./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx --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 d6f4376125179246714b78f2e2f349c8b75c8c24c937ac142dcf7789f615522d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:33,900 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:33,989 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 20:59:33,996 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:33,997 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:34,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:34,032 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:34,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:34,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:34,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:34,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:34,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:34,038 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:34,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:34,040 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:34,041 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:34,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:34,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:34,043 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 20:59:34,044 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 20:59:34,045 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 20:59:34,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:34,046 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:59:34,047 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 20:59:34,048 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:34,049 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:34,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:34,050 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:34,051 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:34,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:34,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:34,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:34,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:34,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:34,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:34,057 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:34,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:34,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:34,059 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:34,059 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_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4376125179246714b78f2e2f349c8b75c8c24c937ac142dcf7789f615522d [2023-11-21 20:59:34,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:34,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:34,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:34,468 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:34,469 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:34,471 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i [2023-11-21 20:59:37,756 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:38,113 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:38,114 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i [2023-11-21 20:59:38,134 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/ae8e18879/9d9b2f7ec58f4148a8fc837f4605579b/FLAG65ef8717e [2023-11-21 20:59:38,152 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/ae8e18879/9d9b2f7ec58f4148a8fc837f4605579b [2023-11-21 20:59:38,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:38,157 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:38,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:38,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:38,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:38,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f46067a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38, skipping insertion in model container [2023-11-21 20:59:38,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:38,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:38,705 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:38,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:38,806 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:38,806 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 20:59:38,814 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:38,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38 WrapperNode [2023-11-21 20:59:38,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:38,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:38,817 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:38,817 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:38,826 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,908 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-21 20:59:38,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:38,910 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:38,910 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:38,910 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:38,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,928 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,941 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,950 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:38,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:38,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:38,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:38,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (1/1) ... [2023-11-21 20:59:38,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:39,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:39,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:39,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 20:59:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 20:59:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:59:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:39,080 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 20:59:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 20:59:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 20:59:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 20:59:39,081 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 20:59:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 20:59:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 20:59:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 20:59:39,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:39,086 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 20:59:39,295 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:39,297 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:39,691 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:40,040 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:40,040 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 20:59:40,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:40 BoogieIcfgContainer [2023-11-21 20:59:40,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:40,044 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:40,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:40,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:40,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:38" (1/3) ... [2023-11-21 20:59:40,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:40, skipping insertion in model container [2023-11-21 20:59:40,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:38" (2/3) ... [2023-11-21 20:59:40,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ef79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:40, skipping insertion in model container [2023-11-21 20:59:40,051 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:40" (3/3) ... [2023-11-21 20:59:40,052 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019_tso.oepc.i [2023-11-21 20:59:40,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:40,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-21 20:59:40,078 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 20:59:40,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 20:59:40,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 120 flow [2023-11-21 20:59:40,241 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-21 20:59:40,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:59:40,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-21 20:59:40,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 54 transitions, 120 flow [2023-11-21 20:59:40,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 51 transitions, 111 flow [2023-11-21 20:59:40,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:40,290 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;@b47e98f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:40,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 20:59:40,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 20:59:40,295 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 20:59:40,296 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 20:59:40,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:40,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 20:59:40,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:40,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:40,304 INFO L85 PathProgramCache]: Analyzing trace with hash 12430, now seen corresponding path program 1 times [2023-11-21 20:59:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:40,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550729534] [2023-11-21 20:59:40,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:40,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:40,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:40,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:40,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550729534] [2023-11-21 20:59:40,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550729534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:40,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:40,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:59:40,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674395975] [2023-11-21 20:59:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:40,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:40,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:40,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:40,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:40,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:40,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:40,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:40,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:40,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:41,413 INFO L124 PetriNetUnfolderBase]: 868/1679 cut-off events. [2023-11-21 20:59:41,413 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 20:59:41,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 1679 events. 868/1679 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11479 event pairs, 676 based on Foata normal form. 90/1577 useless extension candidates. Maximal degree in co-relation 3019. Up to 1029 conditions per place. [2023-11-21 20:59:41,437 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 29 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-21 20:59:41,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 181 flow [2023-11-21 20:59:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:41,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 20:59:41,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 20:59:41,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 20:59:41,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 20:59:41,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:41,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 20:59:41,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,471 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 111 flow. Second operand 3 states and 115 transitions. [2023-11-21 20:59:41,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 181 flow [2023-11-21 20:59:41,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 20:59:41,486 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 104 flow [2023-11-21 20:59:41,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-21 20:59:41,493 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-21 20:59:41,494 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 104 flow [2023-11-21 20:59:41,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:41,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 20:59:41,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:59:41,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:41,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:41,497 INFO L85 PathProgramCache]: Analyzing trace with hash 12431, now seen corresponding path program 1 times [2023-11-21 20:59:41,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:41,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116656109] [2023-11-21 20:59:41,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:41,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:41,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116656109] [2023-11-21 20:59:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116656109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:59:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825914140] [2023-11-21 20:59:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:41,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 20:59:41,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:41,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 20:59:41,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:42,094 INFO L124 PetriNetUnfolderBase]: 868/1678 cut-off events. [2023-11-21 20:59:42,095 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 20:59:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1678 events. 868/1678 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11533 event pairs, 676 based on Foata normal form. 1/1487 useless extension candidates. Maximal degree in co-relation 3064. Up to 1028 conditions per place. [2023-11-21 20:59:42,113 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-21 20:59:42,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 178 flow [2023-11-21 20:59:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 20:59:42,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 20:59:42,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 20:59:42,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 20:59:42,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:42,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 20:59:42,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,124 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 104 flow. Second operand 3 states and 115 transitions. [2023-11-21 20:59:42,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 178 flow [2023-11-21 20:59:42,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:42,129 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-21 20:59:42,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-21 20:59:42,131 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-21 20:59:42,131 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-21 20:59:42,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:42,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 20:59:42,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:59:42,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:42,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 370681716, now seen corresponding path program 1 times [2023-11-21 20:59:42,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:42,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036616651] [2023-11-21 20:59:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:42,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036616651] [2023-11-21 20:59:42,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036616651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:42,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:42,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046447909] [2023-11-21 20:59:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:42,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:42,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:42,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:42,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:42,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:42,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:42,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:42,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:42,600 INFO L124 PetriNetUnfolderBase]: 870/1661 cut-off events. [2023-11-21 20:59:42,601 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 20:59:42,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3063 conditions, 1661 events. 870/1661 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11348 event pairs, 691 based on Foata normal form. 0/1475 useless extension candidates. Maximal degree in co-relation 3052. Up to 1029 conditions per place. [2023-11-21 20:59:42,616 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 29 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-21 20:59:42,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 178 flow [2023-11-21 20:59:42,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-21 20:59:42,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2023-11-21 20:59:42,618 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-21 20:59:42,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-21 20:59:42,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:42,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-21 20:59:42,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,621 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,621 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 113 transitions. [2023-11-21 20:59:42,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 178 flow [2023-11-21 20:59:42,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:42,625 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-21 20:59:42,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-21 20:59:42,626 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2023-11-21 20:59:42,627 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-21 20:59:42,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:42,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 20:59:42,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 20:59:42,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:42,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash 370681717, now seen corresponding path program 1 times [2023-11-21 20:59:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:42,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414483445] [2023-11-21 20:59:42,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:42,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:42,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:42,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414483445] [2023-11-21 20:59:42,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414483445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:42,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:42,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:42,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161027171] [2023-11-21 20:59:42,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:42,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:42,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:42,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:42,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:42,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 20:59:42,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:42,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:42,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 20:59:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:43,116 INFO L124 PetriNetUnfolderBase]: 868/1672 cut-off events. [2023-11-21 20:59:43,117 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-21 20:59:43,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3071 conditions, 1672 events. 868/1672 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11505 event pairs, 504 based on Foata normal form. 3/1491 useless extension candidates. Maximal degree in co-relation 3061. Up to 1024 conditions per place. [2023-11-21 20:59:43,136 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-21 20:59:43,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 174 flow [2023-11-21 20:59:43,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:43,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 20:59:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 20:59:43,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 20:59:43,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 20:59:43,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:43,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 20:59:43,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,145 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,146 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 115 transitions. [2023-11-21 20:59:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 174 flow [2023-11-21 20:59:43,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:43,150 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-21 20:59:43,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-21 20:59:43,153 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-11-21 20:59:43,153 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-21 20:59:43,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:43,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:43,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 20:59:43,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:43,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:43,155 INFO L85 PathProgramCache]: Analyzing trace with hash 618462122, now seen corresponding path program 1 times [2023-11-21 20:59:43,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043723090] [2023-11-21 20:59:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:43,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:43,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:43,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043723090] [2023-11-21 20:59:43,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043723090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:43,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:43,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 20:59:43,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679093221] [2023-11-21 20:59:43,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:43,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:43,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:43,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2023-11-21 20:59:43,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:43,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2023-11-21 20:59:43,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:43,746 INFO L124 PetriNetUnfolderBase]: 678/1287 cut-off events. [2023-11-21 20:59:43,746 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-21 20:59:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 1287 events. 678/1287 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8385 event pairs, 108 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 2384. Up to 832 conditions per place. [2023-11-21 20:59:43,756 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 31 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2023-11-21 20:59:43,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 198 flow [2023-11-21 20:59:43,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:43,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-21 20:59:43,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-21 20:59:43,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-21 20:59:43,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-21 20:59:43,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:43,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-21 20:59:43,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,772 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,773 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 123 transitions. [2023-11-21 20:59:43,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 198 flow [2023-11-21 20:59:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:43,776 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 94 flow [2023-11-21 20:59:43,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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=94, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-21 20:59:43,779 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-21 20:59:43,779 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 94 flow [2023-11-21 20:59:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:43,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:43,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 20:59:43,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:43,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash 618460837, now seen corresponding path program 1 times [2023-11-21 20:59:43,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:43,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410637533] [2023-11-21 20:59:43,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:43,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:43,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410637533] [2023-11-21 20:59:43,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410637533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:43,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:43,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024365621] [2023-11-21 20:59:43,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:43,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:43,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:43,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:43,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:43,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:43,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:43,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:43,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:43,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:44,118 INFO L124 PetriNetUnfolderBase]: 620/1220 cut-off events. [2023-11-21 20:59:44,119 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-11-21 20:59:44,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1220 events. 620/1220 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7911 event pairs, 205 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 2277. Up to 811 conditions per place. [2023-11-21 20:59:44,132 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 26 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-21 20:59:44,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 164 flow [2023-11-21 20:59:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-21 20:59:44,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2023-11-21 20:59:44,134 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-21 20:59:44,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-21 20:59:44,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:44,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-21 20:59:44,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,137 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 94 flow. Second operand 3 states and 110 transitions. [2023-11-21 20:59:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 164 flow [2023-11-21 20:59:44,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:44,140 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-21 20:59:44,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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} [2023-11-21 20:59:44,141 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-11-21 20:59:44,141 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-21 20:59:44,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:44,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:44,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 20:59:44,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:44,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:44,143 INFO L85 PathProgramCache]: Analyzing trace with hash 618460838, now seen corresponding path program 1 times [2023-11-21 20:59:44,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:44,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509745292] [2023-11-21 20:59:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:44,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509745292] [2023-11-21 20:59:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509745292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:44,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:44,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630521647] [2023-11-21 20:59:44,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:44,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:44,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:44,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 20:59:44,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:44,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 20:59:44,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:44,551 INFO L124 PetriNetUnfolderBase]: 603/1158 cut-off events. [2023-11-21 20:59:44,552 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 20:59:44,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 1158 events. 603/1158 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7570 event pairs, 313 based on Foata normal form. 12/1125 useless extension candidates. Maximal degree in co-relation 2153. Up to 782 conditions per place. [2023-11-21 20:59:44,562 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 25 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-21 20:59:44,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 158 flow [2023-11-21 20:59:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:44,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 20:59:44,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-21 20:59:44,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2023-11-21 20:59:44,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-21 20:59:44,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-21 20:59:44,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:44,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-21 20:59:44,566 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) [2023-11-21 20:59:44,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,567 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,567 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 112 transitions. [2023-11-21 20:59:44,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 158 flow [2023-11-21 20:59:44,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 154 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:44,569 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-21 20:59:44,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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} [2023-11-21 20:59:44,570 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-11-21 20:59:44,571 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-21 20:59:44,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:44,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:44,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:44,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 20:59:44,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:44,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1954300940, now seen corresponding path program 1 times [2023-11-21 20:59:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388963813] [2023-11-21 20:59:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:45,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:45,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:45,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388963813] [2023-11-21 20:59:45,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388963813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:45,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:45,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:45,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578623766] [2023-11-21 20:59:45,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:45,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:45,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:45,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:45,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 54 [2023-11-21 20:59:45,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:45,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:45,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 54 [2023-11-21 20:59:45,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:45,643 INFO L124 PetriNetUnfolderBase]: 605/1133 cut-off events. [2023-11-21 20:59:45,643 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 20:59:45,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1133 events. 605/1133 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7249 event pairs, 270 based on Foata normal form. 36/1125 useless extension candidates. Maximal degree in co-relation 2133. Up to 782 conditions per place. [2023-11-21 20:59:45,653 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 25 selfloop transitions, 3 changer transitions 8/53 dead transitions. [2023-11-21 20:59:45,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 188 flow [2023-11-21 20:59:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:59:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2023-11-21 20:59:45,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2023-11-21 20:59:45,655 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 181 transitions. [2023-11-21 20:59:45,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 181 transitions. [2023-11-21 20:59:45,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:45,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 181 transitions. [2023-11-21 20:59:45,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-11-21 20:59:45,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:45,658 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 6 states and 181 transitions. [2023-11-21 20:59:45,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 188 flow [2023-11-21 20:59:45,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 20:59:45,661 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 88 flow [2023-11-21 20:59:45,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-21 20:59:45,662 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2023-11-21 20:59:45,662 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 88 flow [2023-11-21 20:59:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.875) internal successors, (207), 8 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:45,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:45,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:45,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 20:59:45,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:45,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:45,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1954299720, now seen corresponding path program 1 times [2023-11-21 20:59:45,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:45,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983232094] [2023-11-21 20:59:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:45,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:46,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:46,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983232094] [2023-11-21 20:59:46,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983232094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:46,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:46,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:46,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419024920] [2023-11-21 20:59:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:46,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:46,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:46,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:46,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 20:59:46,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:46,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:46,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 20:59:46,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:47,070 INFO L124 PetriNetUnfolderBase]: 1636/2716 cut-off events. [2023-11-21 20:59:47,071 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-21 20:59:47,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5214 conditions, 2716 events. 1636/2716 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17058 event pairs, 257 based on Foata normal form. 0/2635 useless extension candidates. Maximal degree in co-relation 5203. Up to 1352 conditions per place. [2023-11-21 20:59:47,092 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 29 selfloop transitions, 2 changer transitions 47/93 dead transitions. [2023-11-21 20:59:47,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 354 flow [2023-11-21 20:59:47,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:47,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2023-11-21 20:59:47,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2023-11-21 20:59:47,095 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 280 transitions. [2023-11-21 20:59:47,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 280 transitions. [2023-11-21 20:59:47,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:47,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 280 transitions. [2023-11-21 20:59:47,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.0) internal successors, (280), 8 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:47,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:47,099 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:47,099 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 8 states and 280 transitions. [2023-11-21 20:59:47,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 354 flow [2023-11-21 20:59:47,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 349 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 20:59:47,102 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 97 flow [2023-11-21 20:59:47,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=8, PETRI_FLOW=97, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2023-11-21 20:59:47,104 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-11-21 20:59:47,104 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 97 flow [2023-11-21 20:59:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.0) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:47,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:47,105 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] [2023-11-21 20:59:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 20:59:47,105 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:47,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:47,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1563558235, now seen corresponding path program 1 times [2023-11-21 20:59:47,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371140911] [2023-11-21 20:59:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:47,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:47,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:47,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371140911] [2023-11-21 20:59:47,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371140911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:47,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:47,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552700660] [2023-11-21 20:59:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:47,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:47,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:47,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:47,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:47,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:47,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:47,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:48,139 INFO L124 PetriNetUnfolderBase]: 874/1565 cut-off events. [2023-11-21 20:59:48,139 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-11-21 20:59:48,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 1565 events. 874/1565 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9603 event pairs, 510 based on Foata normal form. 48/1588 useless extension candidates. Maximal degree in co-relation 3280. Up to 1057 conditions per place. [2023-11-21 20:59:48,152 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 30 selfloop transitions, 7 changer transitions 27/81 dead transitions. [2023-11-21 20:59:48,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 81 transitions, 328 flow [2023-11-21 20:59:48,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:48,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2023-11-21 20:59:48,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2023-11-21 20:59:48,155 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 282 transitions. [2023-11-21 20:59:48,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 282 transitions. [2023-11-21 20:59:48,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:48,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 282 transitions. [2023-11-21 20:59:48,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.25) internal successors, (282), 8 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:48,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:48,159 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:48,159 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 97 flow. Second operand 8 states and 282 transitions. [2023-11-21 20:59:48,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 81 transitions, 328 flow [2023-11-21 20:59:48,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 308 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-21 20:59:48,174 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 138 flow [2023-11-21 20:59:48,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=138, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-11-21 20:59:48,175 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-11-21 20:59:48,175 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 138 flow [2023-11-21 20:59:48,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:48,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:48,176 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] [2023-11-21 20:59:48,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 20:59:48,176 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:48,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:48,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1136172093, now seen corresponding path program 1 times [2023-11-21 20:59:48,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:48,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41870296] [2023-11-21 20:59:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:48,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41870296] [2023-11-21 20:59:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41870296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:48,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:48,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:48,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230824353] [2023-11-21 20:59:48,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:48,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:48,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:48,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:48,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:48,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:48,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:48,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:48,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:49,319 INFO L124 PetriNetUnfolderBase]: 817/1477 cut-off events. [2023-11-21 20:59:49,320 INFO L125 PetriNetUnfolderBase]: For 620/648 co-relation queries the response was YES. [2023-11-21 20:59:49,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3535 conditions, 1477 events. 817/1477 cut-off events. For 620/648 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8856 event pairs, 498 based on Foata normal form. 37/1501 useless extension candidates. Maximal degree in co-relation 3517. Up to 1048 conditions per place. [2023-11-21 20:59:49,334 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 31 selfloop transitions, 7 changer transitions 23/78 dead transitions. [2023-11-21 20:59:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 78 transitions, 375 flow [2023-11-21 20:59:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 20:59:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2023-11-21 20:59:49,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2023-11-21 20:59:49,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 245 transitions. [2023-11-21 20:59:49,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 245 transitions. [2023-11-21 20:59:49,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:49,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 245 transitions. [2023-11-21 20:59:49,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:49,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:49,341 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:49,341 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 138 flow. Second operand 7 states and 245 transitions. [2023-11-21 20:59:49,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 78 transitions, 375 flow [2023-11-21 20:59:49,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 78 transitions, 359 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-21 20:59:49,355 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 196 flow [2023-11-21 20:59:49,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-11-21 20:59:49,356 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-11-21 20:59:49,356 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 196 flow [2023-11-21 20:59:49,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:49,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:49,357 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] [2023-11-21 20:59:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 20:59:49,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:49,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash 938998385, now seen corresponding path program 1 times [2023-11-21 20:59:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938782493] [2023-11-21 20:59:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:49,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:49,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938782493] [2023-11-21 20:59:49,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938782493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:49,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:49,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:49,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29108096] [2023-11-21 20:59:49,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:49,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:49,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:49,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:49,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:49,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:49,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:49,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:50,511 INFO L124 PetriNetUnfolderBase]: 836/1535 cut-off events. [2023-11-21 20:59:50,511 INFO L125 PetriNetUnfolderBase]: For 2330/2438 co-relation queries the response was YES. [2023-11-21 20:59:50,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4585 conditions, 1535 events. 836/1535 cut-off events. For 2330/2438 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9141 event pairs, 284 based on Foata normal form. 42/1547 useless extension candidates. Maximal degree in co-relation 4564. Up to 876 conditions per place. [2023-11-21 20:59:50,527 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 44 selfloop transitions, 10 changer transitions 34/105 dead transitions. [2023-11-21 20:59:50,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 105 transitions, 623 flow [2023-11-21 20:59:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 20:59:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 20:59:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 351 transitions. [2023-11-21 20:59:50,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-21 20:59:50,530 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 351 transitions. [2023-11-21 20:59:50,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 351 transitions. [2023-11-21 20:59:50,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:50,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 351 transitions. [2023-11-21 20:59:50,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 35.1) internal successors, (351), 10 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:50,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:50,534 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:50,534 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 196 flow. Second operand 10 states and 351 transitions. [2023-11-21 20:59:50,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 105 transitions, 623 flow [2023-11-21 20:59:50,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 105 transitions, 601 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-21 20:59:50,544 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 253 flow [2023-11-21 20:59:50,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=253, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-11-21 20:59:50,545 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-11-21 20:59:50,546 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 253 flow [2023-11-21 20:59:50,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:50,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:50,546 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] [2023-11-21 20:59:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 20:59:50,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:50,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash 655200579, now seen corresponding path program 1 times [2023-11-21 20:59:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:50,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862814716] [2023-11-21 20:59:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:50,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:51,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862814716] [2023-11-21 20:59:51,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862814716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:51,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:51,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:59:51,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805333977] [2023-11-21 20:59:51,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:51,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 20:59:51,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:51,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 20:59:51,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 20:59:51,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:51,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 28.75) internal successors, (230), 8 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:51,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:51,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:51,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:51,816 INFO L124 PetriNetUnfolderBase]: 766/1382 cut-off events. [2023-11-21 20:59:51,817 INFO L125 PetriNetUnfolderBase]: For 4859/5025 co-relation queries the response was YES. [2023-11-21 20:59:51,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5162 conditions, 1382 events. 766/1382 cut-off events. For 4859/5025 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8041 event pairs, 263 based on Foata normal form. 39/1389 useless extension candidates. Maximal degree in co-relation 5135. Up to 855 conditions per place. [2023-11-21 20:59:51,832 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 42 selfloop transitions, 12 changer transitions 25/96 dead transitions. [2023-11-21 20:59:51,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 96 transitions, 682 flow [2023-11-21 20:59:51,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2023-11-21 20:59:51,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2023-11-21 20:59:51,835 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 284 transitions. [2023-11-21 20:59:51,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 284 transitions. [2023-11-21 20:59:51,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:51,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 284 transitions. [2023-11-21 20:59:51,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.5) internal successors, (284), 8 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:51,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:51,838 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:51,838 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 253 flow. Second operand 8 states and 284 transitions. [2023-11-21 20:59:51,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 96 transitions, 682 flow [2023-11-21 20:59:51,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 642 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-21 20:59:51,853 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 310 flow [2023-11-21 20:59:51,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=310, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2023-11-21 20:59:51,854 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-11-21 20:59:51,854 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 310 flow [2023-11-21 20:59:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 28.75) internal successors, (230), 8 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:51,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:51,855 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] [2023-11-21 20:59:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 20:59:51,855 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:51,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash -529573834, now seen corresponding path program 1 times [2023-11-21 20:59:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952637832] [2023-11-21 20:59:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:52,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:52,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:52,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952637832] [2023-11-21 20:59:52,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952637832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:52,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:52,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:52,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934317516] [2023-11-21 20:59:52,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:52,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 20:59:52,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 20:59:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 20:59:52,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 20:59:52,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:52,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:52,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 20:59:52,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:52,493 INFO L124 PetriNetUnfolderBase]: 1525/2521 cut-off events. [2023-11-21 20:59:52,494 INFO L125 PetriNetUnfolderBase]: For 8041/8096 co-relation queries the response was YES. [2023-11-21 20:59:52,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8665 conditions, 2521 events. 1525/2521 cut-off events. For 8041/8096 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14337 event pairs, 145 based on Foata normal form. 148/2594 useless extension candidates. Maximal degree in co-relation 8635. Up to 1379 conditions per place. [2023-11-21 20:59:52,522 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 58 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-11-21 20:59:52,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 80 transitions, 572 flow [2023-11-21 20:59:52,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 20:59:52,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 20:59:52,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-21 20:59:52,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6851851851851852 [2023-11-21 20:59:52,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-21 20:59:52,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-21 20:59:52,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:52,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-21 20:59:52,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:52,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:52,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:52,527 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 310 flow. Second operand 4 states and 148 transitions. [2023-11-21 20:59:52,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 80 transitions, 572 flow [2023-11-21 20:59:52,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 539 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-21 20:59:52,577 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 294 flow [2023-11-21 20:59:52,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-21 20:59:52,579 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-11-21 20:59:52,579 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 294 flow [2023-11-21 20:59:52,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:52,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:52,580 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] [2023-11-21 20:59:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 20:59:52,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:52,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash -480476156, now seen corresponding path program 1 times [2023-11-21 20:59:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:52,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468424162] [2023-11-21 20:59:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:52,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:52,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468424162] [2023-11-21 20:59:52,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468424162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:52,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:52,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:52,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342383923] [2023-11-21 20:59:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:52,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:52,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:52,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 20:59:52,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 294 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) [2023-11-21 20:59:52,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:52,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 20:59:52,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:53,192 INFO L124 PetriNetUnfolderBase]: 1117/1905 cut-off events. [2023-11-21 20:59:53,192 INFO L125 PetriNetUnfolderBase]: For 5642/5686 co-relation queries the response was YES. [2023-11-21 20:59:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6584 conditions, 1905 events. 1117/1905 cut-off events. For 5642/5686 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10250 event pairs, 124 based on Foata normal form. 122/1951 useless extension candidates. Maximal degree in co-relation 6556. Up to 637 conditions per place. [2023-11-21 20:59:53,209 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 63 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2023-11-21 20:59:53,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 88 transitions, 621 flow [2023-11-21 20:59:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 20:59:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2023-11-21 20:59:53,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6925925925925925 [2023-11-21 20:59:53,211 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 187 transitions. [2023-11-21 20:59:53,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 187 transitions. [2023-11-21 20:59:53,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:53,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 187 transitions. [2023-11-21 20:59:53,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.4) internal successors, (187), 5 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) [2023-11-21 20:59:53,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,213 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,214 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 294 flow. Second operand 5 states and 187 transitions. [2023-11-21 20:59:53,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 88 transitions, 621 flow [2023-11-21 20:59:53,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 589 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-21 20:59:53,221 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 307 flow [2023-11-21 20:59:53,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=307, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2023-11-21 20:59:53,222 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2023-11-21 20:59:53,222 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 307 flow [2023-11-21 20:59:53,222 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) [2023-11-21 20:59:53,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:53,223 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] [2023-11-21 20:59:53,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 20:59:53,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:53,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:53,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1595874854, now seen corresponding path program 1 times [2023-11-21 20:59:53,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:53,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367901014] [2023-11-21 20:59:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:53,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:53,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367901014] [2023-11-21 20:59:53,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367901014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:53,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:53,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:53,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620254828] [2023-11-21 20:59:53,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:53,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:53,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:53,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:53,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 20:59:53,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 307 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) [2023-11-21 20:59:53,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:53,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 20:59:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:53,777 INFO L124 PetriNetUnfolderBase]: 830/1422 cut-off events. [2023-11-21 20:59:53,778 INFO L125 PetriNetUnfolderBase]: For 5480/5505 co-relation queries the response was YES. [2023-11-21 20:59:53,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5339 conditions, 1422 events. 830/1422 cut-off events. For 5480/5505 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7337 event pairs, 94 based on Foata normal form. 61/1406 useless extension candidates. Maximal degree in co-relation 5310. Up to 483 conditions per place. [2023-11-21 20:59:53,790 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 58 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-11-21 20:59:53,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 588 flow [2023-11-21 20:59:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:59:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2023-11-21 20:59:53,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2023-11-21 20:59:53,792 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 210 transitions. [2023-11-21 20:59:53,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 210 transitions. [2023-11-21 20:59:53,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:53,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 210 transitions. [2023-11-21 20:59:53,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,795 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 307 flow. Second operand 6 states and 210 transitions. [2023-11-21 20:59:53,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 588 flow [2023-11-21 20:59:53,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 543 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-21 20:59:53,804 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 311 flow [2023-11-21 20:59:53,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-11-21 20:59:53,805 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2023-11-21 20:59:53,805 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 311 flow [2023-11-21 20:59:53,805 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) [2023-11-21 20:59:53,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:53,806 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, 1, 1, 1, 1, 1] [2023-11-21 20:59:53,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 20:59:53,806 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:53,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:53,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1732068899, now seen corresponding path program 1 times [2023-11-21 20:59:53,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:53,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873928555] [2023-11-21 20:59:53,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:53,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:54,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:54,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873928555] [2023-11-21 20:59:54,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873928555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:54,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:54,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 20:59:54,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340636810] [2023-11-21 20:59:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:54,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 20:59:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 20:59:54,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:54,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 54 [2023-11-21 20:59:54,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:54,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:54,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 54 [2023-11-21 20:59:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:55,207 INFO L124 PetriNetUnfolderBase]: 1266/2356 cut-off events. [2023-11-21 20:59:55,207 INFO L125 PetriNetUnfolderBase]: For 7028/7493 co-relation queries the response was YES. [2023-11-21 20:59:55,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7638 conditions, 2356 events. 1266/2356 cut-off events. For 7028/7493 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14925 event pairs, 312 based on Foata normal form. 68/2229 useless extension candidates. Maximal degree in co-relation 7609. Up to 1009 conditions per place. [2023-11-21 20:59:55,228 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 43 selfloop transitions, 4 changer transitions 43/116 dead transitions. [2023-11-21 20:59:55,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 740 flow [2023-11-21 20:59:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2023-11-21 20:59:55,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064814814814815 [2023-11-21 20:59:55,231 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 262 transitions. [2023-11-21 20:59:55,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 262 transitions. [2023-11-21 20:59:55,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:55,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 262 transitions. [2023-11-21 20:59:55,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 32.75) internal successors, (262), 8 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:55,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:55,235 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:55,236 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 311 flow. Second operand 8 states and 262 transitions. [2023-11-21 20:59:55,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 740 flow [2023-11-21 20:59:55,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 116 transitions, 662 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-11-21 20:59:55,268 INFO L231 Difference]: Finished difference. Result has 79 places, 59 transitions, 305 flow [2023-11-21 20:59:55,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=305, PETRI_PLACES=79, PETRI_TRANSITIONS=59} [2023-11-21 20:59:55,269 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2023-11-21 20:59:55,269 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 59 transitions, 305 flow [2023-11-21 20:59:55,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:55,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:55,270 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, 1, 1, 1, 1, 1] [2023-11-21 20:59:55,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 20:59:55,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:55,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:55,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1949556601, now seen corresponding path program 2 times [2023-11-21 20:59:55,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:55,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897423165] [2023-11-21 20:59:55,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:55,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897423165] [2023-11-21 20:59:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897423165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:55,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:55,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 20:59:55,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595999456] [2023-11-21 20:59:55,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:55,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:55,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:55,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:55,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:55,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 54 [2023-11-21 20:59:55,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 59 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:55,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:55,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 54 [2023-11-21 20:59:55,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:56,101 INFO L124 PetriNetUnfolderBase]: 916/1961 cut-off events. [2023-11-21 20:59:56,103 INFO L125 PetriNetUnfolderBase]: For 2326/2461 co-relation queries the response was YES. [2023-11-21 20:59:56,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5516 conditions, 1961 events. 916/1961 cut-off events. For 2326/2461 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13708 event pairs, 294 based on Foata normal form. 36/1832 useless extension candidates. Maximal degree in co-relation 5485. Up to 683 conditions per place. [2023-11-21 20:59:56,113 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 26 selfloop transitions, 1 changer transitions 33/86 dead transitions. [2023-11-21 20:59:56,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 516 flow [2023-11-21 20:59:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 20:59:56,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 20:59:56,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2023-11-21 20:59:56,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6234567901234568 [2023-11-21 20:59:56,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 202 transitions. [2023-11-21 20:59:56,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 202 transitions. [2023-11-21 20:59:56,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:56,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 202 transitions. [2023-11-21 20:59:56,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:56,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:56,118 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:56,119 INFO L175 Difference]: Start difference. First operand has 79 places, 59 transitions, 305 flow. Second operand 6 states and 202 transitions. [2023-11-21 20:59:56,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 516 flow [2023-11-21 20:59:56,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 498 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-21 20:59:56,140 INFO L231 Difference]: Finished difference. Result has 80 places, 49 transitions, 241 flow [2023-11-21 20:59:56,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=80, PETRI_TRANSITIONS=49} [2023-11-21 20:59:56,141 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-11-21 20:59:56,141 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 49 transitions, 241 flow [2023-11-21 20:59:56,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:56,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:56,142 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, 1, 1, 1, 1, 1] [2023-11-21 20:59:56,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 20:59:56,142 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:56,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:56,143 INFO L85 PathProgramCache]: Analyzing trace with hash -889075965, now seen corresponding path program 3 times [2023-11-21 20:59:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:56,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524337503] [2023-11-21 20:59:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:56,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:57,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:57,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524337503] [2023-11-21 20:59:57,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524337503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:57,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:57,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 20:59:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023154575] [2023-11-21 20:59:57,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 20:59:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 20:59:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-21 20:59:57,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 20:59:57,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 49 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:57,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 20:59:57,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 20:59:57,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 20:59:58,454 INFO L124 PetriNetUnfolderBase]: 883/1914 cut-off events. [2023-11-21 20:59:58,455 INFO L125 PetriNetUnfolderBase]: For 2178/2348 co-relation queries the response was YES. [2023-11-21 20:59:58,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 1914 events. 883/1914 cut-off events. For 2178/2348 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13092 event pairs, 410 based on Foata normal form. 36/1787 useless extension candidates. Maximal degree in co-relation 5369. Up to 533 conditions per place. [2023-11-21 20:59:58,469 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 33 selfloop transitions, 7 changer transitions 24/90 dead transitions. [2023-11-21 20:59:58,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 521 flow [2023-11-21 20:59:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 20:59:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 20:59:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2023-11-21 20:59:58,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6504629629629629 [2023-11-21 20:59:58,471 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 281 transitions. [2023-11-21 20:59:58,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 281 transitions. [2023-11-21 20:59:58,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 20:59:58,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 281 transitions. [2023-11-21 20:59:58,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 35.125) internal successors, (281), 8 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:58,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:58,475 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:58,476 INFO L175 Difference]: Start difference. First operand has 80 places, 49 transitions, 241 flow. Second operand 8 states and 281 transitions. [2023-11-21 20:59:58,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 521 flow [2023-11-21 20:59:58,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 486 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-11-21 20:59:58,497 INFO L231 Difference]: Finished difference. Result has 78 places, 51 transitions, 263 flow [2023-11-21 20:59:58,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=78, PETRI_TRANSITIONS=51} [2023-11-21 20:59:58,498 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 19 predicate places. [2023-11-21 20:59:58,498 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 51 transitions, 263 flow [2023-11-21 20:59:58,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 28.545454545454547) internal successors, (314), 11 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:58,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 20:59:58,499 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, 1, 1, 1, 1, 1] [2023-11-21 20:59:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 20:59:58,499 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 20:59:58,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash 952565587, now seen corresponding path program 4 times [2023-11-21 20:59:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068389859] [2023-11-21 20:59:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:58,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:58,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:58,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:58,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:59:58,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (12 of 13 remaining) [2023-11-21 20:59:58,656 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (11 of 13 remaining) [2023-11-21 20:59:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 13 remaining) [2023-11-21 20:59:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 13 remaining) [2023-11-21 20:59:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 13 remaining) [2023-11-21 20:59:58,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 13 remaining) [2023-11-21 20:59:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 13 remaining) [2023-11-21 20:59:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 13 remaining) [2023-11-21 20:59:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 13 remaining) [2023-11-21 20:59:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 13 remaining) [2023-11-21 20:59:58,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 13 remaining) [2023-11-21 20:59:58,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 13 remaining) [2023-11-21 20:59:58,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 13 remaining) [2023-11-21 20:59:58,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-21 20:59:58,659 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:58,666 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 20:59:58,666 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 20:59:58,748 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated [2023-11-21 20:59:58,750 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-21 20:59:58,753 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-21 20:59:58,776 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-21 20:59:58,785 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~nondet0 [2023-11-21 20:59:58,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 08:59:58 BasicIcfg [2023-11-21 20:59:58,805 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 20:59:58,805 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:59:58,805 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:59:58,806 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:59:58,806 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:40" (3/4) ... [2023-11-21 20:59:58,807 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 20:59:58,809 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:59:58,809 INFO L158 Benchmark]: Toolchain (without parser) took 20652.46ms. Allocated memory was 151.0MB in the beginning and 423.6MB in the end (delta: 272.6MB). Free memory was 103.6MB in the beginning and 256.5MB in the end (delta: -152.9MB). Peak memory consumption was 121.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,810 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:58,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.21ms. Allocated memory is still 151.0MB. Free memory was 103.3MB in the beginning and 79.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.21ms. Allocated memory was 151.0MB in the beginning and 197.1MB in the end (delta: 46.1MB). Free memory was 79.7MB in the beginning and 165.8MB in the end (delta: -86.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,811 INFO L158 Benchmark]: Boogie Preprocessor took 70.92ms. Allocated memory is still 197.1MB. Free memory was 165.8MB in the beginning and 165.1MB in the end (delta: 681.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,812 INFO L158 Benchmark]: RCFGBuilder took 1060.77ms. Allocated memory is still 197.1MB. Free memory was 165.1MB in the beginning and 115.6MB in the end (delta: 49.5MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,812 INFO L158 Benchmark]: TraceAbstraction took 18760.57ms. Allocated memory was 197.1MB in the beginning and 423.6MB in the end (delta: 226.5MB). Free memory was 114.8MB in the beginning and 256.5MB in the end (delta: -141.7MB). Peak memory consumption was 84.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:58,813 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 423.6MB. Free memory is still 256.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:58,815 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 151.0MB. Free memory is still 95.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.21ms. Allocated memory is still 151.0MB. Free memory was 103.3MB in the beginning and 79.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.21ms. Allocated memory was 151.0MB in the beginning and 197.1MB in the end (delta: 46.1MB). Free memory was 79.7MB in the beginning and 165.8MB in the end (delta: -86.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.92ms. Allocated memory is still 197.1MB. Free memory was 165.8MB in the beginning and 165.1MB in the end (delta: 681.1kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1060.77ms. Allocated memory is still 197.1MB. Free memory was 165.1MB in the beginning and 115.6MB in the end (delta: 49.5MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 18760.57ms. Allocated memory was 197.1MB in the beginning and 423.6MB in the end (delta: 226.5MB). Free memory was 114.8MB in the beginning and 256.5MB in the end (delta: -141.7MB). Peak memory consumption was 84.6MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 423.6MB. Free memory is still 256.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~nondet0 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 17. Possible FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff0_thd3; [L726] 0 _Bool x$r_buff1_thd0; [L727] 0 _Bool x$r_buff1_thd1; [L728] 0 _Bool x$r_buff1_thd2; [L729] 0 _Bool x$r_buff1_thd3; [L730] 0 _Bool x$read_delayed; [L731] 0 int *x$read_delayed_var; [L732] 0 int x$w_buff0; [L733] 0 _Bool x$w_buff0_used; [L734] 0 int x$w_buff1; [L735] 0 _Bool x$w_buff1_used; [L737] 0 int y = 0; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L825] 0 pthread_t t515; [L826] FCALL, FORK 0 pthread_create(&t515, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L827] 0 pthread_t t516; [L828] FCALL, FORK 0 pthread_create(&t516, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={6:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L829] 0 pthread_t t517; [L830] FCALL, FORK 0 pthread_create(&t517, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={6:0}, t517={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L765] 2 x$w_buff1 = x$w_buff0 [L766] 2 x$w_buff0 = 2 [L767] 2 x$w_buff1_used = x$w_buff0_used [L768] 2 x$w_buff0_used = (_Bool)1 [L769] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L769] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L770] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L771] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L772] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L773] 2 x$r_buff1_thd3 = x$r_buff0_thd3 [L774] 2 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L777] 2 __unbuffered_p1_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L794] 3 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1, z=0] [L797] 3 __unbuffered_p2_EAX = y VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1, z=0] [L800] 3 __unbuffered_p2_EBX = z VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1, z=0] [L745] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1, z=1] [L748] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1, z=1] [L780] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L781] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L782] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L783] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L784] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L751] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L752] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L753] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L754] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L755] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L787] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L758] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L803] 3 x = x$w_buff0_used && x$r_buff0_thd3 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd3 ? x$w_buff1 : x) [L804] 3 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$w_buff0_used [L805] 3 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$w_buff1_used [L806] 3 x$r_buff0_thd3 = x$w_buff0_used && x$r_buff0_thd3 ? (_Bool)0 : x$r_buff0_thd3 [L807] 3 x$r_buff1_thd3 = x$w_buff0_used && x$r_buff0_thd3 || x$w_buff1_used && x$r_buff1_thd3 ? (_Bool)0 : x$r_buff1_thd3 VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L810] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L832] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t515={5:0}, t516={6:0}, t517={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L834] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L834] RET 0 assume_abort_if_not(main$tmp_guard0) [L836] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L837] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L838] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L839] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L840] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t515={5:0}, t516={6:0}, t517={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L843] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L844] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L845] 0 x$flush_delayed = weak$$choice2 [L846] 0 x$mem_tmp = x [L847] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L848] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L849] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L850] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L851] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L852] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L853] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L854] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 1 && __unbuffered_p2_EBX == 0) [L855] 0 x = x$flush_delayed ? x$mem_tmp : x [L856] 0 x$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t515={5:0}, t516={6:0}, t517={3:0}, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L858] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] CALL 0 reach_error() [L17] COND FALSE 0 !(0) VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] [L17] 0 __assert_fail ("0", "mix019_tso.oepc.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [__unbuffered_cnt=3, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=1, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1, z=1] - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 823]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 826]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 79 locations, 13 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: 18.5s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 835 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 720 mSDsluCounter, 199 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 144 mSDsCounter, 82 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2337 IncrementalHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 82 mSolverCounterUnsat, 55 mSDtfsCounter, 2337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=311occurred in iteration=16, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 383 NumberOfCodeBlocks, 383 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 2553 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 20:59:58,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx --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 d6f4376125179246714b78f2e2f349c8b75c8c24c937ac142dcf7789f615522d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:00:01,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:00:01,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 21:00:01,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:00:01,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:00:01,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:00:01,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:00:01,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:00:01,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:00:01,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:00:01,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:00:01,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:00:01,798 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:00:01,800 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:00:01,801 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:00:01,801 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:00:01,802 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:00:01,802 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:00:01,803 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:00:01,804 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:00:01,805 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:00:01,805 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:00:01,806 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:00:01,806 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 21:00:01,807 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 21:00:01,808 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:00:01,808 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:00:01,809 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:00:01,810 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:00:01,810 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:00:01,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:00:01,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:00:01,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:01,813 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:00:01,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:00:01,814 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 21:00:01,814 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 21:00:01,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:00:01,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:00:01,816 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:00:01,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:00:01,817 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 21:00:01,817 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_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6f4376125179246714b78f2e2f349c8b75c8c24c937ac142dcf7789f615522d [2023-11-21 21:00:02,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:00:02,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:00:02,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:00:02,270 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:00:02,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:00:02,272 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i [2023-11-21 21:00:05,542 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:00:05,949 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:00:05,950 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/sv-benchmarks/c/pthread-wmm/mix019_tso.oepc.i [2023-11-21 21:00:05,988 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/57f9465ce/486aff5ff2f949bda10c31abd35bdddd/FLAG185ac1468 [2023-11-21 21:00:06,012 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/data/57f9465ce/486aff5ff2f949bda10c31abd35bdddd [2023-11-21 21:00:06,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:00:06,019 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:00:06,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:06,023 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:00:06,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:00:06,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:06,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609d63c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06, skipping insertion in model container [2023-11-21 21:00:06,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:06,111 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:00:06,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:06,685 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:00:06,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:00:06,864 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:06,866 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:00:06,889 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:00:06,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06 WrapperNode [2023-11-21 21:00:06,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:00:06,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:06,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:00:06,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:00:06,899 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:06,949 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,006 INFO L138 Inliner]: procedures = 179, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-21 21:00:07,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:00:07,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:00:07,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:00:07,013 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:00:07,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,023 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,037 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,053 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:00:07,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:00:07,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:00:07,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:00:07,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (1/1) ... [2023-11-21 21:00:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:00:07,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:00:07,121 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:00:07,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:00:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 21:00:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:00:07,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:00:07,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:00:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 21:00:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 21:00:07,172 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 21:00:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 21:00:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 21:00:07,173 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 21:00:07,173 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 21:00:07,175 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 21:00:07,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 21:00:07,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:00:07,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:00:07,178 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 21:00:07,392 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:00:07,394 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:00:07,897 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:00:08,225 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:00:08,225 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:00:08,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:08 BoogieIcfgContainer [2023-11-21 21:00:08,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:00:08,231 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:00:08,231 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:00:08,235 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:00:08,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:00:06" (1/3) ... [2023-11-21 21:00:08,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6b5a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:08, skipping insertion in model container [2023-11-21 21:00:08,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:00:06" (2/3) ... [2023-11-21 21:00:08,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d6b5a32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:00:08, skipping insertion in model container [2023-11-21 21:00:08,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:00:08" (3/3) ... [2023-11-21 21:00:08,239 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019_tso.oepc.i [2023-11-21 21:00:08,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:00:08,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-11-21 21:00:08,264 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:00:08,336 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:00:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 54 transitions, 120 flow [2023-11-21 21:00:08,431 INFO L124 PetriNetUnfolderBase]: 2/51 cut-off events. [2023-11-21 21:00:08,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:00:08,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 51 events. 2/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-21 21:00:08,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 54 transitions, 120 flow [2023-11-21 21:00:08,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 51 transitions, 111 flow [2023-11-21 21:00:08,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:00:08,473 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;@67583b82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:00:08,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-21 21:00:08,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:00:08,478 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 21:00:08,479 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:00:08,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:08,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:00:08,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:08,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:08,488 INFO L85 PathProgramCache]: Analyzing trace with hash 12494, now seen corresponding path program 1 times [2023-11-21 21:00:08,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:08,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335361629] [2023-11-21 21:00:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:08,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:08,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:08,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:08,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 21:00:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:08,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:08,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:08,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 21:00:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:08,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:08,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:08,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335361629] [2023-11-21 21:00:08,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335361629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:08,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:08,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549872779] [2023-11-21 21:00:08,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:08,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:08,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:08,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:08,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 21:00:08,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:08,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:08,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 21:00:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:09,564 INFO L124 PetriNetUnfolderBase]: 868/1679 cut-off events. [2023-11-21 21:00:09,565 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-21 21:00:09,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3033 conditions, 1679 events. 868/1679 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11479 event pairs, 676 based on Foata normal form. 90/1577 useless extension candidates. Maximal degree in co-relation 3019. Up to 1029 conditions per place. [2023-11-21 21:00:09,595 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 29 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-21 21:00:09,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 181 flow [2023-11-21 21:00:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 21:00:09,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 21:00:09,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 21:00:09,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 21:00:09,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:09,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 21:00:09,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:09,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:09,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:09,638 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 111 flow. Second operand 3 states and 115 transitions. [2023-11-21 21:00:09,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 181 flow [2023-11-21 21:00:09,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 21:00:09,655 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 104 flow [2023-11-21 21:00:09,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-21 21:00:09,662 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-21 21:00:09,663 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 104 flow [2023-11-21 21:00:09,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:09,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:09,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:00:09,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:09,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:09,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:09,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:09,868 INFO L85 PathProgramCache]: Analyzing trace with hash 12495, now seen corresponding path program 1 times [2023-11-21 21:00:09,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:09,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630208811] [2023-11-21 21:00:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:09,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:09,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:09,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:09,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 21:00:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:09,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:09,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:09,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 21:00:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:09,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:09,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:09,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630208811] [2023-11-21 21:00:09,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630208811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:09,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:09,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:09,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579478105] [2023-11-21 21:00:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:09,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:10,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 21:00:10,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:10,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 21:00:10,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:10,510 INFO L124 PetriNetUnfolderBase]: 868/1678 cut-off events. [2023-11-21 21:00:10,511 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 21:00:10,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1678 events. 868/1678 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11533 event pairs, 676 based on Foata normal form. 1/1487 useless extension candidates. Maximal degree in co-relation 3064. Up to 1028 conditions per place. [2023-11-21 21:00:10,532 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-21 21:00:10,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 178 flow [2023-11-21 21:00:10,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:10,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:10,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 21:00:10,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 21:00:10,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 21:00:10,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 21:00:10,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:10,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 21:00:10,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,549 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 104 flow. Second operand 3 states and 115 transitions. [2023-11-21 21:00:10,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 178 flow [2023-11-21 21:00:10,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:10,563 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 102 flow [2023-11-21 21:00:10,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-11-21 21:00:10,564 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2023-11-21 21:00:10,564 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 102 flow [2023-11-21 21:00:10,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:10,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:10,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:10,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:10,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:10,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash 372590326, now seen corresponding path program 1 times [2023-11-21 21:00:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:10,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870250423] [2023-11-21 21:00:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:10,770 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:10,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:10,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 21:00:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:10,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:10,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:10,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 21:00:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:10,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:10,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:10,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870250423] [2023-11-21 21:00:10,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870250423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:10,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:10,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991366200] [2023-11-21 21:00:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:10,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:10,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:10,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 21:00:10,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:10,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:10,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 21:00:10,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:11,322 INFO L124 PetriNetUnfolderBase]: 870/1677 cut-off events. [2023-11-21 21:00:11,322 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 21:00:11,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 1677 events. 870/1677 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11553 event pairs, 504 based on Foata normal form. 0/1492 useless extension candidates. Maximal degree in co-relation 3068. Up to 1029 conditions per place. [2023-11-21 21:00:11,341 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 29 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-21 21:00:11,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 178 flow [2023-11-21 21:00:11,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2023-11-21 21:00:11,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2023-11-21 21:00:11,344 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 113 transitions. [2023-11-21 21:00:11,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 113 transitions. [2023-11-21 21:00:11,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:11,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 113 transitions. [2023-11-21 21:00:11,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:11,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:11,347 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:11,348 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 102 flow. Second operand 3 states and 113 transitions. [2023-11-21 21:00:11,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 178 flow [2023-11-21 21:00:11,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 53 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:11,353 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-21 21:00:11,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-21 21:00:11,354 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2023-11-21 21:00:11,355 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-21 21:00:11,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:11,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:11,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 21:00:11,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:11,565 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:11,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:11,566 INFO L85 PathProgramCache]: Analyzing trace with hash 372590327, now seen corresponding path program 1 times [2023-11-21 21:00:11,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:11,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019120802] [2023-11-21 21:00:11,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:11,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:11,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:11,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:11,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 21:00:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:11,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:11,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:11,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 21:00:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:11,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:11,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:11,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019120802] [2023-11-21 21:00:11,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019120802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:11,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:11,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:11,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000428305] [2023-11-21 21:00:11,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:11,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:11,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:11,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 21:00:11,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:11,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:11,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 21:00:11,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:12,095 INFO L124 PetriNetUnfolderBase]: 868/1656 cut-off events. [2023-11-21 21:00:12,096 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-21 21:00:12,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3055 conditions, 1656 events. 868/1656 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11287 event pairs, 689 based on Foata normal form. 3/1476 useless extension candidates. Maximal degree in co-relation 3045. Up to 1024 conditions per place. [2023-11-21 21:00:12,116 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 28 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-11-21 21:00:12,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 174 flow [2023-11-21 21:00:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-11-21 21:00:12,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7098765432098766 [2023-11-21 21:00:12,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-11-21 21:00:12,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-11-21 21:00:12,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:12,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-11-21 21:00:12,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,133 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 115 transitions. [2023-11-21 21:00:12,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 174 flow [2023-11-21 21:00:12,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 52 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:12,140 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-21 21:00:12,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-21 21:00:12,142 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -6 predicate places. [2023-11-21 21:00:12,142 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-21 21:00:12,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:12,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:12,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:12,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:12,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:12,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:12,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1643289770, now seen corresponding path program 1 times [2023-11-21 21:00:12,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:12,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518742632] [2023-11-21 21:00:12,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:12,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:12,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 21:00:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:12,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:00:12,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:12,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:12,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:12,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:12,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518742632] [2023-11-21 21:00:12,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518742632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:12,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:12,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:00:12,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193771540] [2023-11-21 21:00:12,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:12,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:12,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:12,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:12,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:12,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 54 [2023-11-21 21:00:12,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:12,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 54 [2023-11-21 21:00:12,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:12,853 INFO L124 PetriNetUnfolderBase]: 678/1260 cut-off events. [2023-11-21 21:00:12,854 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-21 21:00:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2367 conditions, 1260 events. 678/1260 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7816 event pairs, 216 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 2357. Up to 832 conditions per place. [2023-11-21 21:00:12,866 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 31 selfloop transitions, 2 changer transitions 2/57 dead transitions. [2023-11-21 21:00:12,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 198 flow [2023-11-21 21:00:12,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:12,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:12,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-21 21:00:12,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2023-11-21 21:00:12,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-21 21:00:12,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-21 21:00:12,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:12,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-21 21:00:12,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,875 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 123 transitions. [2023-11-21 21:00:12,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 198 flow [2023-11-21 21:00:12,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:12,881 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 94 flow [2023-11-21 21:00:12,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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=94, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-21 21:00:12,885 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-21 21:00:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 94 flow [2023-11-21 21:00:12,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:12,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:12,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:12,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:13,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:13,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:13,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:13,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1643288486, now seen corresponding path program 1 times [2023-11-21 21:00:13,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366743149] [2023-11-21 21:00:13,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:13,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:13,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:13,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:13,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 21:00:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:13,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:13,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:13,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 21:00:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:13,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:13,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:13,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366743149] [2023-11-21 21:00:13,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366743149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:13,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:13,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:13,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066283296] [2023-11-21 21:00:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:13,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:13,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:13,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 54 [2023-11-21 21:00:13,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:13,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:13,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 54 [2023-11-21 21:00:13,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:13,628 INFO L124 PetriNetUnfolderBase]: 603/1203 cut-off events. [2023-11-21 21:00:13,629 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-21 21:00:13,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 1203 events. 603/1203 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7873 event pairs, 205 based on Foata normal form. 12/1152 useless extension candidates. Maximal degree in co-relation 2228. Up to 782 conditions per place. [2023-11-21 21:00:13,645 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 25 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-21 21:00:13,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 162 flow [2023-11-21 21:00:13,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:13,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:13,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-21 21:00:13,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2023-11-21 21:00:13,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-21 21:00:13,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-21 21:00:13,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:13,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-21 21:00:13,650 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) [2023-11-21 21:00:13,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:13,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:13,652 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 94 flow. Second operand 3 states and 112 transitions. [2023-11-21 21:00:13,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 162 flow [2023-11-21 21:00:13,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:13,655 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-21 21:00:13,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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} [2023-11-21 21:00:13,657 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -9 predicate places. [2023-11-21 21:00:13,657 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-21 21:00:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:13,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:13,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:13,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:13,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1643288485, now seen corresponding path program 1 times [2023-11-21 21:00:13,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577680298] [2023-11-21 21:00:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:13,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:13,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:13,866 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:13,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 21:00:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:14,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:14,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:14,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 21:00:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:14,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:14,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577680298] [2023-11-21 21:00:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577680298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:00:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676104408] [2023-11-21 21:00:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:14,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:00:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:00:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:00:14,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 54 [2023-11-21 21:00:14,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:14,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 54 [2023-11-21 21:00:14,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:14,383 INFO L124 PetriNetUnfolderBase]: 620/1208 cut-off events. [2023-11-21 21:00:14,383 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-11-21 21:00:14,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1208 events. 620/1208 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7930 event pairs, 205 based on Foata normal form. 0/1157 useless extension candidates. Maximal degree in co-relation 2232. Up to 811 conditions per place. [2023-11-21 21:00:14,397 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 26 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-21 21:00:14,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 160 flow [2023-11-21 21:00:14,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:00:14,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:00:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-21 21:00:14,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2023-11-21 21:00:14,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-21 21:00:14,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-21 21:00:14,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:14,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-21 21:00:14,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,408 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 110 transitions. [2023-11-21 21:00:14,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 160 flow [2023-11-21 21:00:14,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:14,411 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-21 21:00:14,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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} [2023-11-21 21:00:14,413 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -10 predicate places. [2023-11-21 21:00:14,413 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-21 21:00:14,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:14,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:00:14,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:14,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:14,617 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:14,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:14,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1425374772, now seen corresponding path program 1 times [2023-11-21 21:00:14,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:14,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072583129] [2023-11-21 21:00:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:14,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:14,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:14,621 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:14,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 21:00:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:14,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:00:14,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:14,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:14,838 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:14,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:14,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072583129] [2023-11-21 21:00:14,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072583129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:14,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:14,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:00:14,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678142953] [2023-11-21 21:00:14,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:14,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:00:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:00:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:00:14,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 21:00:14,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:14,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:14,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 21:00:14,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:15,430 INFO L124 PetriNetUnfolderBase]: 1509/2586 cut-off events. [2023-11-21 21:00:15,431 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-11-21 21:00:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 2586 events. 1509/2586 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16435 event pairs, 147 based on Foata normal form. 80/2604 useless extension candidates. Maximal degree in co-relation 4991. Up to 1513 conditions per place. [2023-11-21 21:00:15,459 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 41 selfloop transitions, 5 changer transitions 1/63 dead transitions. [2023-11-21 21:00:15,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 236 flow [2023-11-21 21:00:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:00:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 21:00:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2023-11-21 21:00:15,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6898148148148148 [2023-11-21 21:00:15,462 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 149 transitions. [2023-11-21 21:00:15,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 149 transitions. [2023-11-21 21:00:15,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:15,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 149 transitions. [2023-11-21 21:00:15,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:15,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:15,465 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:15,465 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 4 states and 149 transitions. [2023-11-21 21:00:15,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 236 flow [2023-11-21 21:00:15,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:15,470 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 120 flow [2023-11-21 21:00:15,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, 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=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-11-21 21:00:15,471 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -7 predicate places. [2023-11-21 21:00:15,471 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 120 flow [2023-11-21 21:00:15,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:15,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:15,472 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] [2023-11-21 21:00:15,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:15,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:15,676 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:15,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:15,677 INFO L85 PathProgramCache]: Analyzing trace with hash -320510957, now seen corresponding path program 1 times [2023-11-21 21:00:15,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188993997] [2023-11-21 21:00:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:15,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:15,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:15,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:15,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 21:00:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:15,864 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 21:00:15,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:15,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:15,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188993997] [2023-11-21 21:00:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188993997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:15,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:15,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:15,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505608078] [2023-11-21 21:00:15,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:15,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:00:15,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:15,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:00:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:00:15,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 21:00:15,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:15,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:15,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 21:00:15,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:16,426 INFO L124 PetriNetUnfolderBase]: 945/1658 cut-off events. [2023-11-21 21:00:16,426 INFO L125 PetriNetUnfolderBase]: For 406/406 co-relation queries the response was YES. [2023-11-21 21:00:16,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3696 conditions, 1658 events. 945/1658 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9347 event pairs, 73 based on Foata normal form. 68/1683 useless extension candidates. Maximal degree in co-relation 3683. Up to 729 conditions per place. [2023-11-21 21:00:16,447 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 51 selfloop transitions, 8 changer transitions 1/76 dead transitions. [2023-11-21 21:00:16,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 327 flow [2023-11-21 21:00:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:00:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 21:00:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2023-11-21 21:00:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6925925925925925 [2023-11-21 21:00:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 187 transitions. [2023-11-21 21:00:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 187 transitions. [2023-11-21 21:00:16,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:16,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 187 transitions. [2023-11-21 21:00:16,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.4) internal successors, (187), 5 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) [2023-11-21 21:00:16,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:16,470 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:16,471 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 120 flow. Second operand 5 states and 187 transitions. [2023-11-21 21:00:16,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 327 flow [2023-11-21 21:00:16,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 76 transitions, 317 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 21:00:16,477 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 160 flow [2023-11-21 21:00:16,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-21 21:00:16,479 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-21 21:00:16,479 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 160 flow [2023-11-21 21:00:16,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:16,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:16,480 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] [2023-11-21 21:00:16,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-21 21:00:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:16,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:16,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 303790396, now seen corresponding path program 1 times [2023-11-21 21:00:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:16,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871434038] [2023-11-21 21:00:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:16,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:16,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:16,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:16,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 21:00:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:16,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 21:00:16,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:17,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:17,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871434038] [2023-11-21 21:00:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871434038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:00:17,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882162633] [2023-11-21 21:00:17,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:17,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:00:17,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:00:17,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 54 [2023-11-21 21:00:17,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 160 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) [2023-11-21 21:00:17,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:17,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 54 [2023-11-21 21:00:17,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:17,435 INFO L124 PetriNetUnfolderBase]: 501/874 cut-off events. [2023-11-21 21:00:17,436 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2023-11-21 21:00:17,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 874 events. 501/874 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3958 event pairs, 59 based on Foata normal form. 36/877 useless extension candidates. Maximal degree in co-relation 2211. Up to 268 conditions per place. [2023-11-21 21:00:17,445 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 45 selfloop transitions, 11 changer transitions 1/73 dead transitions. [2023-11-21 21:00:17,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 73 transitions, 338 flow [2023-11-21 21:00:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:00:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2023-11-21 21:00:17,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6450617283950617 [2023-11-21 21:00:17,448 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 209 transitions. [2023-11-21 21:00:17,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 209 transitions. [2023-11-21 21:00:17,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:17,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 209 transitions. [2023-11-21 21:00:17,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:17,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:17,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:17,452 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 160 flow. Second operand 6 states and 209 transitions. [2023-11-21 21:00:17,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 73 transitions, 338 flow [2023-11-21 21:00:17,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 73 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-21 21:00:17,463 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 174 flow [2023-11-21 21:00:17,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2023-11-21 21:00:17,465 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-11-21 21:00:17,465 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 174 flow [2023-11-21 21:00:17,466 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) [2023-11-21 21:00:17,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:17,466 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, 1, 1, 1, 1, 1] [2023-11-21 21:00:17,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:17,670 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:17,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1302542945, now seen corresponding path program 1 times [2023-11-21 21:00:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304079579] [2023-11-21 21:00:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:17,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:17,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:17,673 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:17,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 21:00:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:17,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 21:00:17,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:00:18,647 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#t516~0#1.base_41| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#t517~0#1.base_43| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#t515~0#1.base_47| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t515~0#1.base_47| (_ bv1 1)))) (and (= (select .cse0 |v_ULTIMATE.start_main_~#t516~0#1.base_41|) (_ bv0 1)) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t515~0#1.base_47| (_ bv0 1)) |v_ULTIMATE.start_main_~#t516~0#1.base_41| (_ bv0 1)) |v_ULTIMATE.start_main_~#t517~0#1.base_43| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#t515~0#1.base_47|) (_ bv0 1)) (= (select (store .cse0 |v_ULTIMATE.start_main_~#t516~0#1.base_41| (_ bv1 1)) |v_ULTIMATE.start_main_~#t517~0#1.base_43|) (_ bv0 1))))) is different from true [2023-11-21 21:00:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:00:18,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:00:18,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 21:00:18,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304079579] [2023-11-21 21:00:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304079579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:00:18,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:00:18,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:00:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646512177] [2023-11-21 21:00:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:00:18,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:00:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 21:00:18,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:00:18,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2023-11-21 21:00:18,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 54 [2023-11-21 21:00:18,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:18,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:00:18,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 54 [2023-11-21 21:00:18,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:00:19,085 INFO L124 PetriNetUnfolderBase]: 290/612 cut-off events. [2023-11-21 21:00:19,085 INFO L125 PetriNetUnfolderBase]: For 161/166 co-relation queries the response was YES. [2023-11-21 21:00:19,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1300 conditions, 612 events. 290/612 cut-off events. For 161/166 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3002 event pairs, 53 based on Foata normal form. 8/579 useless extension candidates. Maximal degree in co-relation 1283. Up to 403 conditions per place. [2023-11-21 21:00:19,092 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 30 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-21 21:00:19,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 59 transitions, 274 flow [2023-11-21 21:00:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 21:00:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 21:00:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 152 transitions. [2023-11-21 21:00:19,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2023-11-21 21:00:19,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 152 transitions. [2023-11-21 21:00:19,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 152 transitions. [2023-11-21 21:00:19,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:00:19,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 152 transitions. [2023-11-21 21:00:19,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:19,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:19,099 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:19,099 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 174 flow. Second operand 6 states and 152 transitions. [2023-11-21 21:00:19,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 59 transitions, 274 flow [2023-11-21 21:00:19,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 218 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-11-21 21:00:19,103 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 150 flow [2023-11-21 21:00:19,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-11-21 21:00:19,104 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2023-11-21 21:00:19,105 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 150 flow [2023-11-21 21:00:19,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:00:19,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:00:19,106 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, 1, 1, 1, 1, 1] [2023-11-21 21:00:19,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 21:00:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:19,310 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 10 more)] === [2023-11-21 21:00:19,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:00:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1577381557, now seen corresponding path program 1 times [2023-11-21 21:00:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 21:00:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839547161] [2023-11-21 21:00:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:00:19,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 21:00:19,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 21:00:19,313 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 21:00:19,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3556de2f-52d8-4d1a-9507-2b007a15268b/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 21:00:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:00:19,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 21:00:19,531 INFO L285 TraceCheckSpWp]: Computing forward predicates...