./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe017_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya --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 f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:07:45,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:07:45,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 02:07:45,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:07:45,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:07:45,910 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:07:45,910 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:07:45,911 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:07:45,911 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:07:45,912 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:07:45,912 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:07:45,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:07:45,914 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:07:45,914 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:07:45,915 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:07:45,915 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:07:45,916 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:07:45,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:07:45,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:07:45,918 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:07:45,918 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 02:07:45,919 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 02:07:45,920 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 02:07:45,920 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:07:45,921 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:07:45,921 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:07:45,922 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:07:45,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:07:45,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:07:45,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:07:45,923 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:07:45,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:07:45,924 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:07:45,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:07:45,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:07:45,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:07:45,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:07:45,925 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:07:45,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:07:45,926 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:07:45,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:07:45,926 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f42e8f5213d7b87505465b65029831bd75698bf771428502e6718d43723a660f [2023-11-29 02:07:46,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:07:46,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:07:46,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:07:46,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:07:46,148 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:07:46,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-29 02:07:48,837 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:07:49,076 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:07:49,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/sv-benchmarks/c/pthread-wmm/safe017_tso.i [2023-11-29 02:07:49,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/data/78289df23/6eb29d3a02d44e988317300677eb86de/FLAG443c1212b [2023-11-29 02:07:49,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/data/78289df23/6eb29d3a02d44e988317300677eb86de [2023-11-29 02:07:49,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:07:49,109 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:07:49,110 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:07:49,110 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:07:49,115 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:07:49,115 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,116 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d9a648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49, skipping insertion in model container [2023-11-29 02:07:49,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,168 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:07:49,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:07:49,473 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:07:49,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:07:49,549 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:07:49,549 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 02:07:49,557 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:07:49,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49 WrapperNode [2023-11-29 02:07:49,558 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:07:49,559 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:07:49,559 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:07:49,559 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:07:49,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,605 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2023-11-29 02:07:49,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:07:49,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:07:49,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:07:49,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:07:49,618 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,622 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,637 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-29 02:07:49,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,648 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,650 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:07:49,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:07:49,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:07:49,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:07:49,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (1/1) ... [2023-11-29 02:07:49,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:07:49,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:49,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:07:49,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:07:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:07:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:07:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:07:49,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 02:07:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 02:07:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:07:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:07:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:07:49,719 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-29 02:07:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-29 02:07:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-29 02:07:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-29 02:07:49,720 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-29 02:07:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-29 02:07:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:07:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:07:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:07:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 02:07:49,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 02:07:49,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:07:49,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:07:49,723 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:07:49,865 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:07:49,868 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:07:50,025 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:07:50,110 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:07:50,110 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 02:07:50,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:50 BoogieIcfgContainer [2023-11-29 02:07:50,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:07:50,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:07:50,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:07:50,116 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:07:50,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:07:49" (1/3) ... [2023-11-29 02:07:50,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2492e070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:07:50, skipping insertion in model container [2023-11-29 02:07:50,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:07:49" (2/3) ... [2023-11-29 02:07:50,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2492e070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:07:50, skipping insertion in model container [2023-11-29 02:07:50,118 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:50" (3/3) ... [2023-11-29 02:07:50,119 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-11-29 02:07:50,138 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:07:50,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-29 02:07:50,139 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:07:50,181 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:07:50,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 51 transitions, 114 flow [2023-11-29 02:07:50,237 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2023-11-29 02:07:50,238 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:07:50,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 48 events. 2/48 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-29 02:07:50,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 51 transitions, 114 flow [2023-11-29 02:07:50,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 47 transitions, 103 flow [2023-11-29 02:07:50,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:07:50,263 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@64a721c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:07:50,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-29 02:07:50,266 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:07:50,267 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 02:07:50,267 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:07:50,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:50,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 02:07:50,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:50,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:50,273 INFO L85 PathProgramCache]: Analyzing trace with hash 7218, now seen corresponding path program 1 times [2023-11-29 02:07:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088886245] [2023-11-29 02:07:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:50,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:50,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088886245] [2023-11-29 02:07:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088886245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:50,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:50,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:07:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637155954] [2023-11-29 02:07:50,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:50,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:50,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:50,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:50,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 51 [2023-11-29 02:07:50,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:50,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 51 [2023-11-29 02:07:50,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:50,709 INFO L124 PetriNetUnfolderBase]: 75/245 cut-off events. [2023-11-29 02:07:50,709 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 02:07:50,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 245 events. 75/245 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1371 event pairs, 63 based on Foata normal form. 16/234 useless extension candidates. Maximal degree in co-relation 387. Up to 117 conditions per place. [2023-11-29 02:07:50,714 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-29 02:07:50,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 46 transitions, 137 flow [2023-11-29 02:07:50,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:50,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 02:07:50,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2023-11-29 02:07:50,725 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:50,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,736 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,738 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 103 flow. Second operand 3 states and 114 transitions. [2023-11-29 02:07:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 46 transitions, 137 flow [2023-11-29 02:07:50,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:50,743 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-29 02:07:50,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-29 02:07:50,748 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2023-11-29 02:07:50,749 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-29 02:07:50,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:50,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 02:07:50,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:07:50,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 7219, now seen corresponding path program 1 times [2023-11-29 02:07:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052175759] [2023-11-29 02:07:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:50,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:50,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052175759] [2023-11-29 02:07:50,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052175759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:50,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:50,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 02:07:50,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581381461] [2023-11-29 02:07:50,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:50,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:50,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:50,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:50,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:50,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 51 [2023-11-29 02:07:50,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:50,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 51 [2023-11-29 02:07:50,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:50,948 INFO L124 PetriNetUnfolderBase]: 75/244 cut-off events. [2023-11-29 02:07:50,948 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 02:07:50,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 244 events. 75/244 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1348 event pairs, 63 based on Foata normal form. 1/218 useless extension candidates. Maximal degree in co-relation 395. Up to 116 conditions per place. [2023-11-29 02:07:50,952 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 15 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 02:07:50,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 134 flow [2023-11-29 02:07:50,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 02:07:50,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2023-11-29 02:07:50,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:50,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 02:07:50,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,958 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 114 transitions. [2023-11-29 02:07:50,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 134 flow [2023-11-29 02:07:50,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:50,961 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-29 02:07:50,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-29 02:07:50,962 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -4 predicate places. [2023-11-29 02:07:50,963 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-29 02:07:50,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:50,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:50,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:07:50,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:07:50,964 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:50,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:50,964 INFO L85 PathProgramCache]: Analyzing trace with hash 215236768, now seen corresponding path program 1 times [2023-11-29 02:07:50,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:50,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115740066] [2023-11-29 02:07:50,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:50,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:51,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:51,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115740066] [2023-11-29 02:07:51,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115740066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:51,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:51,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:07:51,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104992706] [2023-11-29 02:07:51,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:51,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:51,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:51,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:51,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:51,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 51 [2023-11-29 02:07:51,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:51,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 51 [2023-11-29 02:07:51,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:51,107 INFO L124 PetriNetUnfolderBase]: 76/242 cut-off events. [2023-11-29 02:07:51,107 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 02:07:51,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 242 events. 76/242 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1308 event pairs, 63 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 396. Up to 116 conditions per place. [2023-11-29 02:07:51,110 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-29 02:07:51,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 134 flow [2023-11-29 02:07:51,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 02:07:51,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2023-11-29 02:07:51,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:51,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,115 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,116 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 112 transitions. [2023-11-29 02:07:51,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 134 flow [2023-11-29 02:07:51,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:51,118 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-29 02:07:51,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-29 02:07:51,119 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2023-11-29 02:07:51,119 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-29 02:07:51,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:51,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:07:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:07:51,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:51,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:51,121 INFO L85 PathProgramCache]: Analyzing trace with hash 215236769, now seen corresponding path program 1 times [2023-11-29 02:07:51,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856231631] [2023-11-29 02:07:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:51,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:51,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:51,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856231631] [2023-11-29 02:07:51,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856231631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:51,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:51,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:07:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231054568] [2023-11-29 02:07:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:51,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:51,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 51 [2023-11-29 02:07:51,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:51,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 51 [2023-11-29 02:07:51,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:51,274 INFO L124 PetriNetUnfolderBase]: 75/240 cut-off events. [2023-11-29 02:07:51,274 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 02:07:51,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403 conditions, 240 events. 75/240 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1314 event pairs, 42 based on Foata normal form. 2/220 useless extension candidates. Maximal degree in co-relation 393. Up to 113 conditions per place. [2023-11-29 02:07:51,277 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 15 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-29 02:07:51,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 130 flow [2023-11-29 02:07:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:51,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:51,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 02:07:51,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2023-11-29 02:07:51,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:51,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,281 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,281 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 114 transitions. [2023-11-29 02:07:51,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 130 flow [2023-11-29 02:07:51,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:51,283 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-29 02:07:51,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-11-29 02:07:51,285 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-29 02:07:51,285 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-29 02:07:51,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:51,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:51,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:07:51,286 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:51,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:51,286 INFO L85 PathProgramCache]: Analyzing trace with hash -267414371, now seen corresponding path program 1 times [2023-11-29 02:07:51,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:51,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751662759] [2023-11-29 02:07:51,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:51,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:51,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:51,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751662759] [2023-11-29 02:07:51,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751662759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:51,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:51,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:07:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83582206] [2023-11-29 02:07:51,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:51,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:51,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:51,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 51 [2023-11-29 02:07:51,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2023-11-29 02:07:51,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:51,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 51 [2023-11-29 02:07:51,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:51,435 INFO L124 PetriNetUnfolderBase]: 79/240 cut-off events. [2023-11-29 02:07:51,435 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 02:07:51,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 240 events. 79/240 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1319 event pairs, 27 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 401. Up to 112 conditions per place. [2023-11-29 02:07:51,438 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 16 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-11-29 02:07:51,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 130 flow [2023-11-29 02:07:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 02:07:51,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7320261437908496 [2023-11-29 02:07:51,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:51,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 02:07:51,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,442 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 3 states and 112 transitions. [2023-11-29 02:07:51,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 130 flow [2023-11-29 02:07:51,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:51,444 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 88 flow [2023-11-29 02:07:51,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2023-11-29 02:07:51,445 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-11-29 02:07:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 88 flow [2023-11-29 02:07:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 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) [2023-11-29 02:07:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:07:51,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:51,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash -267414370, now seen corresponding path program 1 times [2023-11-29 02:07:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:51,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582503820] [2023-11-29 02:07:51,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:51,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:51,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:51,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582503820] [2023-11-29 02:07:51,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582503820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:51,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:51,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:07:51,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425882711] [2023-11-29 02:07:51,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:51,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:07:51,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:51,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:07:51,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:07:51,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 51 [2023-11-29 02:07:51,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:51,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 51 [2023-11-29 02:07:51,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:51,593 INFO L124 PetriNetUnfolderBase]: 75/219 cut-off events. [2023-11-29 02:07:51,594 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 02:07:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 219 events. 75/219 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1107 event pairs, 60 based on Foata normal form. 4/216 useless extension candidates. Maximal degree in co-relation 374. Up to 104 conditions per place. [2023-11-29 02:07:51,596 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 15 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-29 02:07:51,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 126 flow [2023-11-29 02:07:51,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:07:51,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:07:51,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-11-29 02:07:51,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7450980392156863 [2023-11-29 02:07:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:51,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-11-29 02:07:51,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,600 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 88 flow. Second operand 3 states and 114 transitions. [2023-11-29 02:07:51,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 126 flow [2023-11-29 02:07:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:51,601 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 86 flow [2023-11-29 02:07:51,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-29 02:07:51,602 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2023-11-29 02:07:51,603 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 86 flow [2023-11-29 02:07:51,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:51,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:51,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:51,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:07:51,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:51,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:51,604 INFO L85 PathProgramCache]: Analyzing trace with hash -449139712, now seen corresponding path program 1 times [2023-11-29 02:07:51,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:51,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558563120] [2023-11-29 02:07:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:52,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558563120] [2023-11-29 02:07:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558563120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:07:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702648603] [2023-11-29 02:07:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:52,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:07:52,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:52,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:07:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:07:52,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2023-11-29 02:07:52,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 86 flow. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:52,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2023-11-29 02:07:52,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:52,218 INFO L124 PetriNetUnfolderBase]: 76/225 cut-off events. [2023-11-29 02:07:52,219 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-29 02:07:52,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 225 events. 76/225 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1174 event pairs, 19 based on Foata normal form. 8/221 useless extension candidates. Maximal degree in co-relation 383. Up to 104 conditions per place. [2023-11-29 02:07:52,221 INFO L140 encePairwiseOnDemand]: 46/51 looper letters, 14 selfloop transitions, 3 changer transitions 4/43 dead transitions. [2023-11-29 02:07:52,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 138 flow [2023-11-29 02:07:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:07:52,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:07:52,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2023-11-29 02:07:52,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405228758169934 [2023-11-29 02:07:52,223 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 196 transitions. [2023-11-29 02:07:52,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 196 transitions. [2023-11-29 02:07:52,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:52,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 196 transitions. [2023-11-29 02:07:52,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.666666666666664) internal successors, (196), 6 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,226 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,226 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 86 flow. Second operand 6 states and 196 transitions. [2023-11-29 02:07:52,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 138 flow [2023-11-29 02:07:52,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:07:52,228 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 84 flow [2023-11-29 02:07:52,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-11-29 02:07:52,229 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -6 predicate places. [2023-11-29 02:07:52,229 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 84 flow [2023-11-29 02:07:52,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:52,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:52,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:07:52,230 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:52,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -449138334, now seen corresponding path program 1 times [2023-11-29 02:07:52,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:52,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045607040] [2023-11-29 02:07:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:52,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:52,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:52,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045607040] [2023-11-29 02:07:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045607040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:07:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683465068] [2023-11-29 02:07:52,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:52,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:07:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:07:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:07:52,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:52,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:52,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:52,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:52,872 INFO L124 PetriNetUnfolderBase]: 1466/2691 cut-off events. [2023-11-29 02:07:52,873 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 02:07:52,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5020 conditions, 2691 events. 1466/2691 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 19048 event pairs, 353 based on Foata normal form. 0/2588 useless extension candidates. Maximal degree in co-relation 5009. Up to 751 conditions per place. [2023-11-29 02:07:52,888 INFO L140 encePairwiseOnDemand]: 41/51 looper letters, 29 selfloop transitions, 6 changer transitions 55/106 dead transitions. [2023-11-29 02:07:52,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 412 flow [2023-11-29 02:07:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:07:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 02:07:52,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 326 transitions. [2023-11-29 02:07:52,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710239651416122 [2023-11-29 02:07:52,891 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 326 transitions. [2023-11-29 02:07:52,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 326 transitions. [2023-11-29 02:07:52,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:52,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 326 transitions. [2023-11-29 02:07:52,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.22222222222222) internal successors, (326), 9 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 51.0) internal successors, (510), 10 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,895 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 51.0) internal successors, (510), 10 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,895 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 84 flow. Second operand 9 states and 326 transitions. [2023-11-29 02:07:52,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 412 flow [2023-11-29 02:07:52,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 106 transitions, 404 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:52,898 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 161 flow [2023-11-29 02:07:52,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=161, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-11-29 02:07:52,899 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-11-29 02:07:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 161 flow [2023-11-29 02:07:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:52,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:07:52,899 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:52,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -64853021, now seen corresponding path program 1 times [2023-11-29 02:07:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:52,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897759843] [2023-11-29 02:07:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897759843] [2023-11-29 02:07:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897759843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:53,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:07:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437300219] [2023-11-29 02:07:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:53,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:53,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:53,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:53,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:53,506 INFO L124 PetriNetUnfolderBase]: 1014/2069 cut-off events. [2023-11-29 02:07:53,506 INFO L125 PetriNetUnfolderBase]: For 3106/3115 co-relation queries the response was YES. [2023-11-29 02:07:53,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5945 conditions, 2069 events. 1014/2069 cut-off events. For 3106/3115 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14775 event pairs, 179 based on Foata normal form. 79/2140 useless extension candidates. Maximal degree in co-relation 5926. Up to 637 conditions per place. [2023-11-29 02:07:53,524 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 39 selfloop transitions, 10 changer transitions 54/119 dead transitions. [2023-11-29 02:07:53,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 823 flow [2023-11-29 02:07:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 356 transitions. [2023-11-29 02:07:53,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6980392156862745 [2023-11-29 02:07:53,527 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 356 transitions. [2023-11-29 02:07:53,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 356 transitions. [2023-11-29 02:07:53,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:53,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 356 transitions. [2023-11-29 02:07:53,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.6) internal successors, (356), 10 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,531 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 161 flow. Second operand 10 states and 356 transitions. [2023-11-29 02:07:53,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 823 flow [2023-11-29 02:07:53,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 119 transitions, 711 flow, removed 27 selfloop flow, removed 4 redundant places. [2023-11-29 02:07:53,550 INFO L231 Difference]: Finished difference. Result has 67 places, 47 transitions, 259 flow [2023-11-29 02:07:53,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=259, PETRI_PLACES=67, PETRI_TRANSITIONS=47} [2023-11-29 02:07:53,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 12 predicate places. [2023-11-29 02:07:53,551 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 47 transitions, 259 flow [2023-11-29 02:07:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:53,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:07:53,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1462838109, now seen corresponding path program 1 times [2023-11-29 02:07:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:53,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512498448] [2023-11-29 02:07:53,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:53,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:53,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:53,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512498448] [2023-11-29 02:07:53,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512498448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:53,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:53,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:07:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046828351] [2023-11-29 02:07:53,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:53,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:53,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:53,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:53,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:53,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:53,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 47 transitions, 259 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:53,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:53,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:53,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:54,043 INFO L124 PetriNetUnfolderBase]: 856/1709 cut-off events. [2023-11-29 02:07:54,043 INFO L125 PetriNetUnfolderBase]: For 5086/5086 co-relation queries the response was YES. [2023-11-29 02:07:54,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1709 events. 856/1709 cut-off events. For 5086/5086 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11407 event pairs, 171 based on Foata normal form. 40/1734 useless extension candidates. Maximal degree in co-relation 5635. Up to 589 conditions per place. [2023-11-29 02:07:54,056 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 42 selfloop transitions, 14 changer transitions 38/110 dead transitions. [2023-11-29 02:07:54,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 110 transitions, 819 flow [2023-11-29 02:07:54,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 347 transitions. [2023-11-29 02:07:54,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6803921568627451 [2023-11-29 02:07:54,058 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 347 transitions. [2023-11-29 02:07:54,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 347 transitions. [2023-11-29 02:07:54,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:54,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 347 transitions. [2023-11-29 02:07:54,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 34.7) internal successors, (347), 10 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,062 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,062 INFO L175 Difference]: Start difference. First operand has 67 places, 47 transitions, 259 flow. Second operand 10 states and 347 transitions. [2023-11-29 02:07:54,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 110 transitions, 819 flow [2023-11-29 02:07:54,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 787 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-11-29 02:07:54,072 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 357 flow [2023-11-29 02:07:54,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=357, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-11-29 02:07:54,073 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2023-11-29 02:07:54,073 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 357 flow [2023-11-29 02:07:54,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:54,074 INFO L208 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] [2023-11-29 02:07:54,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:07:54,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:54,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1531839772, now seen corresponding path program 1 times [2023-11-29 02:07:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936149258] [2023-11-29 02:07:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:54,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936149258] [2023-11-29 02:07:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936149258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:54,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:54,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:07:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522305952] [2023-11-29 02:07:54,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:54,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:54,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:54,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:54,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:54,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:54,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:54,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:54,526 INFO L124 PetriNetUnfolderBase]: 771/1590 cut-off events. [2023-11-29 02:07:54,527 INFO L125 PetriNetUnfolderBase]: For 6757/6767 co-relation queries the response was YES. [2023-11-29 02:07:54,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1590 events. 771/1590 cut-off events. For 6757/6767 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10843 event pairs, 122 based on Foata normal form. 35/1603 useless extension candidates. Maximal degree in co-relation 5667. Up to 460 conditions per place. [2023-11-29 02:07:54,544 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 38 selfloop transitions, 14 changer transitions 32/100 dead transitions. [2023-11-29 02:07:54,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 853 flow [2023-11-29 02:07:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:54,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2023-11-29 02:07:54,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6470588235294118 [2023-11-29 02:07:54,546 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 330 transitions. [2023-11-29 02:07:54,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 330 transitions. [2023-11-29 02:07:54,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:54,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 330 transitions. [2023-11-29 02:07:54,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.0) internal successors, (330), 10 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,550 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,550 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 357 flow. Second operand 10 states and 330 transitions. [2023-11-29 02:07:54,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 853 flow [2023-11-29 02:07:54,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 787 flow, removed 33 selfloop flow, removed 10 redundant places. [2023-11-29 02:07:54,572 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 434 flow [2023-11-29 02:07:54,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=434, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2023-11-29 02:07:54,572 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 25 predicate places. [2023-11-29 02:07:54,573 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 434 flow [2023-11-29 02:07:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:54,573 INFO L208 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] [2023-11-29 02:07:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:07:54,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:54,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash -897345114, now seen corresponding path program 1 times [2023-11-29 02:07:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104137211] [2023-11-29 02:07:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:54,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:54,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104137211] [2023-11-29 02:07:54,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104137211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:54,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:54,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:07:54,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027198689] [2023-11-29 02:07:54,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:54,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:54,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:54,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:54,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:54,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 51 [2023-11-29 02:07:54,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 434 flow. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:54,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:54,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 51 [2023-11-29 02:07:54,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:55,121 INFO L124 PetriNetUnfolderBase]: 745/1750 cut-off events. [2023-11-29 02:07:55,121 INFO L125 PetriNetUnfolderBase]: For 7162/7247 co-relation queries the response was YES. [2023-11-29 02:07:55,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 1750 events. 745/1750 cut-off events. For 7162/7247 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13905 event pairs, 236 based on Foata normal form. 79/1758 useless extension candidates. Maximal degree in co-relation 5638. Up to 547 conditions per place. [2023-11-29 02:07:55,138 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 30 selfloop transitions, 7 changer transitions 34/97 dead transitions. [2023-11-29 02:07:55,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 792 flow [2023-11-29 02:07:55,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:07:55,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 02:07:55,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2023-11-29 02:07:55,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.681917211328976 [2023-11-29 02:07:55,140 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 313 transitions. [2023-11-29 02:07:55,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 313 transitions. [2023-11-29 02:07:55,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:55,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 313 transitions. [2023-11-29 02:07:55,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 51.0) internal successors, (510), 10 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,143 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 51.0) internal successors, (510), 10 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,143 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 434 flow. Second operand 9 states and 313 transitions. [2023-11-29 02:07:55,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 792 flow [2023-11-29 02:07:55,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 729 flow, removed 21 selfloop flow, removed 6 redundant places. [2023-11-29 02:07:55,162 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 387 flow [2023-11-29 02:07:55,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=387, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2023-11-29 02:07:55,163 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2023-11-29 02:07:55,163 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 387 flow [2023-11-29 02:07:55,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:55,163 INFO L208 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] [2023-11-29 02:07:55,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:07:55,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:55,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash -608015699, now seen corresponding path program 1 times [2023-11-29 02:07:55,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572239892] [2023-11-29 02:07:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572239892] [2023-11-29 02:07:55,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572239892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:55,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:55,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:07:55,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673452666] [2023-11-29 02:07:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:55,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:55,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:55,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 387 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:55,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:55,758 INFO L124 PetriNetUnfolderBase]: 837/1844 cut-off events. [2023-11-29 02:07:55,758 INFO L125 PetriNetUnfolderBase]: For 7195/7195 co-relation queries the response was YES. [2023-11-29 02:07:55,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6171 conditions, 1844 events. 837/1844 cut-off events. For 7195/7195 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13960 event pairs, 123 based on Foata normal form. 36/1850 useless extension candidates. Maximal degree in co-relation 6144. Up to 538 conditions per place. [2023-11-29 02:07:55,779 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 36 selfloop transitions, 16 changer transitions 30/98 dead transitions. [2023-11-29 02:07:55,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 98 transitions, 830 flow [2023-11-29 02:07:55,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 02:07:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 02:07:55,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2023-11-29 02:07:55,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2023-11-29 02:07:55,782 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 333 transitions. [2023-11-29 02:07:55,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 333 transitions. [2023-11-29 02:07:55,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:55,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 333 transitions. [2023-11-29 02:07:55,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 33.3) internal successors, (333), 10 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,785 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 51.0) internal successors, (561), 11 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,786 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 387 flow. Second operand 10 states and 333 transitions. [2023-11-29 02:07:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 98 transitions, 830 flow [2023-11-29 02:07:55,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 751 flow, removed 33 selfloop flow, removed 9 redundant places. [2023-11-29 02:07:55,809 INFO L231 Difference]: Finished difference. Result has 83 places, 50 transitions, 392 flow [2023-11-29 02:07:55,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=392, PETRI_PLACES=83, PETRI_TRANSITIONS=50} [2023-11-29 02:07:55,810 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 28 predicate places. [2023-11-29 02:07:55,810 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 50 transitions, 392 flow [2023-11-29 02:07:55,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:55,811 INFO L208 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] [2023-11-29 02:07:55,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:07:55,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:55,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:55,811 INFO L85 PathProgramCache]: Analyzing trace with hash -392024393, now seen corresponding path program 1 times [2023-11-29 02:07:55,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:55,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518011130] [2023-11-29 02:07:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:55,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:55,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518011130] [2023-11-29 02:07:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518011130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:55,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:55,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:07:55,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679080692] [2023-11-29 02:07:55,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:55,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:07:55,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:07:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:07:55,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2023-11-29 02:07:55,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 50 transitions, 392 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:55,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:55,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2023-11-29 02:07:55,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:56,309 INFO L124 PetriNetUnfolderBase]: 1507/2948 cut-off events. [2023-11-29 02:07:56,309 INFO L125 PetriNetUnfolderBase]: For 4202/4272 co-relation queries the response was YES. [2023-11-29 02:07:56,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7152 conditions, 2948 events. 1507/2948 cut-off events. For 4202/4272 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21503 event pairs, 391 based on Foata normal form. 153/2978 useless extension candidates. Maximal degree in co-relation 7126. Up to 1443 conditions per place. [2023-11-29 02:07:56,334 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 27 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-11-29 02:07:56,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 65 transitions, 491 flow [2023-11-29 02:07:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:07:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 02:07:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2023-11-29 02:07:56,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2023-11-29 02:07:56,336 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 150 transitions. [2023-11-29 02:07:56,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 150 transitions. [2023-11-29 02:07:56,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:56,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 150 transitions. [2023-11-29 02:07:56,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:56,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:56,338 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:56,338 INFO L175 Difference]: Start difference. First operand has 83 places, 50 transitions, 392 flow. Second operand 4 states and 150 transitions. [2023-11-29 02:07:56,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 65 transitions, 491 flow [2023-11-29 02:07:56,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 471 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-29 02:07:56,355 INFO L231 Difference]: Finished difference. Result has 76 places, 54 transitions, 410 flow [2023-11-29 02:07:56,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=410, PETRI_PLACES=76, PETRI_TRANSITIONS=54} [2023-11-29 02:07:56,356 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 21 predicate places. [2023-11-29 02:07:56,356 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 54 transitions, 410 flow [2023-11-29 02:07:56,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:56,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:56,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:56,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:07:56,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:56,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:56,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1313641990, now seen corresponding path program 1 times [2023-11-29 02:07:56,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:56,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311737778] [2023-11-29 02:07:56,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:56,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311737778] [2023-11-29 02:07:56,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311737778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:56,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:56,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 02:07:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938319268] [2023-11-29 02:07:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:56,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:07:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:07:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:07:56,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 51 [2023-11-29 02:07:56,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 54 transitions, 410 flow. Second operand has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:56,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:56,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 51 [2023-11-29 02:07:56,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:57,052 INFO L124 PetriNetUnfolderBase]: 1934/4032 cut-off events. [2023-11-29 02:07:57,052 INFO L125 PetriNetUnfolderBase]: For 12338/12495 co-relation queries the response was YES. [2023-11-29 02:07:57,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12249 conditions, 4032 events. 1934/4032 cut-off events. For 12338/12495 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34029 event pairs, 705 based on Foata normal form. 114/3752 useless extension candidates. Maximal degree in co-relation 12226. Up to 1153 conditions per place. [2023-11-29 02:07:57,084 INFO L140 encePairwiseOnDemand]: 42/51 looper letters, 35 selfloop transitions, 9 changer transitions 34/98 dead transitions. [2023-11-29 02:07:57,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 98 transitions, 883 flow [2023-11-29 02:07:57,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:07:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 02:07:57,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2023-11-29 02:07:57,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6834733893557423 [2023-11-29 02:07:57,086 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 244 transitions. [2023-11-29 02:07:57,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 244 transitions. [2023-11-29 02:07:57,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:57,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 244 transitions. [2023-11-29 02:07:57,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 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) [2023-11-29 02:07:57,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 51.0) internal successors, (408), 8 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,089 INFO L175 Difference]: Start difference. First operand has 76 places, 54 transitions, 410 flow. Second operand 7 states and 244 transitions. [2023-11-29 02:07:57,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 98 transitions, 883 flow [2023-11-29 02:07:57,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 98 transitions, 853 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-29 02:07:57,113 INFO L231 Difference]: Finished difference. Result has 82 places, 47 transitions, 323 flow [2023-11-29 02:07:57,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=82, PETRI_TRANSITIONS=47} [2023-11-29 02:07:57,114 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 27 predicate places. [2023-11-29 02:07:57,114 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 47 transitions, 323 flow [2023-11-29 02:07:57,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.0) internal successors, (196), 7 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:57,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:57,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:07:57,115 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:57,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:57,115 INFO L85 PathProgramCache]: Analyzing trace with hash -346636542, now seen corresponding path program 2 times [2023-11-29 02:07:57,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:57,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168702949] [2023-11-29 02:07:57,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:57,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:57,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:57,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168702949] [2023-11-29 02:07:57,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168702949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:57,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:57,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:07:57,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861197222] [2023-11-29 02:07:57,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:57,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:07:57,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:57,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:07:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:07:57,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2023-11-29 02:07:57,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 47 transitions, 323 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:57,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2023-11-29 02:07:57,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:57,420 INFO L124 PetriNetUnfolderBase]: 805/1536 cut-off events. [2023-11-29 02:07:57,420 INFO L125 PetriNetUnfolderBase]: For 1303/1695 co-relation queries the response was YES. [2023-11-29 02:07:57,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3992 conditions, 1536 events. 805/1536 cut-off events. For 1303/1695 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9440 event pairs, 90 based on Foata normal form. 107/1567 useless extension candidates. Maximal degree in co-relation 3968. Up to 696 conditions per place. [2023-11-29 02:07:57,427 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 28 selfloop transitions, 8 changer transitions 9/68 dead transitions. [2023-11-29 02:07:57,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 68 transitions, 471 flow [2023-11-29 02:07:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:07:57,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 02:07:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2023-11-29 02:07:57,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7411764705882353 [2023-11-29 02:07:57,429 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 189 transitions. [2023-11-29 02:07:57,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 189 transitions. [2023-11-29 02:07:57,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:57,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 189 transitions. [2023-11-29 02:07:57,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.8) internal successors, (189), 5 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,431 INFO L175 Difference]: Start difference. First operand has 82 places, 47 transitions, 323 flow. Second operand 5 states and 189 transitions. [2023-11-29 02:07:57,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 68 transitions, 471 flow [2023-11-29 02:07:57,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 68 transitions, 366 flow, removed 11 selfloop flow, removed 17 redundant places. [2023-11-29 02:07:57,437 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 230 flow [2023-11-29 02:07:57,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2023-11-29 02:07:57,437 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 14 predicate places. [2023-11-29 02:07:57,437 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 230 flow [2023-11-29 02:07:57,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:07:57,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:57,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:07:57,438 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-29 02:07:57,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:57,438 INFO L85 PathProgramCache]: Analyzing trace with hash 310618725, now seen corresponding path program 1 times [2023-11-29 02:07:57,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078829724] [2023-11-29 02:07:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:57,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:07:57,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:57,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078829724] [2023-11-29 02:07:57,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078829724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:57,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:57,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:07:57,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663357943] [2023-11-29 02:07:57,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:57,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:07:57,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:57,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:07:57,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:07:57,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 51 [2023-11-29 02:07:57,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 230 flow. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:07:57,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 51 [2023-11-29 02:07:57,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:07:57,666 INFO L124 PetriNetUnfolderBase]: 313/596 cut-off events. [2023-11-29 02:07:57,666 INFO L125 PetriNetUnfolderBase]: For 972/1304 co-relation queries the response was YES. [2023-11-29 02:07:57,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 596 events. 313/596 cut-off events. For 972/1304 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2812 event pairs, 17 based on Foata normal form. 72/633 useless extension candidates. Maximal degree in co-relation 1826. Up to 248 conditions per place. [2023-11-29 02:07:57,668 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 0 selfloop transitions, 0 changer transitions 59/59 dead transitions. [2023-11-29 02:07:57,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 343 flow [2023-11-29 02:07:57,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:07:57,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 02:07:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2023-11-29 02:07:57,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7026143790849673 [2023-11-29 02:07:57,670 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 215 transitions. [2023-11-29 02:07:57,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 215 transitions. [2023-11-29 02:07:57,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:07:57,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 215 transitions. [2023-11-29 02:07:57,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,673 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 230 flow. Second operand 6 states and 215 transitions. [2023-11-29 02:07:57,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 343 flow [2023-11-29 02:07:57,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 297 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-29 02:07:57,676 INFO L231 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2023-11-29 02:07:57,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2023-11-29 02:07:57,677 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-29 02:07:57,677 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2023-11-29 02:07:57,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:07:57,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-29 02:07:57,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-29 02:07:57,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-29 02:07:57,679 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-29 02:07:57,680 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-29 02:07:57,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:07:57,681 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:57,684 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 02:07:57,684 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 02:07:57,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 02:07:57 BasicIcfg [2023-11-29 02:07:57,688 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 02:07:57,689 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 02:07:57,689 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 02:07:57,689 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 02:07:57,689 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:07:50" (3/4) ... [2023-11-29 02:07:57,691 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 02:07:57,693 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-29 02:07:57,694 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-29 02:07:57,694 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-29 02:07:57,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 34 nodes and edges [2023-11-29 02:07:57,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-11-29 02:07:57,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 02:07:57,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 02:07:57,759 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 02:07:57,759 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 02:07:57,760 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 02:07:57,760 INFO L158 Benchmark]: Toolchain (without parser) took 8651.17ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 141.7MB in the beginning and 100.0MB in the end (delta: 41.7MB). Peak memory consumption was 125.4MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,761 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:07:57,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 448.05ms. Allocated memory is still 182.5MB. Free memory was 141.7MB in the beginning and 120.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,761 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.83ms. Allocated memory is still 182.5MB. Free memory was 120.7MB in the beginning and 118.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,762 INFO L158 Benchmark]: Boogie Preprocessor took 47.01ms. Allocated memory is still 182.5MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,762 INFO L158 Benchmark]: RCFGBuilder took 456.86ms. Allocated memory is still 182.5MB. Free memory was 116.5MB in the beginning and 93.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,762 INFO L158 Benchmark]: TraceAbstraction took 7575.39ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 92.6MB in the beginning and 105.3MB in the end (delta: -12.7MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,763 INFO L158 Benchmark]: Witness Printer took 70.91ms. Allocated memory is still 264.2MB. Free memory was 105.3MB in the beginning and 100.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 02:07:57,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 134.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 448.05ms. Allocated memory is still 182.5MB. Free memory was 141.7MB in the beginning and 120.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.83ms. Allocated memory is still 182.5MB. Free memory was 120.7MB in the beginning and 118.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.01ms. Allocated memory is still 182.5MB. Free memory was 118.6MB in the beginning and 116.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 456.86ms. Allocated memory is still 182.5MB. Free memory was 116.5MB in the beginning and 93.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7575.39ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 92.6MB in the beginning and 105.3MB in the end (delta: -12.7MB). Peak memory consumption was 70.9MB. Max. memory is 16.1GB. * Witness Printer took 70.91ms. Allocated memory is still 264.2MB. Free memory was 105.3MB in the beginning and 100.0MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 769]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 73 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.5s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 683 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 563 mSDsluCounter, 320 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1435 IncrementalHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 107 mSDtfsCounter, 1435 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=434occurred in iteration=11, InterpolantAutomatonStates: 104, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 262 ConstructedInterpolants, 0 QuantifiedInterpolants, 1373 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 02:07:57,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f6a0f9a-9131-41af-996c-7d18b33ae7dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE