analyzing trace with hash 576359816, now seen corresponding path program 1 times [2024-11-27 23:27:41,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:41,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147353129] [2024-11-27 23:27:41,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:41,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:42,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147353129] [2024-11-27 23:27:42,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147353129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:42,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2677287] [2024-11-27 23:27:42,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:42,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:42,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:42,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:42,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:27:42,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:42,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:27:42,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:42,392 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 [2024-11-27 23:27:42,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:42,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:42,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2677287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:42,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:42,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-27 23:27:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865282394] [2024-11-27 23:27:42,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:42,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:27:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:42,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:27:42,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:43,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:43,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 123 flow. Second operand has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 11 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:43,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:43,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:43,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:43,787 INFO L124 PetriNetUnfolderBase]: 183/447 cut-off events. [2024-11-27 23:27:43,787 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-27 23:27:43,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 447 events. 183/447 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2493 event pairs, 119 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 736. Up to 294 conditions per place. [2024-11-27 23:27:43,794 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 26 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-11-27 23:27:43,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 185 flow [2024-11-27 23:27:43,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:27:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-11-27 23:27:43,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2024-11-27 23:27:43,800 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 123 flow. Second operand 5 states and 153 transitions. [2024-11-27 23:27:43,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 185 flow [2024-11-27 23:27:43,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:27:43,805 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 136 flow [2024-11-27 23:27:43,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-27 23:27:43,806 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-11-27 23:27:43,806 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 136 flow [2024-11-27 23:27:43,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 25.363636363636363) internal successors, (279), 11 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:43,807 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:43,807 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-27 23:27:43,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:27:44,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:44,008 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:44,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash 689639549, now seen corresponding path program 1 times [2024-11-27 23:27:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:44,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614803940] [2024-11-27 23:27:44,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:44,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:44,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:44,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:44,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614803940] [2024-11-27 23:27:44,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614803940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:44,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:44,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:44,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809497734] [2024-11-27 23:27:44,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:44,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:44,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:44,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:44,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:44,149 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-11-27 23:27:44,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:44,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:44,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-11-27 23:27:44,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:44,315 INFO L124 PetriNetUnfolderBase]: 182/446 cut-off events. [2024-11-27 23:27:44,315 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-27 23:27:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 446 events. 182/446 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2481 event pairs, 119 based on Foata normal form. 1/351 useless extension candidates. Maximal degree in co-relation 736. Up to 296 conditions per place. [2024-11-27 23:27:44,321 INFO L140 encePairwiseOnDemand]: 53/56 looper letters, 29 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-11-27 23:27:44,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 192 flow [2024-11-27 23:27:44,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:44,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:27:44,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-27 23:27:44,327 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6369047619047619 [2024-11-27 23:27:44,327 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 136 flow. Second operand 3 states and 107 transitions. [2024-11-27 23:27:44,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 192 flow [2024-11-27 23:27:44,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 182 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-27 23:27:44,329 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 124 flow [2024-11-27 23:27:44,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-27 23:27:44,333 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2024-11-27 23:27:44,333 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 124 flow [2024-11-27 23:27:44,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:44,333 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:44,333 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:44,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:27:44,334 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:44,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:44,336 INFO L85 PathProgramCache]: Analyzing trace with hash -941018650, now seen corresponding path program 1 times [2024-11-27 23:27:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694388728] [2024-11-27 23:27:44,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:44,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:44,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:44,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694388728] [2024-11-27 23:27:44,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694388728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240103286] [2024-11-27 23:27:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:44,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:44,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:44,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:44,549 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-27 23:27:44,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 124 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:44,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:44,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-27 23:27:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:44,710 INFO L124 PetriNetUnfolderBase]: 182/385 cut-off events. [2024-11-27 23:27:44,710 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-27 23:27:44,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 385 events. 182/385 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1755 event pairs, 119 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 685. Up to 292 conditions per place. [2024-11-27 23:27:44,717 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 29 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2024-11-27 23:27:44,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 170 flow [2024-11-27 23:27:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 23:27:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-27 23:27:44,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45089285714285715 [2024-11-27 23:27:44,723 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 124 flow. Second operand 4 states and 101 transitions. [2024-11-27 23:27:44,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 170 flow [2024-11-27 23:27:44,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:27:44,726 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 108 flow [2024-11-27 23:27:44,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2024-11-27 23:27:44,727 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2024-11-27 23:27:44,727 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 108 flow [2024-11-27 23:27:44,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:44,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:44,727 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:44,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:27:44,731 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:44,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -941018649, now seen corresponding path program 1 times [2024-11-27 23:27:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144494075] [2024-11-27 23:27:44,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:45,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144494075] [2024-11-27 23:27:45,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144494075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:45,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713971541] [2024-11-27 23:27:45,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:45,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:45,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:45,052 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:45,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:27:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:45,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:27:45,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:45,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:45,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-27 23:27:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:45,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713971541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:45,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:45,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-27 23:27:45,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618616685] [2024-11-27 23:27:45,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:45,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:27:45,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:45,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:27:45,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:45,903 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:45,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 26.181818181818183) internal successors, (288), 11 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:45,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:45,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:45,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:46,259 INFO L124 PetriNetUnfolderBase]: 417/754 cut-off events. [2024-11-27 23:27:46,259 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-27 23:27:46,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1426 conditions, 754 events. 417/754 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3683 event pairs, 140 based on Foata normal form. 0/639 useless extension candidates. Maximal degree in co-relation 1401. Up to 378 conditions per place. [2024-11-27 23:27:46,265 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 51 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-27 23:27:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 66 transitions, 267 flow [2024-11-27 23:27:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:27:46,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-11-27 23:27:46,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-27 23:27:46,267 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 108 flow. Second operand 5 states and 176 transitions. [2024-11-27 23:27:46,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 66 transitions, 267 flow [2024-11-27 23:27:46,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:27:46,269 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 121 flow [2024-11-27 23:27:46,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-27 23:27:46,270 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-11-27 23:27:46,271 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 121 flow [2024-11-27 23:27:46,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.181818181818183) internal successors, (288), 11 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:46,271 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:46,271 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:46,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:46,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:46,476 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:46,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1870490960, now seen corresponding path program 1 times [2024-11-27 23:27:46,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405694490] [2024-11-27 23:27:46,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:46,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405694490] [2024-11-27 23:27:46,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405694490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:46,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445217574] [2024-11-27 23:27:46,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:46,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:46,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:46,826 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:46,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:27:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:46,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-27 23:27:46,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:47,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:47,070 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:47,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-27 23:27:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445217574] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:47,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:47,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-27 23:27:47,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320725346] [2024-11-27 23:27:47,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:47,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:27:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:47,200 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:27:47,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:47,398 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-27 23:27:47,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 121 flow. Second operand has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 11 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:47,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:47,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-27 23:27:47,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:47,871 INFO L124 PetriNetUnfolderBase]: 756/1283 cut-off events. [2024-11-27 23:27:47,871 INFO L125 PetriNetUnfolderBase]: For 161/209 co-relation queries the response was YES. [2024-11-27 23:27:47,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 1283 events. 756/1283 cut-off events. For 161/209 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6033 event pairs, 165 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2642. Up to 849 conditions per place. [2024-11-27 23:27:47,880 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 51 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-11-27 23:27:47,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 282 flow [2024-11-27 23:27:47,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:27:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-11-27 23:27:47,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-11-27 23:27:47,885 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 121 flow. Second operand 5 states and 150 transitions. [2024-11-27 23:27:47,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 282 flow [2024-11-27 23:27:47,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 275 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:27:47,890 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 158 flow [2024-11-27 23:27:47,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2024-11-27 23:27:47,891 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2024-11-27 23:27:47,891 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 158 flow [2024-11-27 23:27:47,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.727272727272727) internal successors, (228), 11 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:47,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:47,893 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:47,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:48,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:48,094 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:48,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1919198059, now seen corresponding path program 1 times [2024-11-27 23:27:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836998770] [2024-11-27 23:27:48,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:48,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:48,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836998770] [2024-11-27 23:27:48,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836998770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:48,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995218217] [2024-11-27 23:27:48,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:48,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:48,351 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:48,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:27:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:48,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:27:48,431 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:48,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:48,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:48,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-27 23:27:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:48,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995218217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:48,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:48,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-27 23:27:48,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631245681] [2024-11-27 23:27:48,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:48,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:27:48,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:48,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:27:48,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:27:49,822 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:49,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 158 flow. Second operand has 17 states, 17 states have (on average 25.764705882352942) internal successors, (438), 17 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:49,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:49,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:49,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:50,675 INFO L124 PetriNetUnfolderBase]: 1262/2336 cut-off events. [2024-11-27 23:27:50,675 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2024-11-27 23:27:50,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5074 conditions, 2336 events. 1262/2336 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 14027 event pairs, 626 based on Foata normal form. 0/2033 useless extension candidates. Maximal degree in co-relation 2689. Up to 1023 conditions per place. [2024-11-27 23:27:50,693 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 103 selfloop transitions, 14 changer transitions 0/128 dead transitions. [2024-11-27 23:27:50,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 128 transitions, 634 flow [2024-11-27 23:27:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:27:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2024-11-27 23:27:50,695 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2024-11-27 23:27:50,696 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 158 flow. Second operand 8 states and 296 transitions. [2024-11-27 23:27:50,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 128 transitions, 634 flow [2024-11-27 23:27:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 128 transitions, 612 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:27:50,702 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 270 flow [2024-11-27 23:27:50,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=270, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2024-11-27 23:27:50,703 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2024-11-27 23:27:50,705 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 270 flow [2024-11-27 23:27:50,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 25.764705882352942) internal successors, (438), 17 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:50,706 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:50,706 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:50,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:27:50,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-27 23:27:50,907 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:50,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:50,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2144321730, now seen corresponding path program 1 times [2024-11-27 23:27:50,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:50,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758189523] [2024-11-27 23:27:50,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:50,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:51,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758189523] [2024-11-27 23:27:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758189523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997030725] [2024-11-27 23:27:51,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:51,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:51,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:51,177 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:51,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:27:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:51,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:27:51,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:51,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:51,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-27 23:27:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:51,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997030725] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:51,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:51,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2024-11-27 23:27:51,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555033802] [2024-11-27 23:27:51,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:51,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:27:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:51,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:27:51,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:27:52,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-27 23:27:52,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 59 transitions, 270 flow. Second operand has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:52,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:52,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-27 23:27:52,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:52,762 INFO L124 PetriNetUnfolderBase]: 1580/2656 cut-off events. [2024-11-27 23:27:52,762 INFO L125 PetriNetUnfolderBase]: For 1694/1838 co-relation queries the response was YES. [2024-11-27 23:27:52,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 2656 events. 1580/2656 cut-off events. For 1694/1838 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14313 event pairs, 686 based on Foata normal form. 0/2353 useless extension candidates. Maximal degree in co-relation 4118. Up to 2029 conditions per place. [2024-11-27 23:27:52,784 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 82 selfloop transitions, 15 changer transitions 0/102 dead transitions. [2024-11-27 23:27:52,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 593 flow [2024-11-27 23:27:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:27:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:27:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-11-27 23:27:52,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-27 23:27:52,786 INFO L175 Difference]: Start difference. First operand has 59 places, 59 transitions, 270 flow. Second operand 7 states and 216 transitions. [2024-11-27 23:27:52,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 593 flow [2024-11-27 23:27:52,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 102 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:27:52,793 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 338 flow [2024-11-27 23:27:52,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=338, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2024-11-27 23:27:52,794 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-11-27 23:27:52,794 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 338 flow [2024-11-27 23:27:52,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.357142857142858) internal successors, (285), 14 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:52,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:52,794 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:52,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:27:52,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:52,999 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:53,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -787480619, now seen corresponding path program 2 times [2024-11-27 23:27:53,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:53,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273145907] [2024-11-27 23:27:53,000 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:27:53,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:53,020 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:27:53,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:27:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273145907] [2024-11-27 23:27:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273145907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807983894] [2024-11-27 23:27:53,253 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:27:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:53,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:53,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:27:53,329 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:27:53,329 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:53,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-27 23:27:53,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:53,353 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 [2024-11-27 23:27:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:27:53,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-27 23:27:53,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807983894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:53,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:53,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-27 23:27:53,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328285332] [2024-11-27 23:27:53,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:53,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:27:53,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:53,817 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:27:53,817 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:54,271 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:27:54,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 338 flow. Second operand has 11 states, 11 states have (on average 26.727272727272727) internal successors, (294), 11 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:54,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:27:54,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:54,836 INFO L124 PetriNetUnfolderBase]: 1234/2242 cut-off events. [2024-11-27 23:27:54,837 INFO L125 PetriNetUnfolderBase]: For 1270/1270 co-relation queries the response was YES. [2024-11-27 23:27:54,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5748 conditions, 2242 events. 1234/2242 cut-off events. For 1270/1270 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 13346 event pairs, 637 based on Foata normal form. 0/2170 useless extension candidates. Maximal degree in co-relation 3672. Up to 1437 conditions per place. [2024-11-27 23:27:54,856 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 70 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-11-27 23:27:54,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 640 flow [2024-11-27 23:27:54,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:27:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-11-27 23:27:54,858 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5964285714285714 [2024-11-27 23:27:54,858 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 338 flow. Second operand 5 states and 167 transitions. [2024-11-27 23:27:54,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 640 flow [2024-11-27 23:27:54,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 605 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 23:27:54,867 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 328 flow [2024-11-27 23:27:54,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-11-27 23:27:54,868 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-11-27 23:27:54,868 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 328 flow [2024-11-27 23:27:54,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.727272727272727) internal successors, (294), 11 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:54,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:54,869 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:54,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:27:55,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:27:55,070 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:55,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:55,070 INFO L85 PathProgramCache]: Analyzing trace with hash -152014828, now seen corresponding path program 2 times [2024-11-27 23:27:55,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:55,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328939331] [2024-11-27 23:27:55,070 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:27:55,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:55,088 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:27:55,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:27:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:55,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:55,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328939331] [2024-11-27 23:27:55,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328939331] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:55,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:55,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:55,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898586669] [2024-11-27 23:27:55,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:55,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:55,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:55,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:55,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:55,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-27 23:27:55,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:55,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:55,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-27 23:27:55,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:56,046 INFO L124 PetriNetUnfolderBase]: 1603/2671 cut-off events. [2024-11-27 23:27:56,047 INFO L125 PetriNetUnfolderBase]: For 3124/3124 co-relation queries the response was YES. [2024-11-27 23:27:56,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 2671 events. 1603/2671 cut-off events. For 3124/3124 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14299 event pairs, 172 based on Foata normal form. 16/2441 useless extension candidates. Maximal degree in co-relation 4570. Up to 1775 conditions per place. [2024-11-27 23:27:56,066 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 84 selfloop transitions, 21 changer transitions 0/109 dead transitions. [2024-11-27 23:27:56,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 109 transitions, 732 flow [2024-11-27 23:27:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:27:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-11-27 23:27:56,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5654761904761905 [2024-11-27 23:27:56,068 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 328 flow. Second operand 6 states and 190 transitions. [2024-11-27 23:27:56,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 109 transitions, 732 flow [2024-11-27 23:27:56,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 109 transitions, 688 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:27:56,078 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 410 flow [2024-11-27 23:27:56,078 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=410, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-11-27 23:27:56,079 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 12 predicate places. [2024-11-27 23:27:56,079 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 410 flow [2024-11-27 23:27:56,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:56,079 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:56,079 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:56,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:27:56,079 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:56,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 890124520, now seen corresponding path program 1 times [2024-11-27 23:27:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:56,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912625885] [2024-11-27 23:27:56,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:56,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912625885] [2024-11-27 23:27:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912625885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507581721] [2024-11-27 23:27:56,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:56,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:56,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:56,314 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:56,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:27:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 23:27:56,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:56,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:56,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2024-11-27 23:27:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:56,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507581721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:56,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:56,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-11-27 23:27:56,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530766563] [2024-11-27 23:27:56,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:56,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 23:27:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:56,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 23:27:56,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:27:57,679 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-27 23:27:57,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 410 flow. Second operand has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:57,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:57,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-27 23:27:57,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:58,488 INFO L124 PetriNetUnfolderBase]: 1442/2416 cut-off events. [2024-11-27 23:27:58,488 INFO L125 PetriNetUnfolderBase]: For 2441/2441 co-relation queries the response was YES. [2024-11-27 23:27:58,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6635 conditions, 2416 events. 1442/2416 cut-off events. For 2441/2441 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12745 event pairs, 700 based on Foata normal form. 32/2289 useless extension candidates. Maximal degree in co-relation 4510. Up to 1220 conditions per place. [2024-11-27 23:27:58,507 INFO L140 encePairwiseOnDemand]: 35/56 looper letters, 99 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2024-11-27 23:27:58,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 126 transitions, 823 flow [2024-11-27 23:27:58,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:27:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-11-27 23:27:58,509 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-27 23:27:58,510 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 410 flow. Second operand 8 states and 252 transitions. [2024-11-27 23:27:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 126 transitions, 823 flow [2024-11-27 23:27:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 765 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-27 23:27:58,524 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 485 flow [2024-11-27 23:27:58,525 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-11-27 23:27:58,525 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-11-27 23:27:58,525 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 485 flow [2024-11-27 23:27:58,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 20.294117647058822) internal successors, (345), 17 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:58,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:58,526 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:58,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:27:58,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 23:27:58,731 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:58,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash -417491710, now seen corresponding path program 1 times [2024-11-27 23:27:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274197805] [2024-11-27 23:27:58,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:27:59,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:59,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274197805] [2024-11-27 23:27:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274197805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:59,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:59,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580996459] [2024-11-27 23:27:59,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:59,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:59,030 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:59,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:59,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-27 23:27:59,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 485 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:59,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:59,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-27 23:27:59,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:59,576 INFO L124 PetriNetUnfolderBase]: 1187/2043 cut-off events. [2024-11-27 23:27:59,576 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-11-27 23:27:59,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 2043 events. 1187/2043 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10819 event pairs, 314 based on Foata normal form. 48/2058 useless extension candidates. Maximal degree in co-relation 3904. Up to 1034 conditions per place. [2024-11-27 23:27:59,588 INFO L140 encePairwiseOnDemand]: 39/56 looper letters, 45 selfloop transitions, 32 changer transitions 0/81 dead transitions. [2024-11-27 23:27:59,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 81 transitions, 669 flow [2024-11-27 23:27:59,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:59,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:27:59,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-27 23:27:59,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-11-27 23:27:59,590 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 485 flow. Second operand 5 states and 132 transitions. [2024-11-27 23:27:59,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 81 transitions, 669 flow [2024-11-27 23:27:59,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 81 transitions, 651 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-27 23:27:59,600 INFO L231 Difference]: Finished difference. Result has 64 places, 69 transitions, 488 flow [2024-11-27 23:27:59,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=488, PETRI_PLACES=64, PETRI_TRANSITIONS=69} [2024-11-27 23:27:59,600 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-11-27 23:27:59,601 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 69 transitions, 488 flow [2024-11-27 23:27:59,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:59,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:27:59,601 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] [2024-11-27 23:27:59,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:27:59,601 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:27:59,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1963318964, now seen corresponding path program 1 times [2024-11-27 23:27:59,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:59,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099590059] [2024-11-27 23:27:59,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:59,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:59,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:27:59,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:59,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099590059] [2024-11-27 23:27:59,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099590059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:59,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:59,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:59,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109156363] [2024-11-27 23:27:59,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:59,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:59,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:59,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:59,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:59,677 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-11-27 23:27:59,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 69 transitions, 488 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:27:59,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:27:59,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-11-27 23:27:59,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:27:59,979 INFO L124 PetriNetUnfolderBase]: 1189/2029 cut-off events. [2024-11-27 23:27:59,980 INFO L125 PetriNetUnfolderBase]: For 2796/2796 co-relation queries the response was YES. [2024-11-27 23:27:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 2029 events. 1189/2029 cut-off events. For 2796/2796 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10655 event pairs, 302 based on Foata normal form. 2/2011 useless extension candidates. Maximal degree in co-relation 4229. Up to 1537 conditions per place. [2024-11-27 23:28:00,000 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 68 selfloop transitions, 11 changer transitions 1/84 dead transitions. [2024-11-27 23:28:00,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 699 flow [2024-11-27 23:28:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:28:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 23:28:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-11-27 23:28:00,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7440476190476191 [2024-11-27 23:28:00,002 INFO L175 Difference]: Start difference. First operand has 64 places, 69 transitions, 488 flow. Second operand 3 states and 125 transitions. [2024-11-27 23:28:00,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 699 flow [2024-11-27 23:28:00,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 627 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-27 23:28:00,017 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 459 flow [2024-11-27 23:28:00,017 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=459, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2024-11-27 23:28:00,017 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-11-27 23:28:00,017 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 459 flow [2024-11-27 23:28:00,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:00,018 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:00,018 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] [2024-11-27 23:28:00,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:28:00,018 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:00,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1834467882, now seen corresponding path program 1 times [2024-11-27 23:28:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:00,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928517515] [2024-11-27 23:28:00,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:00,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:00,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:00,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928517515] [2024-11-27 23:28:00,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928517515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:00,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:00,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:28:00,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290824256] [2024-11-27 23:28:00,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:00,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:28:00,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:00,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:28:00,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:28:00,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-27 23:28:00,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 459 flow. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:00,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:00,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-27 23:28:00,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:00,820 INFO L124 PetriNetUnfolderBase]: 1369/2251 cut-off events. [2024-11-27 23:28:00,821 INFO L125 PetriNetUnfolderBase]: For 3016/3016 co-relation queries the response was YES. [2024-11-27 23:28:00,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 2251 events. 1369/2251 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12131 event pairs, 464 based on Foata normal form. 6/2257 useless extension candidates. Maximal degree in co-relation 4550. Up to 1220 conditions per place. [2024-11-27 23:28:00,834 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 142 selfloop transitions, 9 changer transitions 0/153 dead transitions. [2024-11-27 23:28:00,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 153 transitions, 1290 flow [2024-11-27 23:28:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:28:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:28:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-11-27 23:28:00,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-11-27 23:28:00,836 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 459 flow. Second operand 5 states and 195 transitions. [2024-11-27 23:28:00,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 153 transitions, 1290 flow [2024-11-27 23:28:00,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 153 transitions, 1232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 23:28:00,846 INFO L231 Difference]: Finished difference. Result has 68 places, 73 transitions, 508 flow [2024-11-27 23:28:00,847 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=68, PETRI_TRANSITIONS=73} [2024-11-27 23:28:00,847 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-11-27 23:28:00,847 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 73 transitions, 508 flow [2024-11-27 23:28:00,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:00,848 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:00,848 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] [2024-11-27 23:28:00,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:28:00,848 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:00,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:00,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1660068146, now seen corresponding path program 2 times [2024-11-27 23:28:00,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:00,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329014106] [2024-11-27 23:28:00,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:00,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:00,873 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:28:00,877 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:01,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329014106] [2024-11-27 23:28:01,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329014106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:01,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:01,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:28:01,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415144844] [2024-11-27 23:28:01,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:01,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:28:01,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:01,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:28:01,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:28:01,068 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:01,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 508 flow. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:01,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:01,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:01,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:01,447 INFO L124 PetriNetUnfolderBase]: 1133/1865 cut-off events. [2024-11-27 23:28:01,447 INFO L125 PetriNetUnfolderBase]: For 3025/3025 co-relation queries the response was YES. [2024-11-27 23:28:01,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6336 conditions, 1865 events. 1133/1865 cut-off events. For 3025/3025 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8822 event pairs, 562 based on Foata normal form. 64/1929 useless extension candidates. Maximal degree in co-relation 3921. Up to 1348 conditions per place. [2024-11-27 23:28:01,459 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 86 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-11-27 23:28:01,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 880 flow [2024-11-27 23:28:01,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:28:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:28:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-11-27 23:28:01,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 23:28:01,461 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 508 flow. Second operand 5 states and 168 transitions. [2024-11-27 23:28:01,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 880 flow [2024-11-27 23:28:01,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 103 transitions, 831 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-27 23:28:01,472 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 494 flow [2024-11-27 23:28:01,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-27 23:28:01,473 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2024-11-27 23:28:01,473 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 494 flow [2024-11-27 23:28:01,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:01,474 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:01,474 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] [2024-11-27 23:28:01,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:28:01,475 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:01,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1750269190, now seen corresponding path program 1 times [2024-11-27 23:28:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:01,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469268059] [2024-11-27 23:28:01,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:01,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:01,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:01,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469268059] [2024-11-27 23:28:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469268059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:01,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:01,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:01,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063090645] [2024-11-27 23:28:01,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:01,687 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:01,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:01,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:01,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:01,702 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:01,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:01,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:01,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:01,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:02,284 INFO L124 PetriNetUnfolderBase]: 1315/2193 cut-off events. [2024-11-27 23:28:02,284 INFO L125 PetriNetUnfolderBase]: For 4633/4633 co-relation queries the response was YES. [2024-11-27 23:28:02,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7947 conditions, 2193 events. 1315/2193 cut-off events. For 4633/4633 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 11547 event pairs, 400 based on Foata normal form. 32/2225 useless extension candidates. Maximal degree in co-relation 5127. Up to 1084 conditions per place. [2024-11-27 23:28:02,305 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 123 selfloop transitions, 20 changer transitions 0/144 dead transitions. [2024-11-27 23:28:02,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 1277 flow [2024-11-27 23:28:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:02,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:28:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-11-27 23:28:02,307 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-11-27 23:28:02,307 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 494 flow. Second operand 6 states and 218 transitions. [2024-11-27 23:28:02,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 1277 flow [2024-11-27 23:28:02,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 144 transitions, 1255 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-27 23:28:02,328 INFO L231 Difference]: Finished difference. Result has 81 places, 80 transitions, 715 flow [2024-11-27 23:28:02,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=715, PETRI_PLACES=81, PETRI_TRANSITIONS=80} [2024-11-27 23:28:02,329 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 27 predicate places. [2024-11-27 23:28:02,329 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 80 transitions, 715 flow [2024-11-27 23:28:02,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:02,329 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:02,329 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] [2024-11-27 23:28:02,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:28:02,330 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:02,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:02,330 INFO L85 PathProgramCache]: Analyzing trace with hash -121385042, now seen corresponding path program 2 times [2024-11-27 23:28:02,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:02,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889257276] [2024-11-27 23:28:02,331 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:02,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:02,350 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:28:02,350 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:02,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:02,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889257276] [2024-11-27 23:28:02,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889257276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:02,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:02,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:02,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488564625] [2024-11-27 23:28:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:02,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:02,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:02,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:02,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:02,516 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:02,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 715 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:02,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:02,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:02,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:03,005 INFO L124 PetriNetUnfolderBase]: 1641/2755 cut-off events. [2024-11-27 23:28:03,005 INFO L125 PetriNetUnfolderBase]: For 8443/8443 co-relation queries the response was YES. [2024-11-27 23:28:03,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10648 conditions, 2755 events. 1641/2755 cut-off events. For 8443/8443 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14373 event pairs, 612 based on Foata normal form. 32/2787 useless extension candidates. Maximal degree in co-relation 7871. Up to 1440 conditions per place. [2024-11-27 23:28:03,023 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 119 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-11-27 23:28:03,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 146 transitions, 1450 flow [2024-11-27 23:28:03,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:28:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:28:03,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-11-27 23:28:03,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5943877551020408 [2024-11-27 23:28:03,025 INFO L175 Difference]: Start difference. First operand has 81 places, 80 transitions, 715 flow. Second operand 7 states and 233 transitions. [2024-11-27 23:28:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 146 transitions, 1450 flow [2024-11-27 23:28:03,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 146 transitions, 1418 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-27 23:28:03,059 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 886 flow [2024-11-27 23:28:03,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=886, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-11-27 23:28:03,060 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-11-27 23:28:03,060 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 886 flow [2024-11-27 23:28:03,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:03,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:03,061 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] [2024-11-27 23:28:03,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:28:03,061 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:03,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash -628664492, now seen corresponding path program 3 times [2024-11-27 23:28:03,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:03,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904872456] [2024-11-27 23:28:03,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:28:03,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:03,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:28:03,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:03,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:03,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904872456] [2024-11-27 23:28:03,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904872456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:03,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:03,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:28:03,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143871738] [2024-11-27 23:28:03,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:03,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:28:03,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:03,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:28:03,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:28:03,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:03,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 886 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:03,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:03,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:03,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:03,835 INFO L124 PetriNetUnfolderBase]: 1603/2663 cut-off events. [2024-11-27 23:28:03,835 INFO L125 PetriNetUnfolderBase]: For 11043/11043 co-relation queries the response was YES. [2024-11-27 23:28:03,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10936 conditions, 2663 events. 1603/2663 cut-off events. For 11043/11043 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 14045 event pairs, 604 based on Foata normal form. 6/2669 useless extension candidates. Maximal degree in co-relation 9805. Up to 1340 conditions per place. [2024-11-27 23:28:03,858 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 110 selfloop transitions, 28 changer transitions 0/139 dead transitions. [2024-11-27 23:28:03,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 139 transitions, 1508 flow [2024-11-27 23:28:03,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:28:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:28:03,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-11-27 23:28:03,860 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6535714285714286 [2024-11-27 23:28:03,860 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 886 flow. Second operand 5 states and 183 transitions. [2024-11-27 23:28:03,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 139 transitions, 1508 flow [2024-11-27 23:28:03,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 139 transitions, 1458 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-27 23:28:03,906 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 982 flow [2024-11-27 23:28:03,906 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=982, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-11-27 23:28:03,907 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 39 predicate places. [2024-11-27 23:28:03,907 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 982 flow [2024-11-27 23:28:03,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:03,907 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:03,907 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] [2024-11-27 23:28:03,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:28:03,908 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:03,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:03,909 INFO L85 PathProgramCache]: Analyzing trace with hash -814940204, now seen corresponding path program 4 times [2024-11-27 23:28:03,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:03,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900797360] [2024-11-27 23:28:03,909 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:03,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:03,935 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:03,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:04,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:04,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900797360] [2024-11-27 23:28:04,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900797360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:04,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:04,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53303087] [2024-11-27 23:28:04,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:04,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:04,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:04,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:04,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:04,138 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:04,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 982 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:04,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:04,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:04,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:04,573 INFO L124 PetriNetUnfolderBase]: 1597/2657 cut-off events. [2024-11-27 23:28:04,573 INFO L125 PetriNetUnfolderBase]: For 13264/13264 co-relation queries the response was YES. [2024-11-27 23:28:04,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11270 conditions, 2657 events. 1597/2657 cut-off events. For 13264/13264 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13593 event pairs, 892 based on Foata normal form. 6/2663 useless extension candidates. Maximal degree in co-relation 10244. Up to 2204 conditions per place. [2024-11-27 23:28:04,589 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 85 selfloop transitions, 35 changer transitions 0/121 dead transitions. [2024-11-27 23:28:04,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 121 transitions, 1505 flow [2024-11-27 23:28:04,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:28:04,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:28:04,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-27 23:28:04,591 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6035714285714285 [2024-11-27 23:28:04,591 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 982 flow. Second operand 5 states and 169 transitions. [2024-11-27 23:28:04,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 121 transitions, 1505 flow [2024-11-27 23:28:04,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 121 transitions, 1449 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-27 23:28:04,626 INFO L231 Difference]: Finished difference. Result has 98 places, 103 transitions, 1254 flow [2024-11-27 23:28:04,626 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1254, PETRI_PLACES=98, PETRI_TRANSITIONS=103} [2024-11-27 23:28:04,626 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-11-27 23:28:04,627 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 103 transitions, 1254 flow [2024-11-27 23:28:04,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:04,627 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:04,627 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] [2024-11-27 23:28:04,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:28:04,627 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:04,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1969071338, now seen corresponding path program 5 times [2024-11-27 23:28:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:04,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951297254] [2024-11-27 23:28:04,628 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:28:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:04,645 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:28:04,646 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:04,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:04,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:04,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951297254] [2024-11-27 23:28:04,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951297254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:04,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:04,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:28:04,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823371139] [2024-11-27 23:28:04,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:04,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:28:04,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:04,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:28:04,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:28:04,829 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:04,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 103 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:04,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:04,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:04,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:05,396 INFO L124 PetriNetUnfolderBase]: 1533/2539 cut-off events. [2024-11-27 23:28:05,396 INFO L125 PetriNetUnfolderBase]: For 14172/14172 co-relation queries the response was YES. [2024-11-27 23:28:05,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10847 conditions, 2539 events. 1533/2539 cut-off events. For 14172/14172 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 12689 event pairs, 798 based on Foata normal form. 32/2571 useless extension candidates. Maximal degree in co-relation 9866. Up to 2006 conditions per place. [2024-11-27 23:28:05,417 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 97 selfloop transitions, 37 changer transitions 0/135 dead transitions. [2024-11-27 23:28:05,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 135 transitions, 1689 flow [2024-11-27 23:28:05,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:28:05,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:28:05,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-11-27 23:28:05,418 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5982142857142857 [2024-11-27 23:28:05,418 INFO L175 Difference]: Start difference. First operand has 98 places, 103 transitions, 1254 flow. Second operand 6 states and 201 transitions. [2024-11-27 23:28:05,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 135 transitions, 1689 flow [2024-11-27 23:28:05,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 135 transitions, 1639 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-27 23:28:05,462 INFO L231 Difference]: Finished difference. Result has 105 places, 106 transitions, 1349 flow [2024-11-27 23:28:05,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1349, PETRI_PLACES=105, PETRI_TRANSITIONS=106} [2024-11-27 23:28:05,463 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 51 predicate places. [2024-11-27 23:28:05,463 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 106 transitions, 1349 flow [2024-11-27 23:28:05,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:05,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:05,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:05,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:28:05,464 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:05,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:05,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1975908562, now seen corresponding path program 1 times [2024-11-27 23:28:05,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:05,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308266370] [2024-11-27 23:28:05,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:05,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:05,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:05,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:05,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308266370] [2024-11-27 23:28:05,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308266370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:05,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:05,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:28:05,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919000189] [2024-11-27 23:28:05,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:05,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:28:05,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:05,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:28:05,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:28:06,036 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:06,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 106 transitions, 1349 flow. Second operand has 9 states, 9 states have (on average 24.555555555555557) internal successors, (221), 9 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:06,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:06,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:06,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:07,174 INFO L124 PetriNetUnfolderBase]: 2547/4279 cut-off events. [2024-11-27 23:28:07,174 INFO L125 PetriNetUnfolderBase]: For 19614/19614 co-relation queries the response was YES. [2024-11-27 23:28:07,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17670 conditions, 4279 events. 2547/4279 cut-off events. For 19614/19614 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 25009 event pairs, 618 based on Foata normal form. 44/4323 useless extension candidates. Maximal degree in co-relation 16264. Up to 1316 conditions per place. [2024-11-27 23:28:07,197 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 240 selfloop transitions, 64 changer transitions 0/305 dead transitions. [2024-11-27 23:28:07,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 305 transitions, 3481 flow [2024-11-27 23:28:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:28:07,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:28:07,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 398 transitions. [2024-11-27 23:28:07,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6461038961038961 [2024-11-27 23:28:07,200 INFO L175 Difference]: Start difference. First operand has 105 places, 106 transitions, 1349 flow. Second operand 11 states and 398 transitions. [2024-11-27 23:28:07,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 305 transitions, 3481 flow [2024-11-27 23:28:07,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 305 transitions, 3353 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-11-27 23:28:07,276 INFO L231 Difference]: Finished difference. Result has 121 places, 146 transitions, 2057 flow [2024-11-27 23:28:07,277 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2057, PETRI_PLACES=121, PETRI_TRANSITIONS=146} [2024-11-27 23:28:07,277 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 67 predicate places. [2024-11-27 23:28:07,277 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 146 transitions, 2057 flow [2024-11-27 23:28:07,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.555555555555557) internal successors, (221), 9 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:07,278 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:07,278 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:28:07,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:28:07,278 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:07,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:07,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1635086898, now seen corresponding path program 2 times [2024-11-27 23:28:07,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:07,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981814171] [2024-11-27 23:28:07,279 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:07,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:07,302 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:28:07,302 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:07,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 23:28:07,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:07,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981814171] [2024-11-27 23:28:07,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981814171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:07,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:07,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:28:07,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228251731] [2024-11-27 23:28:07,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:07,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:28:07,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:07,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:28:07,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:28:07,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:07,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 146 transitions, 2057 flow. Second operand has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:07,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:07,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:07,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:08,641 INFO L124 PetriNetUnfolderBase]: 2519/4271 cut-off events. [2024-11-27 23:28:08,641 INFO L125 PetriNetUnfolderBase]: For 28694/28694 co-relation queries the response was YES. [2024-11-27 23:28:08,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20208 conditions, 4271 events. 2519/4271 cut-off events. For 28694/28694 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 24601 event pairs, 1042 based on Foata normal form. 82/4353 useless extension candidates. Maximal degree in co-relation 18834. Up to 2490 conditions per place. [2024-11-27 23:28:08,694 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 188 selfloop transitions, 63 changer transitions 0/252 dead transitions. [2024-11-27 23:28:08,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 252 transitions, 3717 flow [2024-11-27 23:28:08,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:28:08,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:28:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-11-27 23:28:08,696 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5790816326530612 [2024-11-27 23:28:08,696 INFO L175 Difference]: Start difference. First operand has 121 places, 146 transitions, 2057 flow. Second operand 7 states and 227 transitions. [2024-11-27 23:28:08,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 252 transitions, 3717 flow [2024-11-27 23:28:08,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 252 transitions, 3635 flow, removed 41 selfloop flow, removed 0 redundant places. [2024-11-27 23:28:08,818 INFO L231 Difference]: Finished difference. Result has 131 places, 165 transitions, 2501 flow [2024-11-27 23:28:08,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2501, PETRI_PLACES=131, PETRI_TRANSITIONS=165} [2024-11-27 23:28:08,819 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 77 predicate places. [2024-11-27 23:28:08,819 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 165 transitions, 2501 flow [2024-11-27 23:28:08,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.285714285714285) internal successors, (177), 7 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:08,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:08,820 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] [2024-11-27 23:28:08,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:28:08,820 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:08,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 967191290, now seen corresponding path program 1 times [2024-11-27 23:28:08,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393006718] [2024-11-27 23:28:08,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:08,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:09,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:09,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393006718] [2024-11-27 23:28:09,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393006718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:09,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:09,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:28:09,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066552470] [2024-11-27 23:28:09,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:09,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:28:09,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:09,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:28:09,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:09,214 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:09,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 165 transitions, 2501 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:09,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:09,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:09,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:10,294 INFO L124 PetriNetUnfolderBase]: 2555/4345 cut-off events. [2024-11-27 23:28:10,294 INFO L125 PetriNetUnfolderBase]: For 34268/34268 co-relation queries the response was YES. [2024-11-27 23:28:10,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21800 conditions, 4345 events. 2555/4345 cut-off events. For 34268/34268 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 25377 event pairs, 1308 based on Foata normal form. 6/4351 useless extension candidates. Maximal degree in co-relation 20318. Up to 3252 conditions per place. [2024-11-27 23:28:10,321 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 179 selfloop transitions, 55 changer transitions 0/235 dead transitions. [2024-11-27 23:28:10,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 235 transitions, 3605 flow [2024-11-27 23:28:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:28:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:28:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 295 transitions. [2024-11-27 23:28:10,323 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-11-27 23:28:10,323 INFO L175 Difference]: Start difference. First operand has 131 places, 165 transitions, 2501 flow. Second operand 10 states and 295 transitions. [2024-11-27 23:28:10,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 235 transitions, 3605 flow [2024-11-27 23:28:10,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 235 transitions, 3520 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-27 23:28:10,435 INFO L231 Difference]: Finished difference. Result has 143 places, 176 transitions, 2712 flow [2024-11-27 23:28:10,435 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2416, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2712, PETRI_PLACES=143, PETRI_TRANSITIONS=176} [2024-11-27 23:28:10,436 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 89 predicate places. [2024-11-27 23:28:10,436 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 176 transitions, 2712 flow [2024-11-27 23:28:10,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:10,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:10,436 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] [2024-11-27 23:28:10,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:28:10,437 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:10,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1986087836, now seen corresponding path program 2 times [2024-11-27 23:28:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709078843] [2024-11-27 23:28:10,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:10,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:10,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:28:10,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709078843] [2024-11-27 23:28:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709078843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:10,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:10,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:28:10,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855883393] [2024-11-27 23:28:10,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:10,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:28:10,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:10,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:28:10,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:28:10,827 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:10,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 176 transitions, 2712 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:10,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:10,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:10,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:11,922 INFO L124 PetriNetUnfolderBase]: 2620/4465 cut-off events. [2024-11-27 23:28:11,923 INFO L125 PetriNetUnfolderBase]: For 37475/37475 co-relation queries the response was YES. [2024-11-27 23:28:11,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23158 conditions, 4465 events. 2620/4465 cut-off events. For 37475/37475 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 26387 event pairs, 1285 based on Foata normal form. 6/4471 useless extension candidates. Maximal degree in co-relation 21879. Up to 3232 conditions per place. [2024-11-27 23:28:11,956 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 197 selfloop transitions, 58 changer transitions 0/256 dead transitions. [2024-11-27 23:28:11,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 256 transitions, 4008 flow [2024-11-27 23:28:11,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:28:11,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:28:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-11-27 23:28:11,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5339285714285714 [2024-11-27 23:28:11,959 INFO L175 Difference]: Start difference. First operand has 143 places, 176 transitions, 2712 flow. Second operand 10 states and 299 transitions. [2024-11-27 23:28:11,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 256 transitions, 4008 flow [2024-11-27 23:28:12,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 256 transitions, 3929 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-27 23:28:12,057 INFO L231 Difference]: Finished difference. Result has 154 places, 186 transitions, 2903 flow [2024-11-27 23:28:12,057 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2903, PETRI_PLACES=154, PETRI_TRANSITIONS=186} [2024-11-27 23:28:12,057 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-11-27 23:28:12,057 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 186 transitions, 2903 flow [2024-11-27 23:28:12,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:12,058 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:12,058 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] [2024-11-27 23:28:12,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:28:12,058 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:12,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash -12611193, now seen corresponding path program 1 times [2024-11-27 23:28:12,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:12,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816219985] [2024-11-27 23:28:12,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:12,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:12,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:12,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816219985] [2024-11-27 23:28:12,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816219985] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:12,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:12,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:28:12,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182546923] [2024-11-27 23:28:12,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:12,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:28:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:12,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:28:12,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:28:12,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 56 [2024-11-27 23:28:12,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 186 transitions, 2903 flow. Second operand has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:12,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:12,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 56 [2024-11-27 23:28:12,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:13,638 INFO L124 PetriNetUnfolderBase]: 2702/4691 cut-off events. [2024-11-27 23:28:13,638 INFO L125 PetriNetUnfolderBase]: For 42013/42039 co-relation queries the response was YES. [2024-11-27 23:28:13,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24640 conditions, 4691 events. 2702/4691 cut-off events. For 42013/42039 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 29261 event pairs, 636 based on Foata normal form. 26/4717 useless extension candidates. Maximal degree in co-relation 23155. Up to 1368 conditions per place. [2024-11-27 23:28:13,675 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 313 selfloop transitions, 83 changer transitions 0/398 dead transitions. [2024-11-27 23:28:13,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 398 transitions, 5414 flow [2024-11-27 23:28:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:28:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:28:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 436 transitions. [2024-11-27 23:28:13,677 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6488095238095238 [2024-11-27 23:28:13,677 INFO L175 Difference]: Start difference. First operand has 154 places, 186 transitions, 2903 flow. Second operand 12 states and 436 transitions. [2024-11-27 23:28:13,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 398 transitions, 5414 flow [2024-11-27 23:28:13,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 398 transitions, 5249 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-27 23:28:13,809 INFO L231 Difference]: Finished difference. Result has 170 places, 211 transitions, 3403 flow [2024-11-27 23:28:13,810 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3403, PETRI_PLACES=170, PETRI_TRANSITIONS=211} [2024-11-27 23:28:13,810 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-11-27 23:28:13,810 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 211 transitions, 3403 flow [2024-11-27 23:28:13,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.0) internal successors, (208), 8 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:13,811 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:13,811 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] [2024-11-27 23:28:13,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:28:13,811 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:13,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash 232684793, now seen corresponding path program 2 times [2024-11-27 23:28:13,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459649589] [2024-11-27 23:28:13,812 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:13,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:13,836 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:28:13,836 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:14,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459649589] [2024-11-27 23:28:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459649589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776916868] [2024-11-27 23:28:14,101 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:28:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:14,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:14,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:28:14,202 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:28:14,202 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:14,204 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 23:28:14,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:14,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-27 23:28:14,473 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 15 treesize of output 7 [2024-11-27 23:28:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:14,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:14,925 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 33 treesize of output 29 [2024-11-27 23:28:14,949 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 23:28:14,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 62 treesize of output 41 [2024-11-27 23:28:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:15,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776916868] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:15,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:15,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2024-11-27 23:28:15,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160627724] [2024-11-27 23:28:15,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:15,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:28:15,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:15,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:28:15,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:28:16,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:16,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 211 transitions, 3403 flow. Second operand has 18 states, 18 states have (on average 25.833333333333332) internal successors, (465), 18 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:16,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:16,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:16,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:19,420 INFO L124 PetriNetUnfolderBase]: 3320/5685 cut-off events. [2024-11-27 23:28:19,421 INFO L125 PetriNetUnfolderBase]: For 57614/57614 co-relation queries the response was YES. [2024-11-27 23:28:19,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30992 conditions, 5685 events. 3320/5685 cut-off events. For 57614/57614 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33963 event pairs, 416 based on Foata normal form. 23/5708 useless extension candidates. Maximal degree in co-relation 29450. Up to 988 conditions per place. [2024-11-27 23:28:19,464 INFO L140 encePairwiseOnDemand]: 36/56 looper letters, 256 selfloop transitions, 127 changer transitions 238/622 dead transitions. [2024-11-27 23:28:19,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 622 transitions, 8340 flow [2024-11-27 23:28:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 23:28:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-27 23:28:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1123 transitions. [2024-11-27 23:28:19,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6076839826839827 [2024-11-27 23:28:19,467 INFO L175 Difference]: Start difference. First operand has 170 places, 211 transitions, 3403 flow. Second operand 33 states and 1123 transitions. [2024-11-27 23:28:19,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 622 transitions, 8340 flow [2024-11-27 23:28:19,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 622 transitions, 8148 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-27 23:28:19,672 INFO L231 Difference]: Finished difference. Result has 211 places, 211 transitions, 3316 flow [2024-11-27 23:28:19,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3316, PETRI_PLACES=211, PETRI_TRANSITIONS=211} [2024-11-27 23:28:19,672 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-11-27 23:28:19,672 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 211 transitions, 3316 flow [2024-11-27 23:28:19,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.833333333333332) internal successors, (465), 18 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:19,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:19,673 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] [2024-11-27 23:28:19,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:28:19,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-27 23:28:19,873 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:19,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:19,874 INFO L85 PathProgramCache]: Analyzing trace with hash 2124642085, now seen corresponding path program 3 times [2024-11-27 23:28:19,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:19,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365754809] [2024-11-27 23:28:19,874 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:28:19,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:19,894 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:28:19,894 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 23:28:20,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:20,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365754809] [2024-11-27 23:28:20,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365754809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:20,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:20,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:28:20,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987180418] [2024-11-27 23:28:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:20,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:28:20,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:20,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:28:20,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:28:20,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:20,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 211 transitions, 3316 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:20,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:20,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:20,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:21,200 INFO L124 PetriNetUnfolderBase]: 2131/3734 cut-off events. [2024-11-27 23:28:21,200 INFO L125 PetriNetUnfolderBase]: For 38573/38573 co-relation queries the response was YES. [2024-11-27 23:28:21,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21208 conditions, 3734 events. 2131/3734 cut-off events. For 38573/38573 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 20862 event pairs, 1000 based on Foata normal form. 32/3766 useless extension candidates. Maximal degree in co-relation 21038. Up to 2416 conditions per place. [2024-11-27 23:28:21,250 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 219 selfloop transitions, 58 changer transitions 0/278 dead transitions. [2024-11-27 23:28:21,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 278 transitions, 4449 flow [2024-11-27 23:28:21,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:28:21,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:28:21,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-11-27 23:28:21,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6224489795918368 [2024-11-27 23:28:21,251 INFO L175 Difference]: Start difference. First operand has 211 places, 211 transitions, 3316 flow. Second operand 7 states and 244 transitions. [2024-11-27 23:28:21,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 278 transitions, 4449 flow [2024-11-27 23:28:21,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 278 transitions, 4055 flow, removed 145 selfloop flow, removed 18 redundant places. [2024-11-27 23:28:21,401 INFO L231 Difference]: Finished difference. Result has 190 places, 215 transitions, 3138 flow [2024-11-27 23:28:21,401 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3138, PETRI_PLACES=190, PETRI_TRANSITIONS=215} [2024-11-27 23:28:21,401 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 136 predicate places. [2024-11-27 23:28:21,401 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 215 transitions, 3138 flow [2024-11-27 23:28:21,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:21,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:21,402 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] [2024-11-27 23:28:21,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 23:28:21,402 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:21,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -828396365, now seen corresponding path program 4 times [2024-11-27 23:28:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179416376] [2024-11-27 23:28:21,403 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:21,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:21,423 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:21,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:21,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:21,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:21,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179416376] [2024-11-27 23:28:21,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179416376] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:21,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691320055] [2024-11-27 23:28:21,668 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:21,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:21,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:21,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:21,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:28:21,761 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:21,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:21,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:28:21,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:21,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2024-11-27 23:28:22,014 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 15 treesize of output 7 [2024-11-27 23:28:22,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:22,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:22,374 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 33 treesize of output 29 [2024-11-27 23:28:22,388 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-27 23:28:22,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 62 treesize of output 41 [2024-11-27 23:28:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:28:22,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691320055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:22,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:22,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-11-27 23:28:22,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26889413] [2024-11-27 23:28:22,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:22,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:28:22,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:22,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:28:22,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-27 23:28:23,100 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 56 [2024-11-27 23:28:23,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 215 transitions, 3138 flow. Second operand has 18 states, 18 states have (on average 28.38888888888889) internal successors, (511), 18 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:23,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:23,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 56 [2024-11-27 23:28:23,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:24,189 INFO L124 PetriNetUnfolderBase]: 2317/4142 cut-off events. [2024-11-27 23:28:24,189 INFO L125 PetriNetUnfolderBase]: For 37258/37283 co-relation queries the response was YES. [2024-11-27 23:28:24,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21733 conditions, 4142 events. 2317/4142 cut-off events. For 37258/37283 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24355 event pairs, 573 based on Foata normal form. 4/4115 useless extension candidates. Maximal degree in co-relation 21321. Up to 2655 conditions per place. [2024-11-27 23:28:24,233 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 184 selfloop transitions, 65 changer transitions 76/331 dead transitions. [2024-11-27 23:28:24,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 331 transitions, 4979 flow [2024-11-27 23:28:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:28:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:28:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 448 transitions. [2024-11-27 23:28:24,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2024-11-27 23:28:24,235 INFO L175 Difference]: Start difference. First operand has 190 places, 215 transitions, 3138 flow. Second operand 13 states and 448 transitions. [2024-11-27 23:28:24,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 331 transitions, 4979 flow [2024-11-27 23:28:24,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 331 transitions, 4841 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-11-27 23:28:24,376 INFO L231 Difference]: Finished difference. Result has 201 places, 214 transitions, 3132 flow [2024-11-27 23:28:24,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3132, PETRI_PLACES=201, PETRI_TRANSITIONS=214} [2024-11-27 23:28:24,377 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-11-27 23:28:24,377 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 214 transitions, 3132 flow [2024-11-27 23:28:24,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 28.38888888888889) internal successors, (511), 18 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:24,377 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:24,377 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] [2024-11-27 23:28:24,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 23:28:24,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 23:28:24,578 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:24,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash 440385478, now seen corresponding path program 3 times [2024-11-27 23:28:24,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:24,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829310462] [2024-11-27 23:28:24,579 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:28:24,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:24,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:28:24,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:28:24,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:24,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829310462] [2024-11-27 23:28:24,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829310462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:24,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:24,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:28:24,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834281636] [2024-11-27 23:28:24,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:24,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:28:24,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:24,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:28:24,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:28:24,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-11-27 23:28:24,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 214 transitions, 3132 flow. Second operand has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:24,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:24,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-11-27 23:28:24,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:26,252 INFO L124 PetriNetUnfolderBase]: 2131/3691 cut-off events. [2024-11-27 23:28:26,253 INFO L125 PetriNetUnfolderBase]: For 33992/34016 co-relation queries the response was YES. [2024-11-27 23:28:26,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19987 conditions, 3691 events. 2131/3691 cut-off events. For 33992/34016 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 20639 event pairs, 1106 based on Foata normal form. 9/3668 useless extension candidates. Maximal degree in co-relation 19910. Up to 2827 conditions per place. [2024-11-27 23:28:26,315 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 225 selfloop transitions, 43 changer transitions 0/273 dead transitions. [2024-11-27 23:28:26,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 273 transitions, 4122 flow [2024-11-27 23:28:26,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:28:26,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 23:28:26,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 306 transitions. [2024-11-27 23:28:26,316 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-27 23:28:26,316 INFO L175 Difference]: Start difference. First operand has 201 places, 214 transitions, 3132 flow. Second operand 9 states and 306 transitions. [2024-11-27 23:28:26,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 273 transitions, 4122 flow [2024-11-27 23:28:26,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 273 transitions, 3888 flow, removed 90 selfloop flow, removed 10 redundant places. [2024-11-27 23:28:26,505 INFO L231 Difference]: Finished difference. Result has 186 places, 216 transitions, 3065 flow [2024-11-27 23:28:26,506 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3065, PETRI_PLACES=186, PETRI_TRANSITIONS=216} [2024-11-27 23:28:26,506 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-11-27 23:28:26,506 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 216 transitions, 3065 flow [2024-11-27 23:28:26,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 26.444444444444443) internal successors, (238), 9 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:26,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:28:26,507 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] [2024-11-27 23:28:26,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 23:28:26,507 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:28:26,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:26,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1992076984, now seen corresponding path program 4 times [2024-11-27 23:28:26,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:26,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975595318] [2024-11-27 23:28:26,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:26,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:26,531 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:26,532 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:28:26,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975595318] [2024-11-27 23:28:26,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975595318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:26,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884310256] [2024-11-27 23:28:26,978 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:28:26,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:26,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:26,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:26,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:28:27,173 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:28:27,173 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:28:27,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:28:27,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:27,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:28:27,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:28:28,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884310256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:28,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:28,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2024-11-27 23:28:28,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342679000] [2024-11-27 23:28:28,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:28,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:28:28,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:28,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:28:28,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:28:28,881 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:28:28,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 216 transitions, 3065 flow. Second operand has 27 states, 27 states have (on average 23.77777777777778) internal successors, (642), 27 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:28:28,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:28:28,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:28:28,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:28:34,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:28:55,181 WARN L286 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 55 DAG size of output: 49 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:29:07,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:13,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:17,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:21,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:25,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:27,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:28,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:32,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:38,735 WARN L286 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 38 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:29:42,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:47,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:29:57,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:02,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:11,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:17,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:42,952 WARN L286 SmtUtils]: Spent 17.35s on a formula simplification. DAG size of input: 37 DAG size of output: 24 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:30:47,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:51,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:54,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:30:58,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:31:02,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:31:17,989 WARN L286 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 55 DAG size of output: 34 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:31:27,931 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 34 DAG size of output: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:31:35,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:47,356 WARN L286 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 43 DAG size of output: 40 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:32:50,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:32:53,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:19,156 WARN L286 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 48 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:33:38,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:42,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:33:56,659 WARN L286 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 50 DAG size of output: 36 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:34:25,437 WARN L286 SmtUtils]: Spent 15.24s on a formula simplification. DAG size of input: 53 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:34:27,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:31,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:37,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:42,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:46,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:47,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:34:48,057 INFO L124 PetriNetUnfolderBase]: 3540/6089 cut-off events. [2024-11-27 23:34:48,058 INFO L125 PetriNetUnfolderBase]: For 56954/56954 co-relation queries the response was YES. [2024-11-27 23:34:48,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31020 conditions, 6089 events. 3540/6089 cut-off events. For 56954/56954 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 37908 event pairs, 509 based on Foata normal form. 88/6177 useless extension candidates. Maximal degree in co-relation 30945. Up to 1465 conditions per place. [2024-11-27 23:34:48,107 INFO L140 encePairwiseOnDemand]: 37/56 looper letters, 524 selfloop transitions, 351 changer transitions 0/876 dead transitions. [2024-11-27 23:34:48,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 876 transitions, 10758 flow [2024-11-27 23:34:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-27 23:34:48,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-27 23:34:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1954 transitions. [2024-11-27 23:34:48,112 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5538548752834467 [2024-11-27 23:34:48,112 INFO L175 Difference]: Start difference. First operand has 186 places, 216 transitions, 3065 flow. Second operand 63 states and 1954 transitions. [2024-11-27 23:34:48,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 876 transitions, 10758 flow [2024-11-27 23:34:48,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 876 transitions, 10606 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-27 23:34:48,330 INFO L231 Difference]: Finished difference. Result has 285 places, 512 transitions, 8184 flow [2024-11-27 23:34:48,330 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=8184, PETRI_PLACES=285, PETRI_TRANSITIONS=512} [2024-11-27 23:34:48,331 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 231 predicate places. [2024-11-27 23:34:48,331 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 512 transitions, 8184 flow [2024-11-27 23:34:48,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 23.77777777777778) internal successors, (642), 27 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:48,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:34:48,331 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] [2024-11-27 23:34:48,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:34:48,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:34:48,535 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:34:48,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:48,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1122817974, now seen corresponding path program 5 times [2024-11-27 23:34:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:48,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981052022] [2024-11-27 23:34:48,536 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:34:48,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:48,553 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:34:48,554 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:34:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:34:48,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:48,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981052022] [2024-11-27 23:34:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981052022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:48,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:48,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:34:48,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256629785] [2024-11-27 23:34:48,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:48,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:34:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:48,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:34:48,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:34:48,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:34:48,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 512 transitions, 8184 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:48,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:34:48,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:34:48,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:34:51,141 INFO L124 PetriNetUnfolderBase]: 3550/6114 cut-off events. [2024-11-27 23:34:51,141 INFO L125 PetriNetUnfolderBase]: For 92679/92679 co-relation queries the response was YES. [2024-11-27 23:34:51,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39943 conditions, 6114 events. 3550/6114 cut-off events. For 92679/92679 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 37849 event pairs, 1525 based on Foata normal form. 3/6117 useless extension candidates. Maximal degree in co-relation 39828. Up to 4374 conditions per place. [2024-11-27 23:34:51,254 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 483 selfloop transitions, 69 changer transitions 0/553 dead transitions. [2024-11-27 23:34:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 553 transitions, 9650 flow [2024-11-27 23:34:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 23:34:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-27 23:34:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-11-27 23:34:51,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5553571428571429 [2024-11-27 23:34:51,256 INFO L175 Difference]: Start difference. First operand has 285 places, 512 transitions, 8184 flow. Second operand 10 states and 311 transitions. [2024-11-27 23:34:51,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 553 transitions, 9650 flow [2024-11-27 23:34:52,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 553 transitions, 8395 flow, removed 601 selfloop flow, removed 3 redundant places. [2024-11-27 23:34:52,216 INFO L231 Difference]: Finished difference. Result has 295 places, 516 transitions, 7152 flow [2024-11-27 23:34:52,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=6961, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7152, PETRI_PLACES=295, PETRI_TRANSITIONS=516} [2024-11-27 23:34:52,217 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 241 predicate places. [2024-11-27 23:34:52,217 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 516 transitions, 7152 flow [2024-11-27 23:34:52,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:52,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:34:52,218 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] [2024-11-27 23:34:52,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 23:34:52,218 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:34:52,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:52,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2028771912, now seen corresponding path program 6 times [2024-11-27 23:34:52,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:52,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851718858] [2024-11-27 23:34:52,219 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:34:52,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:52,241 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:34:52,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:34:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:34:52,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:52,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851718858] [2024-11-27 23:34:52,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851718858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:52,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:52,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:34:52,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853987424] [2024-11-27 23:34:52,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:52,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:34:52,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:52,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:34:52,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:34:52,714 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:34:52,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 516 transitions, 7152 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:52,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:34:52,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:34:52,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:34:55,149 INFO L124 PetriNetUnfolderBase]: 3558/6134 cut-off events. [2024-11-27 23:34:55,149 INFO L125 PetriNetUnfolderBase]: For 82763/82763 co-relation queries the response was YES. [2024-11-27 23:34:55,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37184 conditions, 6134 events. 3558/6134 cut-off events. For 82763/82763 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 38072 event pairs, 1519 based on Foata normal form. 3/6137 useless extension candidates. Maximal degree in co-relation 37066. Up to 4374 conditions per place. [2024-11-27 23:34:55,219 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 482 selfloop transitions, 77 changer transitions 0/560 dead transitions. [2024-11-27 23:34:55,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 560 transitions, 8658 flow [2024-11-27 23:34:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:34:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:34:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 339 transitions. [2024-11-27 23:34:55,220 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5503246753246753 [2024-11-27 23:34:55,221 INFO L175 Difference]: Start difference. First operand has 295 places, 516 transitions, 7152 flow. Second operand 11 states and 339 transitions. [2024-11-27 23:34:55,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 560 transitions, 8658 flow [2024-11-27 23:34:55,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 560 transitions, 8496 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-27 23:34:55,749 INFO L231 Difference]: Finished difference. Result has 302 places, 521 transitions, 7263 flow [2024-11-27 23:34:55,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=6990, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7263, PETRI_PLACES=302, PETRI_TRANSITIONS=521} [2024-11-27 23:34:55,750 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-11-27 23:34:55,750 INFO L471 AbstractCegarLoop]: Abstraction has has 302 places, 521 transitions, 7263 flow [2024-11-27 23:34:55,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:55,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:34:55,750 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] [2024-11-27 23:34:55,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 23:34:55,750 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:34:55,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:55,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1569465482, now seen corresponding path program 7 times [2024-11-27 23:34:55,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:55,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380716511] [2024-11-27 23:34:55,751 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:34:55,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:34:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:34:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380716511] [2024-11-27 23:34:56,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380716511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:56,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:56,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:34:56,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331314068] [2024-11-27 23:34:56,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:56,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:34:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:56,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:34:56,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:34:56,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:34:56,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 521 transitions, 7263 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:56,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:34:56,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:34:56,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:34:58,529 INFO L124 PetriNetUnfolderBase]: 3564/6149 cut-off events. [2024-11-27 23:34:58,529 INFO L125 PetriNetUnfolderBase]: For 84595/84595 co-relation queries the response was YES. [2024-11-27 23:34:58,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37377 conditions, 6149 events. 3564/6149 cut-off events. For 84595/84595 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 38237 event pairs, 1516 based on Foata normal form. 3/6152 useless extension candidates. Maximal degree in co-relation 37257. Up to 4374 conditions per place. [2024-11-27 23:34:58,617 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 481 selfloop transitions, 84 changer transitions 0/566 dead transitions. [2024-11-27 23:34:58,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 566 transitions, 8778 flow [2024-11-27 23:34:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:34:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:34:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2024-11-27 23:34:58,619 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5461309523809523 [2024-11-27 23:34:58,619 INFO L175 Difference]: Start difference. First operand has 302 places, 521 transitions, 7263 flow. Second operand 12 states and 367 transitions. [2024-11-27 23:34:58,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 566 transitions, 8778 flow [2024-11-27 23:34:59,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 566 transitions, 8600 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-11-27 23:34:59,400 INFO L231 Difference]: Finished difference. Result has 312 places, 525 transitions, 7361 flow [2024-11-27 23:34:59,400 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7361, PETRI_PLACES=312, PETRI_TRANSITIONS=525} [2024-11-27 23:34:59,401 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 258 predicate places. [2024-11-27 23:34:59,401 INFO L471 AbstractCegarLoop]: Abstraction has has 312 places, 525 transitions, 7361 flow [2024-11-27 23:34:59,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:59,401 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:34:59,401 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] [2024-11-27 23:34:59,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 23:34:59,401 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:34:59,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:34:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash 919232136, now seen corresponding path program 8 times [2024-11-27 23:34:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:34:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293947952] [2024-11-27 23:34:59,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:34:59,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:34:59,417 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:34:59,417 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:34:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:34:59,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:34:59,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293947952] [2024-11-27 23:34:59,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293947952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:34:59,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:34:59,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:34:59,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705014578] [2024-11-27 23:34:59,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:34:59,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:34:59,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:34:59,757 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:34:59,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:34:59,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:34:59,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 525 transitions, 7361 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:34:59,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:34:59,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:34:59,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:35:02,472 INFO L124 PetriNetUnfolderBase]: 3568/6159 cut-off events. [2024-11-27 23:35:02,472 INFO L125 PetriNetUnfolderBase]: For 86048/86048 co-relation queries the response was YES. [2024-11-27 23:35:02,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37534 conditions, 6159 events. 3568/6159 cut-off events. For 86048/86048 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 38339 event pairs, 1512 based on Foata normal form. 3/6162 useless extension candidates. Maximal degree in co-relation 37411. Up to 4374 conditions per place. [2024-11-27 23:35:02,540 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 483 selfloop transitions, 87 changer transitions 0/571 dead transitions. [2024-11-27 23:35:02,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 571 transitions, 8880 flow [2024-11-27 23:35:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:35:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:35:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-11-27 23:35:02,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5425824175824175 [2024-11-27 23:35:02,541 INFO L175 Difference]: Start difference. First operand has 312 places, 525 transitions, 7361 flow. Second operand 13 states and 395 transitions. [2024-11-27 23:35:02,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 571 transitions, 8880 flow [2024-11-27 23:35:03,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 571 transitions, 8684 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-11-27 23:35:03,114 INFO L231 Difference]: Finished difference. Result has 319 places, 528 transitions, 7430 flow [2024-11-27 23:35:03,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7430, PETRI_PLACES=319, PETRI_TRANSITIONS=528} [2024-11-27 23:35:03,114 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 265 predicate places. [2024-11-27 23:35:03,114 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 528 transitions, 7430 flow [2024-11-27 23:35:03,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:03,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:35:03,115 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] [2024-11-27 23:35:03,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 23:35:03,115 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:35:03,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:35:03,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1420817546, now seen corresponding path program 9 times [2024-11-27 23:35:03,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:35:03,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249897057] [2024-11-27 23:35:03,116 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:35:03,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:35:03,132 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:35:03,132 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:04,250 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:04,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:35:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249897057] [2024-11-27 23:35:04,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249897057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:35:04,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141321464] [2024-11-27 23:35:04,251 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:35:04,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:35:04,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:35:04,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:35:04,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:35:04,390 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 23:35:04,390 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:35:04,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-27 23:35:04,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:35:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:04,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:35:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:35:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141321464] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:35:05,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:35:05,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2024-11-27 23:35:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324868970] [2024-11-27 23:35:05,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:35:05,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 23:35:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:35:05,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 23:35:05,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-11-27 23:35:05,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:35:05,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 528 transitions, 7430 flow. Second operand has 25 states, 25 states have (on average 23.72) internal successors, (593), 25 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:35:05,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:35:05,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:35:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:35:29,511 WARN L286 SmtUtils]: Spent 24.12s on a formula simplification. DAG size of input: 36 DAG size of output: 35 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:35:46,800 WARN L286 SmtUtils]: Spent 16.48s on a formula simplification. DAG size of input: 35 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:36:08,047 WARN L286 SmtUtils]: Spent 20.58s on a formula simplification. DAG size of input: 40 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:36:12,088 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 [] [2024-11-27 23:36:24,171 WARN L286 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 26 DAG size of output: 25 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:36:49,159 WARN L286 SmtUtils]: Spent 16.06s on a formula simplification. DAG size of input: 31 DAG size of output: 30 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:36:53,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:37:00,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:37:08,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:37:23,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:38:13,185 WARN L286 SmtUtils]: Spent 15.03s on a formula simplification. DAG size of input: 30 DAG size of output: 26 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:38:41,313 WARN L286 SmtUtils]: Spent 17.72s on a formula simplification. DAG size of input: 39 DAG size of output: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:38:45,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 23:38:59,027 WARN L286 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 33 DAG size of output: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:39:01,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:39:20,115 WARN L286 SmtUtils]: Spent 9.23s on a formula simplification. DAG size of input: 38 DAG size of output: 27 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:39:35,984 INFO L124 PetriNetUnfolderBase]: 4757/8255 cut-off events. [2024-11-27 23:39:35,985 INFO L125 PetriNetUnfolderBase]: For 116505/116505 co-relation queries the response was YES. [2024-11-27 23:39:36,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50433 conditions, 8255 events. 4757/8255 cut-off events. For 116505/116505 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 54813 event pairs, 630 based on Foata normal form. 21/8276 useless extension candidates. Maximal degree in co-relation 50308. Up to 1993 conditions per place. [2024-11-27 23:39:36,124 INFO L140 encePairwiseOnDemand]: 36/56 looper letters, 563 selfloop transitions, 739 changer transitions 0/1303 dead transitions. [2024-11-27 23:39:36,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 1303 transitions, 18973 flow [2024-11-27 23:39:36,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-27 23:39:36,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2024-11-27 23:39:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 2244 transitions. [2024-11-27 23:39:36,129 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5724489795918367 [2024-11-27 23:39:36,129 INFO L175 Difference]: Start difference. First operand has 319 places, 528 transitions, 7430 flow. Second operand 70 states and 2244 transitions. [2024-11-27 23:39:36,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 1303 transitions, 18973 flow [2024-11-27 23:39:37,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1303 transitions, 18651 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-11-27 23:39:37,072 INFO L231 Difference]: Finished difference. Result has 402 places, 968 transitions, 16245 flow [2024-11-27 23:39:37,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=7119, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=356, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=70, PETRI_FLOW=16245, PETRI_PLACES=402, PETRI_TRANSITIONS=968} [2024-11-27 23:39:37,073 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 348 predicate places. [2024-11-27 23:39:37,073 INFO L471 AbstractCegarLoop]: Abstraction has has 402 places, 968 transitions, 16245 flow [2024-11-27 23:39:37,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 23.72) internal successors, (593), 25 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:37,074 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:39:37,074 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] [2024-11-27 23:39:37,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 23:39:37,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 23:39:37,274 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:39:37,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:37,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1362114564, now seen corresponding path program 10 times [2024-11-27 23:39:37,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:37,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068390853] [2024-11-27 23:39:37,275 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:39:37,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:37,297 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:39:37,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:39:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068390853] [2024-11-27 23:39:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068390853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:37,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:39:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049968984] [2024-11-27 23:39:37,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:37,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:39:37,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:37,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:39:37,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:39:37,650 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:39:37,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 968 transitions, 16245 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:37,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:39:37,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:39:37,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:39:41,856 INFO L124 PetriNetUnfolderBase]: 4774/8290 cut-off events. [2024-11-27 23:39:41,856 INFO L125 PetriNetUnfolderBase]: For 150001/150001 co-relation queries the response was YES. [2024-11-27 23:39:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58682 conditions, 8290 events. 4774/8290 cut-off events. For 150001/150001 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 54680 event pairs, 2103 based on Foata normal form. 3/8293 useless extension candidates. Maximal degree in co-relation 58534. Up to 7587 conditions per place. [2024-11-27 23:39:42,023 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 931 selfloop transitions, 90 changer transitions 0/1022 dead transitions. [2024-11-27 23:39:42,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 1022 transitions, 18937 flow [2024-11-27 23:39:42,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:39:42,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:39:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 318 transitions. [2024-11-27 23:39:42,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5162337662337663 [2024-11-27 23:39:42,025 INFO L175 Difference]: Start difference. First operand has 402 places, 968 transitions, 16245 flow. Second operand 11 states and 318 transitions. [2024-11-27 23:39:42,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 1022 transitions, 18937 flow [2024-11-27 23:39:43,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1022 transitions, 16438 flow, removed 1131 selfloop flow, removed 25 redundant places. [2024-11-27 23:39:43,979 INFO L231 Difference]: Finished difference. Result has 392 places, 980 transitions, 14255 flow [2024-11-27 23:39:43,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=13790, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=880, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14255, PETRI_PLACES=392, PETRI_TRANSITIONS=980} [2024-11-27 23:39:43,980 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 338 predicate places. [2024-11-27 23:39:43,980 INFO L471 AbstractCegarLoop]: Abstraction has has 392 places, 980 transitions, 14255 flow [2024-11-27 23:39:43,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:43,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:39:43,981 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] [2024-11-27 23:39:43,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 23:39:43,981 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:39:43,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 492905972, now seen corresponding path program 11 times [2024-11-27 23:39:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125162676] [2024-11-27 23:39:43,982 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:39:43,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:43,997 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:39:43,997 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:39:44,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125162676] [2024-11-27 23:39:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125162676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:44,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:44,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:39:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359352446] [2024-11-27 23:39:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:44,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:39:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:44,323 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:39:44,323 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:39:44,350 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:39:44,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 980 transitions, 14255 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:44,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:39:44,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:39:44,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:39:48,578 INFO L124 PetriNetUnfolderBase]: 4791/8322 cut-off events. [2024-11-27 23:39:48,579 INFO L125 PetriNetUnfolderBase]: For 111012/111012 co-relation queries the response was YES. [2024-11-27 23:39:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53985 conditions, 8322 events. 4791/8322 cut-off events. For 111012/111012 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 54990 event pairs, 1962 based on Foata normal form. 3/8325 useless extension candidates. Maximal degree in co-relation 53844. Up to 7099 conditions per place. [2024-11-27 23:39:48,727 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 909 selfloop transitions, 170 changer transitions 0/1080 dead transitions. [2024-11-27 23:39:48,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1080 transitions, 17713 flow [2024-11-27 23:39:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:39:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:39:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 326 transitions. [2024-11-27 23:39:48,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5292207792207793 [2024-11-27 23:39:48,729 INFO L175 Difference]: Start difference. First operand has 392 places, 980 transitions, 14255 flow. Second operand 11 states and 326 transitions. [2024-11-27 23:39:48,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1080 transitions, 17713 flow [2024-11-27 23:39:50,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 1080 transitions, 17486 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-11-27 23:39:50,159 INFO L231 Difference]: Finished difference. Result has 401 places, 988 transitions, 14555 flow [2024-11-27 23:39:50,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14028, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=980, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=811, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14555, PETRI_PLACES=401, PETRI_TRANSITIONS=988} [2024-11-27 23:39:50,161 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 347 predicate places. [2024-11-27 23:39:50,161 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 988 transitions, 14555 flow [2024-11-27 23:39:50,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:50,161 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:39:50,161 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] [2024-11-27 23:39:50,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 23:39:50,161 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:39:50,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash 813299034, now seen corresponding path program 12 times [2024-11-27 23:39:50,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:50,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795590609] [2024-11-27 23:39:50,162 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:39:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:50,175 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:39:50,175 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:39:50,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:39:50,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:50,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795590609] [2024-11-27 23:39:50,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795590609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:50,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:50,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:39:50,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280047919] [2024-11-27 23:39:50,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:50,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:39:50,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:50,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:39:50,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:39:50,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:39:50,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 988 transitions, 14555 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:50,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:39:50,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:39:50,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:39:54,606 INFO L124 PetriNetUnfolderBase]: 4832/8396 cut-off events. [2024-11-27 23:39:54,607 INFO L125 PetriNetUnfolderBase]: For 114100/114100 co-relation queries the response was YES. [2024-11-27 23:39:54,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54878 conditions, 8396 events. 4832/8396 cut-off events. For 114100/114100 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 55565 event pairs, 2116 based on Foata normal form. 3/8399 useless extension candidates. Maximal degree in co-relation 54735. Up to 7653 conditions per place. [2024-11-27 23:39:54,746 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 946 selfloop transitions, 110 changer transitions 0/1057 dead transitions. [2024-11-27 23:39:54,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 1057 transitions, 17522 flow [2024-11-27 23:39:54,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:39:54,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:39:54,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 374 transitions. [2024-11-27 23:39:54,747 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5137362637362637 [2024-11-27 23:39:54,747 INFO L175 Difference]: Start difference. First operand has 401 places, 988 transitions, 14555 flow. Second operand 13 states and 374 transitions. [2024-11-27 23:39:54,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 1057 transitions, 17522 flow [2024-11-27 23:39:56,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 1057 transitions, 17198 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-11-27 23:39:56,070 INFO L231 Difference]: Finished difference. Result has 410 places, 1009 transitions, 14970 flow [2024-11-27 23:39:56,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14240, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14970, PETRI_PLACES=410, PETRI_TRANSITIONS=1009} [2024-11-27 23:39:56,072 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 356 predicate places. [2024-11-27 23:39:56,072 INFO L471 AbstractCegarLoop]: Abstraction has has 410 places, 1009 transitions, 14970 flow [2024-11-27 23:39:56,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:56,072 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:39:56,072 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] [2024-11-27 23:39:56,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 23:39:56,073 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:39:56,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:39:56,074 INFO L85 PathProgramCache]: Analyzing trace with hash 2106902210, now seen corresponding path program 13 times [2024-11-27 23:39:56,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:39:56,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944166776] [2024-11-27 23:39:56,074 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:39:56,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:39:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:39:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:39:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:39:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944166776] [2024-11-27 23:39:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944166776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:39:56,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:39:56,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:39:56,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806884712] [2024-11-27 23:39:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:39:56,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:39:56,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:39:56,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:39:56,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:39:56,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:39:56,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 1009 transitions, 14970 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:39:56,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:39:56,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:39:56,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:00,560 INFO L124 PetriNetUnfolderBase]: 4844/8421 cut-off events. [2024-11-27 23:40:00,560 INFO L125 PetriNetUnfolderBase]: For 115849/115849 co-relation queries the response was YES. [2024-11-27 23:40:00,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55209 conditions, 8421 events. 4844/8421 cut-off events. For 115849/115849 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 55785 event pairs, 2060 based on Foata normal form. 3/8424 useless extension candidates. Maximal degree in co-relation 55062. Up to 7469 conditions per place. [2024-11-27 23:40:00,700 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 951 selfloop transitions, 127 changer transitions 0/1079 dead transitions. [2024-11-27 23:40:00,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 1079 transitions, 17990 flow [2024-11-27 23:40:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:40:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:40:00,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 322 transitions. [2024-11-27 23:40:00,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-27 23:40:00,702 INFO L175 Difference]: Start difference. First operand has 410 places, 1009 transitions, 14970 flow. Second operand 11 states and 322 transitions. [2024-11-27 23:40:00,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 1079 transitions, 17990 flow [2024-11-27 23:40:02,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 1079 transitions, 17704 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-11-27 23:40:02,307 INFO L231 Difference]: Finished difference. Result has 417 places, 1017 transitions, 15171 flow [2024-11-27 23:40:02,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14688, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=883, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15171, PETRI_PLACES=417, PETRI_TRANSITIONS=1017} [2024-11-27 23:40:02,309 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 363 predicate places. [2024-11-27 23:40:02,309 INFO L471 AbstractCegarLoop]: Abstraction has has 417 places, 1017 transitions, 15171 flow [2024-11-27 23:40:02,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:02,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:02,310 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] [2024-11-27 23:40:02,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 23:40:02,310 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:02,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2140748466, now seen corresponding path program 14 times [2024-11-27 23:40:02,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:02,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139230819] [2024-11-27 23:40:02,311 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:40:02,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:02,325 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:40:02,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139230819] [2024-11-27 23:40:02,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139230819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:02,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:02,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:40:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140222592] [2024-11-27 23:40:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:02,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:40:02,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:02,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:40:02,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:40:02,733 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:02,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1017 transitions, 15171 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:02,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:02,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:02,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:07,834 INFO L124 PetriNetUnfolderBase]: 5000/8683 cut-off events. [2024-11-27 23:40:07,834 INFO L125 PetriNetUnfolderBase]: For 120732/120732 co-relation queries the response was YES. [2024-11-27 23:40:08,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57234 conditions, 8683 events. 5000/8683 cut-off events. For 120732/120732 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 57875 event pairs, 2114 based on Foata normal form. 3/8686 useless extension candidates. Maximal degree in co-relation 57083. Up to 7731 conditions per place. [2024-11-27 23:40:08,063 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 992 selfloop transitions, 145 changer transitions 0/1138 dead transitions. [2024-11-27 23:40:08,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 1138 transitions, 18869 flow [2024-11-27 23:40:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:40:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-27 23:40:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 421 transitions. [2024-11-27 23:40:08,065 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5369897959183674 [2024-11-27 23:40:08,065 INFO L175 Difference]: Start difference. First operand has 417 places, 1017 transitions, 15171 flow. Second operand 14 states and 421 transitions. [2024-11-27 23:40:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 1138 transitions, 18869 flow [2024-11-27 23:40:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 1138 transitions, 18525 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-11-27 23:40:09,656 INFO L231 Difference]: Finished difference. Result has 426 places, 1051 transitions, 15842 flow [2024-11-27 23:40:09,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=14827, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=15842, PETRI_PLACES=426, PETRI_TRANSITIONS=1051} [2024-11-27 23:40:09,658 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 372 predicate places. [2024-11-27 23:40:09,658 INFO L471 AbstractCegarLoop]: Abstraction has has 426 places, 1051 transitions, 15842 flow [2024-11-27 23:40:09,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:09,658 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:09,658 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] [2024-11-27 23:40:09,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 23:40:09,658 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:09,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:09,659 INFO L85 PathProgramCache]: Analyzing trace with hash 326933268, now seen corresponding path program 15 times [2024-11-27 23:40:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:09,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065975031] [2024-11-27 23:40:09,659 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 23:40:09,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:09,670 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 23:40:09,670 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065975031] [2024-11-27 23:40:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065975031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:09,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:09,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:40:09,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771482025] [2024-11-27 23:40:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:09,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:40:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:09,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:40:09,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:40:09,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:09,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1051 transitions, 15842 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:09,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:09,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:09,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:14,240 INFO L124 PetriNetUnfolderBase]: 5018/8728 cut-off events. [2024-11-27 23:40:14,240 INFO L125 PetriNetUnfolderBase]: For 124111/124111 co-relation queries the response was YES. [2024-11-27 23:40:14,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57722 conditions, 8728 events. 5018/8728 cut-off events. For 124111/124111 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 58371 event pairs, 2196 based on Foata normal form. 3/8731 useless extension candidates. Maximal degree in co-relation 57569. Up to 7998 conditions per place. [2024-11-27 23:40:14,460 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 1007 selfloop transitions, 90 changer transitions 0/1098 dead transitions. [2024-11-27 23:40:14,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1098 transitions, 18515 flow [2024-11-27 23:40:14,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:40:14,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-27 23:40:14,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 322 transitions. [2024-11-27 23:40:14,461 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-11-27 23:40:14,461 INFO L175 Difference]: Start difference. First operand has 426 places, 1051 transitions, 15842 flow. Second operand 11 states and 322 transitions. [2024-11-27 23:40:14,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1098 transitions, 18515 flow [2024-11-27 23:40:16,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 1098 transitions, 18300 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-11-27 23:40:16,103 INFO L231 Difference]: Finished difference. Result has 434 places, 1062 transitions, 16065 flow [2024-11-27 23:40:16,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=15635, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1051, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16065, PETRI_PLACES=434, PETRI_TRANSITIONS=1062} [2024-11-27 23:40:16,104 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 380 predicate places. [2024-11-27 23:40:16,104 INFO L471 AbstractCegarLoop]: Abstraction has has 434 places, 1062 transitions, 16065 flow [2024-11-27 23:40:16,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:16,104 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:16,105 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] [2024-11-27 23:40:16,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-27 23:40:16,105 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:16,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:16,105 INFO L85 PathProgramCache]: Analyzing trace with hash -788776943, now seen corresponding path program 5 times [2024-11-27 23:40:16,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:16,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191019834] [2024-11-27 23:40:16,106 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:40:16,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:16,125 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:40:16,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:16,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:16,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191019834] [2024-11-27 23:40:16,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191019834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:16,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:16,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:40:16,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141516425] [2024-11-27 23:40:16,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:16,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:40:16,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:16,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:40:16,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:40:16,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:16,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 1062 transitions, 16065 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:16,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:16,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:21,083 INFO L124 PetriNetUnfolderBase]: 5160/8974 cut-off events. [2024-11-27 23:40:21,083 INFO L125 PetriNetUnfolderBase]: For 129128/129128 co-relation queries the response was YES. [2024-11-27 23:40:21,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59653 conditions, 8974 events. 5160/8974 cut-off events. For 129128/129128 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 60317 event pairs, 2217 based on Foata normal form. 26/9000 useless extension candidates. Maximal degree in co-relation 59494. Up to 8074 conditions per place. [2024-11-27 23:40:21,339 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 1050 selfloop transitions, 99 changer transitions 0/1150 dead transitions. [2024-11-27 23:40:21,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 1150 transitions, 19582 flow [2024-11-27 23:40:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:40:21,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-27 23:40:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-11-27 23:40:21,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5647321428571429 [2024-11-27 23:40:21,341 INFO L175 Difference]: Start difference. First operand has 434 places, 1062 transitions, 16065 flow. Second operand 8 states and 253 transitions. [2024-11-27 23:40:21,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 1150 transitions, 19582 flow [2024-11-27 23:40:23,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 1150 transitions, 19351 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-11-27 23:40:23,162 INFO L231 Difference]: Finished difference. Result has 440 places, 1079 transitions, 16495 flow [2024-11-27 23:40:23,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=15838, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16495, PETRI_PLACES=440, PETRI_TRANSITIONS=1079} [2024-11-27 23:40:23,163 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 386 predicate places. [2024-11-27 23:40:23,163 INFO L471 AbstractCegarLoop]: Abstraction has has 440 places, 1079 transitions, 16495 flow [2024-11-27 23:40:23,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:23,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:23,163 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] [2024-11-27 23:40:23,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-27 23:40:23,164 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:23,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 88165431, now seen corresponding path program 6 times [2024-11-27 23:40:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310549971] [2024-11-27 23:40:23,165 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:40:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:23,181 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:40:23,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:23,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:23,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310549971] [2024-11-27 23:40:23,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310549971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:23,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:23,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:40:23,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241354636] [2024-11-27 23:40:23,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:23,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:40:23,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:23,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:40:23,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:40:23,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:23,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 1079 transitions, 16495 flow. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:23,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:23,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:23,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:29,716 INFO L124 PetriNetUnfolderBase]: 5214/9068 cut-off events. [2024-11-27 23:40:29,716 INFO L125 PetriNetUnfolderBase]: For 135220/135220 co-relation queries the response was YES. [2024-11-27 23:40:29,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60795 conditions, 9068 events. 5214/9068 cut-off events. For 135220/135220 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 61097 event pairs, 1906 based on Foata normal form. 18/9086 useless extension candidates. Maximal degree in co-relation 60633. Up to 6618 conditions per place. [2024-11-27 23:40:29,933 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 1100 selfloop transitions, 113 changer transitions 0/1214 dead transitions. [2024-11-27 23:40:29,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 1214 transitions, 20581 flow [2024-11-27 23:40:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:40:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-27 23:40:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-11-27 23:40:29,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-11-27 23:40:29,934 INFO L175 Difference]: Start difference. First operand has 440 places, 1079 transitions, 16495 flow. Second operand 9 states and 287 transitions. [2024-11-27 23:40:29,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 1214 transitions, 20581 flow [2024-11-27 23:40:31,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1214 transitions, 20379 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-11-27 23:40:31,543 INFO L231 Difference]: Finished difference. Result has 444 places, 1084 transitions, 16671 flow [2024-11-27 23:40:31,544 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=16293, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16671, PETRI_PLACES=444, PETRI_TRANSITIONS=1084} [2024-11-27 23:40:31,544 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 390 predicate places. [2024-11-27 23:40:31,544 INFO L471 AbstractCegarLoop]: Abstraction has has 444 places, 1084 transitions, 16671 flow [2024-11-27 23:40:31,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 7 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:31,545 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:31,545 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] [2024-11-27 23:40:31,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-27 23:40:31,545 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:31,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1023663170, now seen corresponding path program 16 times [2024-11-27 23:40:31,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:31,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036074449] [2024-11-27 23:40:31,546 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 23:40:31,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:31,566 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 23:40:31,567 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:31,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:31,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:31,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036074449] [2024-11-27 23:40:31,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036074449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:31,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:31,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:40:31,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867212144] [2024-11-27 23:40:31,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:31,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:40:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:31,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:40:31,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:40:31,938 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:31,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 1084 transitions, 16671 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:31,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:31,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:31,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:37,346 INFO L124 PetriNetUnfolderBase]: 5220/9083 cut-off events. [2024-11-27 23:40:37,347 INFO L125 PetriNetUnfolderBase]: For 138388/138388 co-relation queries the response was YES. [2024-11-27 23:40:37,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61150 conditions, 9083 events. 5220/9083 cut-off events. For 138388/138388 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 61372 event pairs, 2295 based on Foata normal form. 3/9086 useless extension candidates. Maximal degree in co-relation 60988. Up to 8306 conditions per place. [2024-11-27 23:40:37,596 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 1025 selfloop transitions, 103 changer transitions 0/1129 dead transitions. [2024-11-27 23:40:37,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1129 transitions, 19431 flow [2024-11-27 23:40:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:40:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:40:37,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 349 transitions. [2024-11-27 23:40:37,597 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5193452380952381 [2024-11-27 23:40:37,598 INFO L175 Difference]: Start difference. First operand has 444 places, 1084 transitions, 16671 flow. Second operand 12 states and 349 transitions. [2024-11-27 23:40:37,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1129 transitions, 19431 flow [2024-11-27 23:40:39,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 1129 transitions, 19259 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-27 23:40:39,508 INFO L231 Difference]: Finished difference. Result has 453 places, 1091 transitions, 16940 flow [2024-11-27 23:40:39,509 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=16499, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1084, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16940, PETRI_PLACES=453, PETRI_TRANSITIONS=1091} [2024-11-27 23:40:39,509 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 399 predicate places. [2024-11-27 23:40:39,509 INFO L471 AbstractCegarLoop]: Abstraction has has 453 places, 1091 transitions, 16940 flow [2024-11-27 23:40:39,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:39,510 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:39,510 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] [2024-11-27 23:40:39,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-27 23:40:39,510 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:39,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:39,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1212550070, now seen corresponding path program 17 times [2024-11-27 23:40:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:39,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724886904] [2024-11-27 23:40:39,511 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 23:40:39,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:39,525 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-27 23:40:39,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:39,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:39,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724886904] [2024-11-27 23:40:39,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724886904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:39,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:39,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:40:39,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424018791] [2024-11-27 23:40:39,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:39,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:40:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:39,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:40:39,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:40:39,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:39,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 1091 transitions, 16940 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:39,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:39,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:39,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:45,323 INFO L124 PetriNetUnfolderBase]: 5243/9125 cut-off events. [2024-11-27 23:40:45,324 INFO L125 PetriNetUnfolderBase]: For 140453/140453 co-relation queries the response was YES. [2024-11-27 23:40:45,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61670 conditions, 9125 events. 5243/9125 cut-off events. For 140453/140453 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 61763 event pairs, 2295 based on Foata normal form. 3/9128 useless extension candidates. Maximal degree in co-relation 61505. Up to 8319 conditions per place. [2024-11-27 23:40:45,803 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 1027 selfloop transitions, 115 changer transitions 0/1143 dead transitions. [2024-11-27 23:40:45,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 1143 transitions, 19839 flow [2024-11-27 23:40:45,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 23:40:45,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-27 23:40:45,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 376 transitions. [2024-11-27 23:40:45,805 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165 [2024-11-27 23:40:45,805 INFO L175 Difference]: Start difference. First operand has 453 places, 1091 transitions, 16940 flow. Second operand 13 states and 376 transitions. [2024-11-27 23:40:45,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 1143 transitions, 19839 flow [2024-11-27 23:40:47,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 1143 transitions, 19505 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-11-27 23:40:47,565 INFO L231 Difference]: Finished difference. Result has 459 places, 1103 transitions, 17176 flow [2024-11-27 23:40:47,566 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=16606, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1091, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=977, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=17176, PETRI_PLACES=459, PETRI_TRANSITIONS=1103} [2024-11-27 23:40:47,567 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 405 predicate places. [2024-11-27 23:40:47,567 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 1103 transitions, 17176 flow [2024-11-27 23:40:47,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:47,567 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:47,567 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] [2024-11-27 23:40:47,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-27 23:40:47,567 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:47,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash 300632532, now seen corresponding path program 18 times [2024-11-27 23:40:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109132113] [2024-11-27 23:40:47,568 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 23:40:47,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:47,586 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-27 23:40:47,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:40:47,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:47,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109132113] [2024-11-27 23:40:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109132113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:40:47,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:40:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 23:40:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398132611] [2024-11-27 23:40:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:40:47,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 23:40:47,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:47,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 23:40:47,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-27 23:40:47,940 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:47,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 1103 transitions, 17176 flow. Second operand has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:47,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:47,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:47,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:40:53,228 INFO L124 PetriNetUnfolderBase]: 5263/9162 cut-off events. [2024-11-27 23:40:53,228 INFO L125 PetriNetUnfolderBase]: For 140981/140981 co-relation queries the response was YES. [2024-11-27 23:40:53,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62042 conditions, 9162 events. 5263/9162 cut-off events. For 140981/140981 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 62103 event pairs, 2249 based on Foata normal form. 3/9165 useless extension candidates. Maximal degree in co-relation 61876. Up to 8184 conditions per place. [2024-11-27 23:40:53,499 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 1035 selfloop transitions, 140 changer transitions 0/1176 dead transitions. [2024-11-27 23:40:53,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 1176 transitions, 20463 flow [2024-11-27 23:40:53,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 23:40:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-27 23:40:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 350 transitions. [2024-11-27 23:40:53,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-27 23:40:53,500 INFO L175 Difference]: Start difference. First operand has 459 places, 1103 transitions, 17176 flow. Second operand 12 states and 350 transitions. [2024-11-27 23:40:53,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 1176 transitions, 20463 flow [2024-11-27 23:40:55,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 1176 transitions, 20186 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-11-27 23:40:55,447 INFO L231 Difference]: Finished difference. Result has 463 places, 1113 transitions, 17496 flow [2024-11-27 23:40:55,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=16905, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=964, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17496, PETRI_PLACES=463, PETRI_TRANSITIONS=1113} [2024-11-27 23:40:55,448 INFO L279 CegarLoopForPetriNet]: 54 programPoint places, 409 predicate places. [2024-11-27 23:40:55,448 INFO L471 AbstractCegarLoop]: Abstraction has has 463 places, 1113 transitions, 17496 flow [2024-11-27 23:40:55,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:55,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:40:55,448 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] [2024-11-27 23:40:55,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-27 23:40:55,448 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-27 23:40:55,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:40:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1172311106, now seen corresponding path program 19 times [2024-11-27 23:40:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:40:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577306233] [2024-11-27 23:40:55,450 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:40:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:55,858 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:55,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:40:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577306233] [2024-11-27 23:40:55,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577306233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:40:55,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454639638] [2024-11-27 23:40:55,859 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 23:40:55,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:40:55,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:40:55,864 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:40:55,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93ce4d2c-5ee4-429e-9e4a-7c165e6d449b/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 23:40:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:40:56,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 23:40:56,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:40:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:56,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:40:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:40:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454639638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:40:57,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:40:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 24 [2024-11-27 23:40:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729810906] [2024-11-27 23:40:57,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:40:57,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:40:57,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:40:57,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:40:57,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:40:57,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-11-27 23:40:57,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 1113 transitions, 17496 flow. Second operand has 24 states, 24 states have (on average 23.791666666666668) internal successors, (571), 24 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 23:40:57,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:40:57,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-11-27 23:40:57,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:41:18,237 WARN L286 SmtUtils]: Spent 20.65s on a formula simplification. DAG size of input: 42 DAG size of output: 39 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-27 23:41:21,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-27 23:42:00,266 WARN L286 SmtUtils]: Spent 26.85s on a formula simplification. DAG size of input: 50 DAG size of output: 47 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)