./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl --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 be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:59,646 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:59,721 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:11:59,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:59,731 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:59,770 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:59,771 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:59,772 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:59,773 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:59,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:59,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:59,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:59,781 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:59,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:59,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:59,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:59,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:59,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:59,785 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:11:59,785 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:11:59,786 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:11:59,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:59,786 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:11:59,787 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:59,787 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:59,788 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:59,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:59,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:59,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:59,789 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:59,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:59,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:59,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:59,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:59,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:59,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:59,791 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:59,791 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:59,791 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_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be536b3b382c4e63adbabc11deb06983f35dbd290b78e0d42f1a068990873986 [2023-11-12 02:12:00,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:00,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:00,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:00,143 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:00,144 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:00,145 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2023-11-12 02:12:03,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:03,657 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:03,657 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/sv-benchmarks/c/pthread-wmm/safe009_power.opt.i [2023-11-12 02:12:03,682 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/data/41d86ce09/3acbcda049f84267974169e861f65550/FLAGdb22c392e [2023-11-12 02:12:03,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/data/41d86ce09/3acbcda049f84267974169e861f65550 [2023-11-12 02:12:03,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:03,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:03,705 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:03,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:03,715 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:03,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,721 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286a2622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:03, skipping insertion in model container [2023-11-12 02:12:03,721 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:03" (1/1) ... [2023-11-12 02:12:03,777 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:04,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:04,262 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:04,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:04,381 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:04,382 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:04,390 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:04,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04 WrapperNode [2023-11-12 02:12:04,391 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:04,392 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:04,392 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:04,392 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:04,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,421 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,457 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 185 [2023-11-12 02:12:04,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:04,458 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:04,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:04,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:04,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,493 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,528 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,534 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:04,535 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:04,535 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:04,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:04,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (1/1) ... [2023-11-12 02:12:04,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:04,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:04,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:04,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_40a05bea-fd0c-44d8-9fc0-a616713cab1d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:04,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:12:04,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:12:04,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:12:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:04,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:12:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:12:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:12:04,663 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:12:04,663 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:12:04,664 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:12:04,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:04,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:12:04,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:04,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:04,668 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:12:04,899 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:04,901 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:05,561 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:06,412 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:06,413 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:12:06,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:06 BoogieIcfgContainer [2023-11-12 02:12:06,417 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:06,422 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:06,422 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:06,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:06,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:03" (1/3) ... [2023-11-12 02:12:06,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181b6342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:06, skipping insertion in model container [2023-11-12 02:12:06,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:04" (2/3) ... [2023-11-12 02:12:06,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@181b6342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:06, skipping insertion in model container [2023-11-12 02:12:06,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:06" (3/3) ... [2023-11-12 02:12:06,432 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.opt.i [2023-11-12 02:12:06,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:06,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-11-12 02:12:06,456 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:06,631 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:06,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 177 transitions, 366 flow [2023-11-12 02:12:06,814 INFO L124 PetriNetUnfolderBase]: 3/174 cut-off events. [2023-11-12 02:12:06,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:06,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 174 events. 3/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 254 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:12:06,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 177 transitions, 366 flow [2023-11-12 02:12:06,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 174 transitions, 357 flow [2023-11-12 02:12:06,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:06,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 174 transitions, 357 flow [2023-11-12 02:12:06,870 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 174 transitions, 357 flow [2023-11-12 02:12:06,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 174 transitions, 357 flow [2023-11-12 02:12:06,956 INFO L124 PetriNetUnfolderBase]: 3/174 cut-off events. [2023-11-12 02:12:06,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:06,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 174 events. 3/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 250 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-11-12 02:12:06,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 6952 [2023-11-12 02:12:24,975 INFO L134 LiptonReduction]: Checked pairs total: 31000 [2023-11-12 02:12:24,976 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-11-12 02:12:24,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:24,999 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;@1d7cfdf2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:24,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-11-12 02:12:25,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:25,001 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:12:25,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:25,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:25,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:12:25,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:25,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1189, now seen corresponding path program 1 times [2023-11-12 02:12:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312300869] [2023-11-12 02:12:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312300869] [2023-11-12 02:12:25,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312300869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:25,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:12:25,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245925307] [2023-11-12 02:12:25,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:25,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:25,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:25,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:25,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 333 [2023-11-12 02:12:25,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 149 flow. Second operand has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:25,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:25,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 333 [2023-11-12 02:12:25,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:33,042 INFO L124 PetriNetUnfolderBase]: 31868/44217 cut-off events. [2023-11-12 02:12:33,042 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-12 02:12:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88643 conditions, 44217 events. 31868/44217 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 297962 event pairs, 31868 based on Foata normal form. 0/18261 useless extension candidates. Maximal degree in co-relation 88632. Up to 44200 conditions per place. [2023-11-12 02:12:33,395 INFO L140 encePairwiseOnDemand]: 312/333 looper letters, 47 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-12 02:12:33,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 199 flow [2023-11-12 02:12:33,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:12:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 324 transitions. [2023-11-12 02:12:33,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-11-12 02:12:33,415 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 324 transitions. [2023-11-12 02:12:33,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 324 transitions. [2023-11-12 02:12:33,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:33,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 324 transitions. [2023-11-12 02:12:33,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.0) internal successors, (324), 2 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) [2023-11-12 02:12:33,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:33,438 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:33,440 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 149 flow. Second operand 2 states and 324 transitions. [2023-11-12 02:12:33,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 199 flow [2023-11-12 02:12:33,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 196 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:33,461 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 102 flow [2023-11-12 02:12:33,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-12 02:12:33,468 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -23 predicate places. [2023-11-12 02:12:33,468 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 102 flow [2023-11-12 02:12:33,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:33,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:33,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:12:33,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:33,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:33,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash 36354619, now seen corresponding path program 1 times [2023-11-12 02:12:33,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:33,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651428478] [2023-11-12 02:12:33,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:33,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:33,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651428478] [2023-11-12 02:12:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651428478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:33,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:33,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:33,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325184726] [2023-11-12 02:12:33,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:33,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:33,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:33,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 333 [2023-11-12 02:12:33,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:33,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:33,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 333 [2023-11-12 02:12:33,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:39,863 INFO L124 PetriNetUnfolderBase]: 28558/39660 cut-off events. [2023-11-12 02:12:39,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:39,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79519 conditions, 39660 events. 28558/39660 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2915. Compared 296073 event pairs, 5388 based on Foata normal form. 0/16924 useless extension candidates. Maximal degree in co-relation 79516. Up to 31802 conditions per place. [2023-11-12 02:12:40,076 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 80 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-12 02:12:40,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 340 flow [2023-11-12 02:12:40,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-11-12 02:12:40,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644644644644645 [2023-11-12 02:12:40,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-11-12 02:12:40,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-11-12 02:12:40,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:40,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-11-12 02:12:40,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,088 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 102 flow. Second operand 3 states and 464 transitions. [2023-11-12 02:12:40,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 340 flow [2023-11-12 02:12:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 83 transitions, 340 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:40,092 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 104 flow [2023-11-12 02:12:40,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, 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=57, PETRI_TRANSITIONS=47} [2023-11-12 02:12:40,093 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2023-11-12 02:12:40,093 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 104 flow [2023-11-12 02:12:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:40,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:12:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:40,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:40,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1126994172, now seen corresponding path program 1 times [2023-11-12 02:12:40,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:40,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460961669] [2023-11-12 02:12:40,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:40,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:40,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460961669] [2023-11-12 02:12:40,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460961669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:40,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:40,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051514198] [2023-11-12 02:12:40,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:40,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:40,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 333 [2023-11-12 02:12:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:40,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 333 [2023-11-12 02:12:40,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:44,194 INFO L124 PetriNetUnfolderBase]: 17406/25369 cut-off events. [2023-11-12 02:12:44,195 INFO L125 PetriNetUnfolderBase]: For 920/920 co-relation queries the response was YES. [2023-11-12 02:12:44,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51551 conditions, 25369 events. 17406/25369 cut-off events. For 920/920 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 172490 event pairs, 10856 based on Foata normal form. 0/13794 useless extension candidates. Maximal degree in co-relation 51547. Up to 14741 conditions per place. [2023-11-12 02:12:44,391 INFO L140 encePairwiseOnDemand]: 315/333 looper letters, 55 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2023-11-12 02:12:44,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 270 flow [2023-11-12 02:12:44,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:44,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2023-11-12 02:12:44,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44544544544544545 [2023-11-12 02:12:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2023-11-12 02:12:44,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2023-11-12 02:12:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:44,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2023-11-12 02:12:44,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:44,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:44,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:44,407 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 104 flow. Second operand 3 states and 445 transitions. [2023-11-12 02:12:44,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 270 flow [2023-11-12 02:12:44,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 65 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:44,412 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 174 flow [2023-11-12 02:12:44,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-11-12 02:12:44,416 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -22 predicate places. [2023-11-12 02:12:44,416 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 174 flow [2023-11-12 02:12:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:44,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:44,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:12:44,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:44,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:44,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1126994173, now seen corresponding path program 1 times [2023-11-12 02:12:44,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:44,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700990346] [2023-11-12 02:12:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:44,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:44,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:44,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700990346] [2023-11-12 02:12:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700990346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:44,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:44,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:44,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208957784] [2023-11-12 02:12:44,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:44,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:44,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:44,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:44,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:44,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 333 [2023-11-12 02:12:44,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:44,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:44,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 333 [2023-11-12 02:12:44,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:50,261 INFO L124 PetriNetUnfolderBase]: 22443/32416 cut-off events. [2023-11-12 02:12:50,261 INFO L125 PetriNetUnfolderBase]: For 8100/8100 co-relation queries the response was YES. [2023-11-12 02:12:50,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82337 conditions, 32416 events. 22443/32416 cut-off events. For 8100/8100 co-relation queries the response was YES. Maximal size of possible extension queue 2171. Compared 230663 event pairs, 12862 based on Foata normal form. 0/24395 useless extension candidates. Maximal degree in co-relation 82332. Up to 25556 conditions per place. [2023-11-12 02:12:50,485 INFO L140 encePairwiseOnDemand]: 325/333 looper letters, 85 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2023-11-12 02:12:50,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 514 flow [2023-11-12 02:12:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-11-12 02:12:50,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46146146146146144 [2023-11-12 02:12:50,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-11-12 02:12:50,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-11-12 02:12:50,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:50,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-11-12 02:12:50,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:50,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:50,496 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:50,497 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 174 flow. Second operand 3 states and 461 transitions. [2023-11-12 02:12:50,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 514 flow [2023-11-12 02:12:50,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 480 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:50,567 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 242 flow [2023-11-12 02:12:50,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-11-12 02:12:50,569 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -21 predicate places. [2023-11-12 02:12:50,570 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 242 flow [2023-11-12 02:12:50,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:50,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:50,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:12:50,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:50,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:50,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:50,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1126994175, now seen corresponding path program 1 times [2023-11-12 02:12:50,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:50,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044082823] [2023-11-12 02:12:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:50,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044082823] [2023-11-12 02:12:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044082823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:50,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830235153] [2023-11-12 02:12:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:50,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:50,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:50,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:50,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 333 [2023-11-12 02:12:50,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:50,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:50,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 333 [2023-11-12 02:12:50,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:52,556 INFO L124 PetriNetUnfolderBase]: 6503/9853 cut-off events. [2023-11-12 02:12:52,556 INFO L125 PetriNetUnfolderBase]: For 5552/5589 co-relation queries the response was YES. [2023-11-12 02:12:52,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29452 conditions, 9853 events. 6503/9853 cut-off events. For 5552/5589 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 61412 event pairs, 4627 based on Foata normal form. 2879/11185 useless extension candidates. Maximal degree in co-relation 29446. Up to 9728 conditions per place. [2023-11-12 02:12:52,616 INFO L140 encePairwiseOnDemand]: 323/333 looper letters, 50 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2023-11-12 02:12:52,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 324 flow [2023-11-12 02:12:52,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:52,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-11-12 02:12:52,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42542542542542544 [2023-11-12 02:12:52,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-11-12 02:12:52,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-11-12 02:12:52,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:52,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-11-12 02:12:52,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:52,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:52,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:52,630 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 242 flow. Second operand 3 states and 425 transitions. [2023-11-12 02:12:52,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 324 flow [2023-11-12 02:12:52,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 314 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:52,668 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 214 flow [2023-11-12 02:12:52,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-11-12 02:12:52,671 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -29 predicate places. [2023-11-12 02:12:52,672 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 214 flow [2023-11-12 02:12:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:52,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:52,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:52,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:52,673 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 72 more)] === [2023-11-12 02:12:52,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1880697764, now seen corresponding path program 1 times [2023-11-12 02:12:52,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:52,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158595015] [2023-11-12 02:12:52,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:52,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:52,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:52,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158595015] [2023-11-12 02:12:52,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158595015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:52,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171340155] [2023-11-12 02:12:52,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:52,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:52,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:52,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:52,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 333 [2023-11-12 02:12:52,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:52,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:52,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 333 [2023-11-12 02:12:52,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand