./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe018_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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/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_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe018_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/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_9e8a202b-dfa5-409b-8383-883e48da2258/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 81ed16bb51b8da596bb3c9a2024b72d3baf359b31125524126025207d822fe2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:11:53,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:11:53,521 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:11:53,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:11:53,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:11:53,577 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:11:53,578 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:11:53,579 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:11:53,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:11:53,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:11:53,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:11:53,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:11:53,589 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:11:53,591 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:11:53,592 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:11:53,592 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:11:53,593 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:11:53,593 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:11:53,594 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:11:53,594 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:11:53,595 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:11:53,595 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:11:53,596 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:11:53,596 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:11:53,597 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:11:53,597 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:11:53,598 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:11:53,598 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:11:53,599 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:11:53,599 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:53,600 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:11:53,600 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:11:53,600 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:11:53,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:11:53,601 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:11:53,601 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:11:53,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:11:53,602 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:11:53,602 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_9e8a202b-dfa5-409b-8383-883e48da2258/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81ed16bb51b8da596bb3c9a2024b72d3baf359b31125524126025207d822fe2c [2023-11-12 02:11:53,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:11:53,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:11:53,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:11:53,922 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:11:53,923 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:11:53,924 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe018_power.opt.i [2023-11-12 02:11:57,172 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:11:57,460 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:11:57,460 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/sv-benchmarks/c/pthread-wmm/safe018_power.opt.i [2023-11-12 02:11:57,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/data/f6ce9f631/164c768cde284ef4bf6d96f181d8d6f3/FLAGec353028f [2023-11-12 02:11:57,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/data/f6ce9f631/164c768cde284ef4bf6d96f181d8d6f3 [2023-11-12 02:11:57,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:11:57,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:11:57,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:57,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:11:57,528 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:11:57,530 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:57" (1/1) ... [2023-11-12 02:11:57,531 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@485f414d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:57, skipping insertion in model container [2023-11-12 02:11:57,532 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:11:57" (1/1) ... [2023-11-12 02:11:57,609 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:11:58,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:58,118 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:11:58,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:11:58,242 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:58,243 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:11:58,251 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:11:58,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58 WrapperNode [2023-11-12 02:11:58,252 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:11:58,253 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:58,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:11:58,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:11:58,262 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,346 INFO L138 Inliner]: procedures = 176, calls = 76, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 183 [2023-11-12 02:11:58,346 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:11:58,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:11:58,347 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:11:58,347 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:11:58,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,376 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,380 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,435 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:11:58,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:11:58,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:11:58,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:11:58,438 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (1/1) ... [2023-11-12 02:11:58,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:11:58,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:11:58,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:11:58,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e8a202b-dfa5-409b-8383-883e48da2258/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:11:58,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:11:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:11:58,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:11:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:11:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:11:58,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:11:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:11:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:11:58,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:11:58,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:11:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:11:58,536 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:11:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:11:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:11:58,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:11:58,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:11:58,541 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 02:11:58,770 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:11:58,772 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:11:59,478 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:00,557 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:00,558 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:12:00,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:00 BoogieIcfgContainer [2023-11-12 02:12:00,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:00,565 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:00,566 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:00,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:00,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:11:57" (1/3) ... [2023-11-12 02:12:00,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b12eb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:00, skipping insertion in model container [2023-11-12 02:12:00,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:11:58" (2/3) ... [2023-11-12 02:12:00,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b12eb4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:00, skipping insertion in model container [2023-11-12 02:12:00,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:00" (3/3) ... [2023-11-12 02:12:00,575 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_power.opt.i [2023-11-12 02:12:00,595 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:00,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 51 error locations. [2023-11-12 02:12:00,596 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:00,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:12:00,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 185 transitions, 382 flow [2023-11-12 02:12:01,042 INFO L124 PetriNetUnfolderBase]: 3/182 cut-off events. [2023-11-12 02:12:01,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:01,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 182 events. 3/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 307 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-12 02:12:01,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 185 transitions, 382 flow [2023-11-12 02:12:01,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 189 places, 182 transitions, 373 flow [2023-11-12 02:12:01,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:01,084 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 189 places, 182 transitions, 373 flow [2023-11-12 02:12:01,089 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 189 places, 182 transitions, 373 flow [2023-11-12 02:12:01,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 189 places, 182 transitions, 373 flow [2023-11-12 02:12:01,169 INFO L124 PetriNetUnfolderBase]: 3/182 cut-off events. [2023-11-12 02:12:01,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:01,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 182 events. 3/182 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 306 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 125. Up to 2 conditions per place. [2023-11-12 02:12:01,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 8072 [2023-11-12 02:12:19,646 INFO L134 LiptonReduction]: Checked pairs total: 41623 [2023-11-12 02:12:19,646 INFO L136 LiptonReduction]: Total number of compositions: 160 [2023-11-12 02:12:19,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:12:19,679 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;@771a4d29, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:12:19,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-11-12 02:12:19,683 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:12:19,683 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:12:19,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:19,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:19,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:12:19,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:19,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:19,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1282, now seen corresponding path program 1 times [2023-11-12 02:12:19,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:19,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611621699] [2023-11-12 02:12:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:19,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:19,863 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 02:12:19,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:19,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611621699] [2023-11-12 02:12:19,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611621699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:19,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:19,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:12:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946947624] [2023-11-12 02:12:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:19,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:12:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:19,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:12:19,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:12:19,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 345 [2023-11-12 02:12:19,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 163 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 02:12:19,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:19,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 345 [2023-11-12 02:12:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:27,159 INFO L124 PetriNetUnfolderBase]: 20995/29384 cut-off events. [2023-11-12 02:12:27,160 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-12 02:12:27,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58787 conditions, 29384 events. 20995/29384 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 2238. Compared 191875 event pairs, 20995 based on Foata normal form. 0/12584 useless extension candidates. Maximal degree in co-relation 58776. Up to 29277 conditions per place. [2023-11-12 02:12:27,444 INFO L140 encePairwiseOnDemand]: 314/345 looper letters, 44 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-11-12 02:12:27,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 187 flow [2023-11-12 02:12:27,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:12:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:12:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 331 transitions. [2023-11-12 02:12:27,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797101449275362 [2023-11-12 02:12:27,467 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 331 transitions. [2023-11-12 02:12:27,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 331 transitions. [2023-11-12 02:12:27,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:27,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 331 transitions. [2023-11-12 02:12:27,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 165.5) internal successors, (331), 2 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 02:12:27,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 02:12:27,489 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 345.0) internal successors, (1035), 3 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states 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 02:12:27,491 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 163 flow. Second operand 2 states and 331 transitions. [2023-11-12 02:12:27,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 187 flow [2023-11-12 02:12:27,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 184 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:27,504 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 96 flow [2023-11-12 02:12:27,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2023-11-12 02:12:27,512 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -33 predicate places. [2023-11-12 02:12:27,512 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 96 flow [2023-11-12 02:12:27,513 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 02:12:27,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:27,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:12:27,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:12:27,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:27,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:27,528 INFO L85 PathProgramCache]: Analyzing trace with hash 39305624, now seen corresponding path program 1 times [2023-11-12 02:12:27,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:27,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540497989] [2023-11-12 02:12:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:27,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:27,990 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 02:12:27,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:27,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540497989] [2023-11-12 02:12:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540497989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:27,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:27,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:27,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438385665] [2023-11-12 02:12:27,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:27,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:27,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:27,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:27,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:28,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 345 [2023-11-12 02:12:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 02:12:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:28,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 345 [2023-11-12 02:12:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:31,566 INFO L124 PetriNetUnfolderBase]: 13587/19959 cut-off events. [2023-11-12 02:12:31,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:12:31,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39717 conditions, 19959 events. 13587/19959 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 131798 event pairs, 8543 based on Foata normal form. 0/10837 useless extension candidates. Maximal degree in co-relation 39714. Up to 11976 conditions per place. [2023-11-12 02:12:31,703 INFO L140 encePairwiseOnDemand]: 328/345 looper letters, 52 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2023-11-12 02:12:31,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 62 transitions, 252 flow [2023-11-12 02:12:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:31,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-11-12 02:12:31,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260869565217391 [2023-11-12 02:12:31,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-11-12 02:12:31,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-11-12 02:12:31,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:31,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-11-12 02:12:31,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 02:12:31,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:31,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:31,723 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 96 flow. Second operand 3 states and 441 transitions. [2023-11-12 02:12:31,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 62 transitions, 252 flow [2023-11-12 02:12:31,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 252 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:12:31,728 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 168 flow [2023-11-12 02:12:31,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-11-12 02:12:31,730 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -31 predicate places. [2023-11-12 02:12:31,731 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 168 flow [2023-11-12 02:12:31,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 02:12:31,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:31,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:12:31,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:12:31,739 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:31,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:31,742 INFO L85 PathProgramCache]: Analyzing trace with hash 39305625, now seen corresponding path program 1 times [2023-11-12 02:12:31,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:31,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601269381] [2023-11-12 02:12:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:31,926 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 02:12:31,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601269381] [2023-11-12 02:12:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601269381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144342551] [2023-11-12 02:12:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:31,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 345 [2023-11-12 02:12:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 168 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 02:12:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 345 [2023-11-12 02:12:31,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:33,614 INFO L124 PetriNetUnfolderBase]: 4629/7162 cut-off events. [2023-11-12 02:12:33,614 INFO L125 PetriNetUnfolderBase]: For 1923/1923 co-relation queries the response was YES. [2023-11-12 02:12:33,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19324 conditions, 7162 events. 4629/7162 cut-off events. For 1923/1923 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 43429 event pairs, 3646 based on Foata normal form. 1586/7422 useless extension candidates. Maximal degree in co-relation 19319. Up to 6982 conditions per place. [2023-11-12 02:12:33,659 INFO L140 encePairwiseOnDemand]: 336/345 looper letters, 40 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-12 02:12:33,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 234 flow [2023-11-12 02:12:33,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:33,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-11-12 02:12:33,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40869565217391307 [2023-11-12 02:12:33,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-11-12 02:12:33,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-11-12 02:12:33,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:33,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-11-12 02:12:33,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states 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 02:12:33,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:33,676 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:33,676 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 168 flow. Second operand 3 states and 423 transitions. [2023-11-12 02:12:33,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 234 flow [2023-11-12 02:12:33,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:33,700 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 136 flow [2023-11-12 02:12:33,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-12 02:12:33,704 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -39 predicate places. [2023-11-12 02:12:33,704 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 136 flow [2023-11-12 02:12:33,705 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 02:12:33,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:33,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:12:33,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:12:33,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:33,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash -881115461, now seen corresponding path program 1 times [2023-11-12 02:12:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830586317] [2023-11-12 02:12:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:33,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:34,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:34,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:34,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830586317] [2023-11-12 02:12:34,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830586317] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:34,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:34,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:34,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993820037] [2023-11-12 02:12:34,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:34,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:34,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:34,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:34,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 345 [2023-11-12 02:12:34,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 02:12:34,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:34,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 345 [2023-11-12 02:12:34,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:35,055 INFO L124 PetriNetUnfolderBase]: 3822/5887 cut-off events. [2023-11-12 02:12:35,055 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2023-11-12 02:12:35,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15154 conditions, 5887 events. 3822/5887 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 35622 event pairs, 924 based on Foata normal form. 0/4511 useless extension candidates. Maximal degree in co-relation 15149. Up to 4990 conditions per place. [2023-11-12 02:12:35,084 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 67 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-12 02:12:35,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 366 flow [2023-11-12 02:12:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:35,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-12 02:12:35,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42318840579710143 [2023-11-12 02:12:35,087 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-12 02:12:35,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-12 02:12:35,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:35,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-12 02:12:35,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:35,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:35,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:35,094 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 136 flow. Second operand 3 states and 438 transitions. [2023-11-12 02:12:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 366 flow [2023-11-12 02:12:35,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 365 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:35,096 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 137 flow [2023-11-12 02:12:35,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, 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=137, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-12 02:12:35,097 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -39 predicate places. [2023-11-12 02:12:35,098 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 137 flow [2023-11-12 02:12:35,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 02:12:35,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:35,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:35,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:12:35,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:35,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:35,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2062265913, now seen corresponding path program 1 times [2023-11-12 02:12:35,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:35,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850984166] [2023-11-12 02:12:35,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:35,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:35,207 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 02:12:35,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:35,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850984166] [2023-11-12 02:12:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850984166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:35,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400666634] [2023-11-12 02:12:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:35,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 345 [2023-11-12 02:12:35,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 137 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 02:12:35,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:35,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 345 [2023-11-12 02:12:35,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:36,332 INFO L124 PetriNetUnfolderBase]: 3742/5907 cut-off events. [2023-11-12 02:12:36,332 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-12 02:12:36,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15363 conditions, 5907 events. 3742/5907 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 36019 event pairs, 1272 based on Foata normal form. 0/4567 useless extension candidates. Maximal degree in co-relation 15358. Up to 4413 conditions per place. [2023-11-12 02:12:36,359 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 59 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-12 02:12:36,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 335 flow [2023-11-12 02:12:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-12 02:12:36,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41835748792270533 [2023-11-12 02:12:36,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-12 02:12:36,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-12 02:12:36,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:36,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-12 02:12:36,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 02:12:36,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:36,370 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 137 flow. Second operand 3 states and 433 transitions. [2023-11-12 02:12:36,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 335 flow [2023-11-12 02:12:36,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:36,374 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 146 flow [2023-11-12 02:12:36,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-11-12 02:12:36,375 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -38 predicate places. [2023-11-12 02:12:36,375 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 146 flow [2023-11-12 02:12:36,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 02:12:36,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:36,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:36,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:12:36,376 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:36,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:36,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2062265550, now seen corresponding path program 1 times [2023-11-12 02:12:36,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:36,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68701424] [2023-11-12 02:12:36,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:36,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:36,633 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 02:12:36,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:36,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68701424] [2023-11-12 02:12:36,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68701424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:36,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:36,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:12:36,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323701224] [2023-11-12 02:12:36,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:36,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:12:36,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:12:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:12:36,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 345 [2023-11-12 02:12:36,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 02:12:36,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:36,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 345 [2023-11-12 02:12:36,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:37,905 INFO L124 PetriNetUnfolderBase]: 3702/5707 cut-off events. [2023-11-12 02:12:37,905 INFO L125 PetriNetUnfolderBase]: For 1252/1252 co-relation queries the response was YES. [2023-11-12 02:12:37,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15380 conditions, 5707 events. 3702/5707 cut-off events. For 1252/1252 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 35742 event pairs, 746 based on Foata normal form. 0/4547 useless extension candidates. Maximal degree in co-relation 15374. Up to 4812 conditions per place. [2023-11-12 02:12:37,946 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 70 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-12 02:12:37,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 404 flow [2023-11-12 02:12:37,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:12:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:12:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-11-12 02:12:37,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42318840579710143 [2023-11-12 02:12:37,950 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-11-12 02:12:37,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-11-12 02:12:37,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:37,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-11-12 02:12:37,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:37,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:37,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 345.0) internal successors, (1380), 4 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states 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 02:12:37,958 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 146 flow. Second operand 3 states and 438 transitions. [2023-11-12 02:12:37,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 404 flow [2023-11-12 02:12:37,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 394 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:37,962 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 148 flow [2023-11-12 02:12:37,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=148, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2023-11-12 02:12:37,964 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -37 predicate places. [2023-11-12 02:12:37,964 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 148 flow [2023-11-12 02:12:37,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states 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 02:12:37,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:37,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:37,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:12:37,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:37,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash 494276308, now seen corresponding path program 1 times [2023-11-12 02:12:37,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:37,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213758649] [2023-11-12 02:12:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:37,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:12:38,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:38,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213758649] [2023-11-12 02:12:38,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213758649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:38,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:38,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:12:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820420229] [2023-11-12 02:12:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:38,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:38,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 345 [2023-11-12 02:12:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 02:12:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:38,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 345 [2023-11-12 02:12:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:40,157 INFO L124 PetriNetUnfolderBase]: 6379/9748 cut-off events. [2023-11-12 02:12:40,157 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2023-11-12 02:12:40,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26540 conditions, 9748 events. 6379/9748 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 581. Compared 59674 event pairs, 1464 based on Foata normal form. 60/7712 useless extension candidates. Maximal degree in co-relation 26533. Up to 4044 conditions per place. [2023-11-12 02:12:40,219 INFO L140 encePairwiseOnDemand]: 341/345 looper letters, 88 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-12 02:12:40,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 505 flow [2023-11-12 02:12:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 571 transitions. [2023-11-12 02:12:40,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413768115942029 [2023-11-12 02:12:40,224 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 571 transitions. [2023-11-12 02:12:40,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 571 transitions. [2023-11-12 02:12:40,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:40,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 571 transitions. [2023-11-12 02:12:40,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:12:40,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:40,233 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:40,234 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 148 flow. Second operand 4 states and 571 transitions. [2023-11-12 02:12:40,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 505 flow [2023-11-12 02:12:40,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 91 transitions, 499 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:40,238 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 163 flow [2023-11-12 02:12:40,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-12 02:12:40,240 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -34 predicate places. [2023-11-12 02:12:40,240 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 163 flow [2023-11-12 02:12:40,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states 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 02:12:40,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:40,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:40,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:12:40,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:40,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:40,242 INFO L85 PathProgramCache]: Analyzing trace with hash 494186665, now seen corresponding path program 1 times [2023-11-12 02:12:40,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:40,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880748112] [2023-11-12 02:12:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:40,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:40,757 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 02:12:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:40,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880748112] [2023-11-12 02:12:40,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880748112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:40,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:40,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:40,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135954829] [2023-11-12 02:12:40,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:40,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:40,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:40,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:40,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:40,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 345 [2023-11-12 02:12:40,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 02:12:40,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:40,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 345 [2023-11-12 02:12:40,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:42,531 INFO L124 PetriNetUnfolderBase]: 5520/8653 cut-off events. [2023-11-12 02:12:42,531 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2023-11-12 02:12:42,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24259 conditions, 8653 events. 5520/8653 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 55040 event pairs, 2304 based on Foata normal form. 0/6781 useless extension candidates. Maximal degree in co-relation 24250. Up to 7214 conditions per place. [2023-11-12 02:12:42,578 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 58 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2023-11-12 02:12:42,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 354 flow [2023-11-12 02:12:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 541 transitions. [2023-11-12 02:12:42,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39202898550724635 [2023-11-12 02:12:42,581 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 541 transitions. [2023-11-12 02:12:42,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 541 transitions. [2023-11-12 02:12:42,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:42,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 541 transitions. [2023-11-12 02:12:42,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states 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 02:12:42,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:42,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:42,589 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 163 flow. Second operand 4 states and 541 transitions. [2023-11-12 02:12:42,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 354 flow [2023-11-12 02:12:42,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:12:42,603 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 161 flow [2023-11-12 02:12:42,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-12 02:12:42,604 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -34 predicate places. [2023-11-12 02:12:42,604 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 161 flow [2023-11-12 02:12:42,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 0 states have call successors, (0), 0 states 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 02:12:42,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:42,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:12:42,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:42,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:42,606 INFO L85 PathProgramCache]: Analyzing trace with hash 494275014, now seen corresponding path program 1 times [2023-11-12 02:12:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337480656] [2023-11-12 02:12:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:42,826 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 02:12:42,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:42,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337480656] [2023-11-12 02:12:42,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337480656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:42,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:42,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794509884] [2023-11-12 02:12:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:12:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:12:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:12:42,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 345 [2023-11-12 02:12:42,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 02:12:42,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:42,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 345 [2023-11-12 02:12:42,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:44,449 INFO L124 PetriNetUnfolderBase]: 6105/9666 cut-off events. [2023-11-12 02:12:44,449 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-11-12 02:12:44,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26916 conditions, 9666 events. 6105/9666 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 64077 event pairs, 2064 based on Foata normal form. 84/7870 useless extension candidates. Maximal degree in co-relation 26907. Up to 4677 conditions per place. [2023-11-12 02:12:44,505 INFO L140 encePairwiseOnDemand]: 335/345 looper letters, 47 selfloop transitions, 14 changer transitions 0/62 dead transitions. [2023-11-12 02:12:44,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 349 flow [2023-11-12 02:12:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:44,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:44,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2023-11-12 02:12:44,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992753623188406 [2023-11-12 02:12:44,509 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2023-11-12 02:12:44,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2023-11-12 02:12:44,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:44,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2023-11-12 02:12:44,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states 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 02:12:44,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:44,516 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:44,517 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 161 flow. Second operand 4 states and 551 transitions. [2023-11-12 02:12:44,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 349 flow [2023-11-12 02:12:44,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 342 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:12:44,521 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 194 flow [2023-11-12 02:12:44,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-12 02:12:44,523 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -35 predicate places. [2023-11-12 02:12:44,523 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 194 flow [2023-11-12 02:12:44,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 02:12:44,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:44,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:44,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:12:44,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:44,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:44,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1857259128, now seen corresponding path program 1 times [2023-11-12 02:12:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:44,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555975755] [2023-11-12 02:12:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:12:44,718 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 02:12:44,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:12:44,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555975755] [2023-11-12 02:12:44,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555975755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:12:44,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:12:44,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:12:44,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558552089] [2023-11-12 02:12:44,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:12:44,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:12:44,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:12:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:12:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:12:44,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 345 [2023-11-12 02:12:44,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 02:12:44,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:12:44,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 345 [2023-11-12 02:12:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:12:46,178 INFO L124 PetriNetUnfolderBase]: 5258/8327 cut-off events. [2023-11-12 02:12:46,178 INFO L125 PetriNetUnfolderBase]: For 3266/3266 co-relation queries the response was YES. [2023-11-12 02:12:46,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24772 conditions, 8327 events. 5258/8327 cut-off events. For 3266/3266 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 53305 event pairs, 2134 based on Foata normal form. 97/7357 useless extension candidates. Maximal degree in co-relation 24764. Up to 3527 conditions per place. [2023-11-12 02:12:46,235 INFO L140 encePairwiseOnDemand]: 331/345 looper letters, 51 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2023-11-12 02:12:46,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 64 transitions, 400 flow [2023-11-12 02:12:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:12:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:12:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 533 transitions. [2023-11-12 02:12:46,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38623188405797104 [2023-11-12 02:12:46,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 533 transitions. [2023-11-12 02:12:46,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 533 transitions. [2023-11-12 02:12:46,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:12:46,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 533 transitions. [2023-11-12 02:12:46,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 133.25) internal successors, (533), 4 states have internal predecessors, (533), 0 states have call successors, (0), 0 states 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 02:12:46,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:46,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 345.0) internal successors, (1725), 5 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states 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 02:12:46,246 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 194 flow. Second operand 4 states and 533 transitions. [2023-11-12 02:12:46,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 64 transitions, 400 flow [2023-11-12 02:12:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 64 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:12:46,262 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 262 flow [2023-11-12 02:12:46,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-12 02:12:46,263 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -31 predicate places. [2023-11-12 02:12:46,263 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 262 flow [2023-11-12 02:12:46,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.6) internal successors, (608), 5 states have internal predecessors, (608), 0 states have call successors, (0), 0 states 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 02:12:46,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:12:46,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:12:46,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:12:46,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 88 more)] === [2023-11-12 02:12:46,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:12:46,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1832256371, now seen corresponding path program 1 times [2023-11-12 02:12:46,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:12:46,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951752931] [2023-11-12 02:12:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:12:46,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:12:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat