./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe021_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu --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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:48:07,382 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:48:07,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:48:07,552 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:48:07,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:48:07,593 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:48:07,595 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:48:07,595 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:48:07,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:48:07,602 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:48:07,604 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:48:07,604 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:48:07,605 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:48:07,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:48:07,607 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:48:07,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:48:07,608 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:48:07,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:48:07,609 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:48:07,610 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:48:07,610 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:48:07,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:48:07,611 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:48:07,612 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:48:07,612 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:48:07,614 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:48:07,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:48:07,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:48:07,616 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:48:07,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:07,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:48:07,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:48:07,619 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:48:07,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:48:07,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:48:07,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:48:07,620 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:48:07,621 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:48:07,621 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_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2023-11-19 07:48:07,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:48:07,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:48:07,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:48:07,992 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:48:07,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:48:07,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-19 07:48:11,097 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:48:11,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:48:11,371 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2023-11-19 07:48:11,386 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/data/d5cc56ba7/3d897b7b52ef4cc990c50afbe5e9606c/FLAG607047a5d [2023-11-19 07:48:11,402 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/data/d5cc56ba7/3d897b7b52ef4cc990c50afbe5e9606c [2023-11-19 07:48:11,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:48:11,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:48:11,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:11,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:48:11,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:48:11,419 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:11,420 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d1b9e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11, skipping insertion in model container [2023-11-19 07:48:11,420 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:11,491 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:48:11,849 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:11,861 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:48:11,905 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:48:11,943 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:11,943 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:48:11,951 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:48:11,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11 WrapperNode [2023-11-19 07:48:11,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:48:11,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:11,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:48:11,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:48:11,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:11,976 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:11,999 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-19 07:48:12,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:48:12,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:48:12,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:48:12,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:48:12,010 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,013 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,025 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:48:12,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:48:12,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:48:12,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:48:12,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (1/1) ... [2023-11-19 07:48:12,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:48:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:12,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:48:12,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:48:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:48:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:48:12,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:48:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:48:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:48:12,125 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:48:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:48:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:48:12,126 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:48:12,126 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:48:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:48:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:48:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:48:12,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:48:12,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:48:12,130 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:48:12,269 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:48:12,271 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:48:12,507 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:48:12,517 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:48:12,518 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:48:12,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:12 BoogieIcfgContainer [2023-11-19 07:48:12,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:48:12,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:48:12,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:48:12,528 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:48:12,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:48:11" (1/3) ... [2023-11-19 07:48:12,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709388e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:12, skipping insertion in model container [2023-11-19 07:48:12,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:48:11" (2/3) ... [2023-11-19 07:48:12,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3709388e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:48:12, skipping insertion in model container [2023-11-19 07:48:12,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:12" (3/3) ... [2023-11-19 07:48:12,532 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2023-11-19 07:48:12,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:48:12,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-19 07:48:12,572 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:48:12,673 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:48:12,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 107 transitions, 226 flow [2023-11-19 07:48:12,763 INFO L124 PetriNetUnfolderBase]: 3/104 cut-off events. [2023-11-19 07:48:12,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:12,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 104 events. 3/104 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-11-19 07:48:12,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 107 transitions, 226 flow [2023-11-19 07:48:12,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 99 transitions, 207 flow [2023-11-19 07:48:12,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:48:12,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 99 transitions, 207 flow [2023-11-19 07:48:12,792 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 99 transitions, 207 flow [2023-11-19 07:48:12,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 99 transitions, 207 flow [2023-11-19 07:48:12,823 INFO L124 PetriNetUnfolderBase]: 3/99 cut-off events. [2023-11-19 07:48:12,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:12,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 99 events. 3/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-19 07:48:12,827 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-11-19 07:48:15,782 INFO L134 LiptonReduction]: Checked pairs total: 3261 [2023-11-19 07:48:15,782 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-11-19 07:48:15,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:48:15,805 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;@2f89e5d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:48:15,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-19 07:48:15,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:48:15,807 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:48:15,807 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:15,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:15,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:48:15,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:15,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:15,813 INFO L85 PathProgramCache]: Analyzing trace with hash 383, now seen corresponding path program 1 times [2023-11-19 07:48:15,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:15,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942243749] [2023-11-19 07:48:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:15,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942243749] [2023-11-19 07:48:15,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942243749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:15,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:15,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:48:15,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802196327] [2023-11-19 07:48:15,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:48:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:48:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:48:15,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 211 [2023-11-19 07:48:15,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:15,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:15,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 211 [2023-11-19 07:48:15,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:16,113 INFO L124 PetriNetUnfolderBase]: 368/578 cut-off events. [2023-11-19 07:48:16,114 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:48:16,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 578 events. 368/578 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2393 event pairs, 368 based on Foata normal form. 0/538 useless extension candidates. Maximal degree in co-relation 1171. Up to 574 conditions per place. [2023-11-19 07:48:16,123 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 17 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-19 07:48:16,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 81 flow [2023-11-19 07:48:16,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:48:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:48:16,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 224 transitions. [2023-11-19 07:48:16,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308056872037915 [2023-11-19 07:48:16,138 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 224 transitions. [2023-11-19 07:48:16,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 224 transitions. [2023-11-19 07:48:16,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:16,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 224 transitions. [2023-11-19 07:48:16,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 112.0) internal successors, (224), 2 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,152 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,154 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 224 transitions. [2023-11-19 07:48:16,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 81 flow [2023-11-19 07:48:16,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:16,159 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-11-19 07:48:16,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-19 07:48:16,165 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-19 07:48:16,165 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-11-19 07:48:16,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 100.5) internal successors, (201), 2 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:16,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:48:16,167 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:16,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1858127273, now seen corresponding path program 1 times [2023-11-19 07:48:16,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:16,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607461053] [2023-11-19 07:48:16,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:16,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607461053] [2023-11-19 07:48:16,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607461053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:16,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:16,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714157231] [2023-11-19 07:48:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:16,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:16,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:16,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 211 [2023-11-19 07:48:16,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:16,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:16,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 211 [2023-11-19 07:48:16,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:17,009 INFO L124 PetriNetUnfolderBase]: 827/1304 cut-off events. [2023-11-19 07:48:17,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:48:17,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 1304 events. 827/1304 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6454 event pairs, 214 based on Foata normal form. 0/1238 useless extension candidates. Maximal degree in co-relation 2626. Up to 775 conditions per place. [2023-11-19 07:48:17,024 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 38 selfloop transitions, 12 changer transitions 0/51 dead transitions. [2023-11-19 07:48:17,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 51 transitions, 210 flow [2023-11-19 07:48:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:17,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 507 transitions. [2023-11-19 07:48:17,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48056872037914694 [2023-11-19 07:48:17,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 507 transitions. [2023-11-19 07:48:17,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 507 transitions. [2023-11-19 07:48:17,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:17,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 507 transitions. [2023-11-19 07:48:17,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.4) internal successors, (507), 5 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,044 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 5 states and 507 transitions. [2023-11-19 07:48:17,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 51 transitions, 210 flow [2023-11-19 07:48:17,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:17,046 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 140 flow [2023-11-19 07:48:17,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-19 07:48:17,048 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-11-19 07:48:17,048 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 140 flow [2023-11-19 07:48:17,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:17,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:17,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:48:17,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:17,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1767369605, now seen corresponding path program 1 times [2023-11-19 07:48:17,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582740291] [2023-11-19 07:48:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:17,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:17,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:17,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582740291] [2023-11-19 07:48:17,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582740291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:17,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:17,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:17,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677205509] [2023-11-19 07:48:17,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:17,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:17,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:17,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:17,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:17,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 211 [2023-11-19 07:48:17,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:17,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:17,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 211 [2023-11-19 07:48:17,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,037 INFO L124 PetriNetUnfolderBase]: 550/912 cut-off events. [2023-11-19 07:48:18,037 INFO L125 PetriNetUnfolderBase]: For 727/732 co-relation queries the response was YES. [2023-11-19 07:48:18,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 912 events. 550/912 cut-off events. For 727/732 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4603 event pairs, 71 based on Foata normal form. 74/978 useless extension candidates. Maximal degree in co-relation 2633. Up to 687 conditions per place. [2023-11-19 07:48:18,047 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 27 selfloop transitions, 5 changer transitions 7/42 dead transitions. [2023-11-19 07:48:18,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 42 transitions, 250 flow [2023-11-19 07:48:18,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2023-11-19 07:48:18,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225908372827804 [2023-11-19 07:48:18,050 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 535 transitions. [2023-11-19 07:48:18,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 535 transitions. [2023-11-19 07:48:18,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 535 transitions. [2023-11-19 07:48:18,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,058 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 140 flow. Second operand 6 states and 535 transitions. [2023-11-19 07:48:18,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 42 transitions, 250 flow [2023-11-19 07:48:18,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:48:18,063 INFO L231 Difference]: Finished difference. Result has 39 places, 22 transitions, 102 flow [2023-11-19 07:48:18,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2023-11-19 07:48:18,064 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-19 07:48:18,064 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 22 transitions, 102 flow [2023-11-19 07:48:18,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.66666666666667) internal successors, (514), 6 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:48:18,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:18,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,066 INFO L85 PathProgramCache]: Analyzing trace with hash 523488071, now seen corresponding path program 1 times [2023-11-19 07:48:18,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457958398] [2023-11-19 07:48:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:18,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457958398] [2023-11-19 07:48:18,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457958398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:18,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:18,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:18,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18028394] [2023-11-19 07:48:18,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:18,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-19 07:48:18,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 22 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:18,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-19 07:48:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,373 INFO L124 PetriNetUnfolderBase]: 456/766 cut-off events. [2023-11-19 07:48:18,373 INFO L125 PetriNetUnfolderBase]: For 649/659 co-relation queries the response was YES. [2023-11-19 07:48:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 766 events. 456/766 cut-off events. For 649/659 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3706 event pairs, 131 based on Foata normal form. 49/804 useless extension candidates. Maximal degree in co-relation 2218. Up to 531 conditions per place. [2023-11-19 07:48:18,382 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 21 selfloop transitions, 3 changer transitions 12/39 dead transitions. [2023-11-19 07:48:18,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 234 flow [2023-11-19 07:48:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:18,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 513 transitions. [2023-11-19 07:48:18,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48625592417061614 [2023-11-19 07:48:18,385 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 513 transitions. [2023-11-19 07:48:18,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 513 transitions. [2023-11-19 07:48:18,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 513 transitions. [2023-11-19 07:48:18,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.6) internal successors, (513), 5 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,392 INFO L175 Difference]: Start difference. First operand has 39 places, 22 transitions, 102 flow. Second operand 5 states and 513 transitions. [2023-11-19 07:48:18,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 234 flow [2023-11-19 07:48:18,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 202 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-19 07:48:18,403 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 95 flow [2023-11-19 07:48:18,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2023-11-19 07:48:18,405 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-11-19 07:48:18,405 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 95 flow [2023-11-19 07:48:18,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:48:18,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:18,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1767336318, now seen corresponding path program 1 times [2023-11-19 07:48:18,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131080921] [2023-11-19 07:48:18,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:18,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:18,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:18,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131080921] [2023-11-19 07:48:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131080921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:18,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:18,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530110910] [2023-11-19 07:48:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:18,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:18,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 211 [2023-11-19 07:48:18,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:18,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 211 [2023-11-19 07:48:18,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:18,944 INFO L124 PetriNetUnfolderBase]: 784/1265 cut-off events. [2023-11-19 07:48:18,944 INFO L125 PetriNetUnfolderBase]: For 1208/1208 co-relation queries the response was YES. [2023-11-19 07:48:18,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3579 conditions, 1265 events. 784/1265 cut-off events. For 1208/1208 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5904 event pairs, 81 based on Foata normal form. 84/1349 useless extension candidates. Maximal degree in co-relation 3569. Up to 409 conditions per place. [2023-11-19 07:48:18,957 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 43 selfloop transitions, 13 changer transitions 31/87 dead transitions. [2023-11-19 07:48:18,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 87 transitions, 509 flow [2023-11-19 07:48:18,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:48:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 07:48:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 885 transitions. [2023-11-19 07:48:18,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660347551342812 [2023-11-19 07:48:18,962 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 885 transitions. [2023-11-19 07:48:18,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 885 transitions. [2023-11-19 07:48:18,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:18,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 885 transitions. [2023-11-19 07:48:18,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 98.33333333333333) internal successors, (885), 9 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,972 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 211.0) internal successors, (2110), 10 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,972 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 95 flow. Second operand 9 states and 885 transitions. [2023-11-19 07:48:18,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 87 transitions, 509 flow [2023-11-19 07:48:18,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 87 transitions, 481 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-19 07:48:18,981 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 215 flow [2023-11-19 07:48:18,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=215, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-11-19 07:48:18,982 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-11-19 07:48:18,983 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 215 flow [2023-11-19 07:48:18,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:18,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:18,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:48:18,984 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:18,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1047190014, now seen corresponding path program 1 times [2023-11-19 07:48:18,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:18,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061759770] [2023-11-19 07:48:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:19,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:19,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061759770] [2023-11-19 07:48:19,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061759770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:19,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492847980] [2023-11-19 07:48:19,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:19,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:19,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-11-19 07:48:19,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:19,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-11-19 07:48:19,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:19,372 INFO L124 PetriNetUnfolderBase]: 674/1115 cut-off events. [2023-11-19 07:48:19,372 INFO L125 PetriNetUnfolderBase]: For 3254/3275 co-relation queries the response was YES. [2023-11-19 07:48:19,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4051 conditions, 1115 events. 674/1115 cut-off events. For 3254/3275 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5380 event pairs, 145 based on Foata normal form. 71/1161 useless extension candidates. Maximal degree in co-relation 4037. Up to 329 conditions per place. [2023-11-19 07:48:19,383 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 24 selfloop transitions, 5 changer transitions 30/62 dead transitions. [2023-11-19 07:48:19,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 62 transitions, 499 flow [2023-11-19 07:48:19,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 610 transitions. [2023-11-19 07:48:19,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48183254344391785 [2023-11-19 07:48:19,387 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 610 transitions. [2023-11-19 07:48:19,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 610 transitions. [2023-11-19 07:48:19,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:19,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 610 transitions. [2023-11-19 07:48:19,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.66666666666667) internal successors, (610), 6 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,393 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,394 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 215 flow. Second operand 6 states and 610 transitions. [2023-11-19 07:48:19,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 62 transitions, 499 flow [2023-11-19 07:48:19,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 62 transitions, 461 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:19,410 INFO L231 Difference]: Finished difference. Result has 49 places, 23 transitions, 150 flow [2023-11-19 07:48:19,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=49, PETRI_TRANSITIONS=23} [2023-11-19 07:48:19,412 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 14 predicate places. [2023-11-19 07:48:19,412 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 23 transitions, 150 flow [2023-11-19 07:48:19,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:19,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:48:19,413 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:19,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 557977635, now seen corresponding path program 1 times [2023-11-19 07:48:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023168560] [2023-11-19 07:48:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023168560] [2023-11-19 07:48:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023168560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:48:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698415533] [2023-11-19 07:48:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:19,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-19 07:48:19,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 23 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:19,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-19 07:48:19,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:19,629 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2023-11-19 07:48:19,629 INFO L125 PetriNetUnfolderBase]: For 823/828 co-relation queries the response was YES. [2023-11-19 07:48:19,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269 conditions, 361 events. 193/361 cut-off events. For 823/828 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1459 event pairs, 54 based on Foata normal form. 12/364 useless extension candidates. Maximal degree in co-relation 1253. Up to 306 conditions per place. [2023-11-19 07:48:19,634 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 27 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-11-19 07:48:19,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 36 transitions, 282 flow [2023-11-19 07:48:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:19,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:48:19,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-11-19 07:48:19,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49921011058451814 [2023-11-19 07:48:19,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-11-19 07:48:19,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-11-19 07:48:19,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:19,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-11-19 07:48:19,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,641 INFO L175 Difference]: Start difference. First operand has 49 places, 23 transitions, 150 flow. Second operand 3 states and 316 transitions. [2023-11-19 07:48:19,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 36 transitions, 282 flow [2023-11-19 07:48:19,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 36 transitions, 219 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-11-19 07:48:19,645 INFO L231 Difference]: Finished difference. Result has 40 places, 26 transitions, 129 flow [2023-11-19 07:48:19,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=40, PETRI_TRANSITIONS=26} [2023-11-19 07:48:19,646 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-19 07:48:19,647 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 26 transitions, 129 flow [2023-11-19 07:48:19,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:19,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:48:19,648 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:19,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1405133381, now seen corresponding path program 1 times [2023-11-19 07:48:19,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102823707] [2023-11-19 07:48:19,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:19,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:19,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102823707] [2023-11-19 07:48:19,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102823707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:19,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:19,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:19,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502738833] [2023-11-19 07:48:19,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:19,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:48:19,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:19,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:48:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:48:19,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-19 07:48:19,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 26 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:19,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-19 07:48:19,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:19,882 INFO L124 PetriNetUnfolderBase]: 106/229 cut-off events. [2023-11-19 07:48:19,882 INFO L125 PetriNetUnfolderBase]: For 183/204 co-relation queries the response was YES. [2023-11-19 07:48:19,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 229 events. 106/229 cut-off events. For 183/204 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 861 event pairs, 20 based on Foata normal form. 34/255 useless extension candidates. Maximal degree in co-relation 772. Up to 100 conditions per place. [2023-11-19 07:48:19,885 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 34 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2023-11-19 07:48:19,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 307 flow [2023-11-19 07:48:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:48:19,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:48:19,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 420 transitions. [2023-11-19 07:48:19,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976303317535545 [2023-11-19 07:48:19,891 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 420 transitions. [2023-11-19 07:48:19,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 420 transitions. [2023-11-19 07:48:19,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:19,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 420 transitions. [2023-11-19 07:48:19,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,896 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,896 INFO L175 Difference]: Start difference. First operand has 40 places, 26 transitions, 129 flow. Second operand 4 states and 420 transitions. [2023-11-19 07:48:19,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 307 flow [2023-11-19 07:48:19,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:48:19,899 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 165 flow [2023-11-19 07:48:19,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-19 07:48:19,902 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-11-19 07:48:19,902 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 165 flow [2023-11-19 07:48:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:48:19,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:19,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -205297032, now seen corresponding path program 1 times [2023-11-19 07:48:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911333270] [2023-11-19 07:48:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:19,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911333270] [2023-11-19 07:48:20,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911333270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712705464] [2023-11-19 07:48:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:20,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-11-19 07:48:20,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:20,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-11-19 07:48:20,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:20,195 INFO L124 PetriNetUnfolderBase]: 84/181 cut-off events. [2023-11-19 07:48:20,195 INFO L125 PetriNetUnfolderBase]: For 339/374 co-relation queries the response was YES. [2023-11-19 07:48:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 181 events. 84/181 cut-off events. For 339/374 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 657 event pairs, 15 based on Foata normal form. 37/210 useless extension candidates. Maximal degree in co-relation 685. Up to 75 conditions per place. [2023-11-19 07:48:20,197 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 30 selfloop transitions, 10 changer transitions 1/46 dead transitions. [2023-11-19 07:48:20,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 331 flow [2023-11-19 07:48:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:48:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2023-11-19 07:48:20,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4890995260663507 [2023-11-19 07:48:20,201 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2023-11-19 07:48:20,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2023-11-19 07:48:20,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:20,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2023-11-19 07:48:20,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,207 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 165 flow. Second operand 5 states and 516 transitions. [2023-11-19 07:48:20,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 331 flow [2023-11-19 07:48:20,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 300 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-19 07:48:20,210 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 170 flow [2023-11-19 07:48:20,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-11-19 07:48:20,211 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-11-19 07:48:20,211 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 170 flow [2023-11-19 07:48:20,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:48:20,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:20,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:48:20,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-19 07:48:20,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:20,213 INFO L85 PathProgramCache]: Analyzing trace with hash -375946654, now seen corresponding path program 1 times [2023-11-19 07:48:20,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471212045] [2023-11-19 07:48:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:20,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:48:20,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471212045] [2023-11-19 07:48:20,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471212045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:20,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:20,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:48:20,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084040993] [2023-11-19 07:48:20,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:20,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:20,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 211 [2023-11-19 07:48:20,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:48:20,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 211 [2023-11-19 07:48:20,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:48:20,502 INFO L124 PetriNetUnfolderBase]: 107/225 cut-off events. [2023-11-19 07:48:20,502 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2023-11-19 07:48:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 225 events. 107/225 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 811 event pairs, 8 based on Foata normal form. 1/226 useless extension candidates. Maximal degree in co-relation 857. Up to 117 conditions per place. [2023-11-19 07:48:20,503 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-11-19 07:48:20,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 389 flow [2023-11-19 07:48:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:48:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:48:20,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 571 transitions. [2023-11-19 07:48:20,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510268562401264 [2023-11-19 07:48:20,507 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 571 transitions. [2023-11-19 07:48:20,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 571 transitions. [2023-11-19 07:48:20,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:48:20,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 571 transitions. [2023-11-19 07:48:20,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.16666666666667) internal successors, (571), 6 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) [2023-11-19 07:48:20,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 211.0) internal successors, (1477), 7 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,513 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 170 flow. Second operand 6 states and 571 transitions. [2023-11-19 07:48:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 389 flow [2023-11-19 07:48:20,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 348 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-19 07:48:20,516 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-11-19 07:48:20,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-11-19 07:48:20,517 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-19 07:48:20,518 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-11-19 07:48:20,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:48:20,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-19 07:48:20,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-19 07:48:20,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-19 07:48:20,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-19 07:48:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-19 07:48:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-19 07:48:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-19 07:48:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-19 07:48:20,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-19 07:48:20,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-19 07:48:20,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-19 07:48:20,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:48:20,523 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:20,527 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:48:20,527 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:48:20,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:48:20 BasicIcfg [2023-11-19 07:48:20,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:48:20,531 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:48:20,531 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:48:20,532 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:48:20,532 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:48:12" (3/4) ... [2023-11-19 07:48:20,534 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:48:20,538 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:48:20,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:48:20,539 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-19 07:48:20,543 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 07:48:20,543 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:48:20,544 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:48:20,544 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:48:20,623 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:48:20,623 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:48:20,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:48:20,624 INFO L158 Benchmark]: Toolchain (without parser) took 9218.19ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 123.7MB in the beginning and 82.3MB in the end (delta: 41.4MB). Peak memory consumption was 117.9MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,625 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:48:20,625 INFO L158 Benchmark]: CACSL2BoogieTranslator took 544.55ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 103.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,625 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.82ms. Allocated memory is still 165.7MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,626 INFO L158 Benchmark]: Boogie Preprocessor took 30.16ms. Allocated memory is still 165.7MB. Free memory was 101.0MB in the beginning and 99.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,626 INFO L158 Benchmark]: RCFGBuilder took 491.28ms. Allocated memory is still 165.7MB. Free memory was 99.4MB in the beginning and 85.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,627 INFO L158 Benchmark]: TraceAbstraction took 8006.02ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 84.3MB in the beginning and 86.5MB in the end (delta: -2.2MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,627 INFO L158 Benchmark]: Witness Printer took 92.31ms. Allocated memory is still 239.1MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:48:20,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 117.4MB. Free memory is still 86.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 544.55ms. Allocated memory is still 165.7MB. Free memory was 123.7MB in the beginning and 103.1MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.82ms. Allocated memory is still 165.7MB. Free memory was 103.1MB in the beginning and 101.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.16ms. Allocated memory is still 165.7MB. Free memory was 101.0MB in the beginning and 99.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.28ms. Allocated memory is still 165.7MB. Free memory was 99.4MB in the beginning and 85.1MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 8006.02ms. Allocated memory was 165.7MB in the beginning and 239.1MB in the end (delta: 73.4MB). Free memory was 84.3MB in the beginning and 86.5MB in the end (delta: -2.2MB). Peak memory consumption was 73.8MB. Max. memory is 16.1GB. * Witness Printer took 92.31ms. Allocated memory is still 239.1MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 106 PlacesBefore, 35 PlacesAfterwards, 99 TransitionsBefore, 26 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 2 ChoiceCompositions, 104 TotalNumberOfCompositions, 3261 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2036, independent: 1965, independent conditional: 0, independent unconditional: 1965, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1200, independent: 1177, independent conditional: 0, independent unconditional: 1177, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2036, independent: 788, independent conditional: 0, independent unconditional: 788, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 1200, unknown conditional: 0, unknown unconditional: 1200] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 43, Positive conditional cache size: 0, Positive unconditional cache size: 43, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 132 locations, 11 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 451 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 334 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 924 IncrementalHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 53 mSDtfsCounter, 924 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=215occurred in iteration=5, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 621 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:48:20,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1341544-4c5f-485b-9410-086806693612/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE