./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:54:09,581 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:54:09,658 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:54:09,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:54:09,663 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:54:09,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:54:09,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:54:09,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:54:09,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:54:09,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:54:09,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:54:09,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:54:09,725 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:54:09,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:54:09,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:54:09,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:54:09,729 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:54:09,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:54:09,730 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:54:09,730 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:54:09,730 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:54:09,731 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:54:09,731 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:54:09,732 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:54:09,732 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:54:09,732 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:54:09,733 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:54:09,733 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:54:09,734 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:54:09,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:09,735 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:54:09,735 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:54:09,735 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:54:09,735 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:54:09,736 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:54:09,736 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:54:09,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:54:09,736 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:54:09,736 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_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ab6224550afdc7bd147a853b67470808fdf25e83f86b697677572dc7a8a62dd [2023-11-06 21:54:10,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:54:10,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:54:10,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:54:10,070 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:54:10,071 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:54:10,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-06 21:54:13,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:54:13,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:54:13,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/sv-benchmarks/c/pthread-wmm/safe012_tso.i [2023-11-06 21:54:13,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/data/a33b8f206/d9db3297ff1347e2b9735379b22f1e62/FLAG7704c226e [2023-11-06 21:54:13,782 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/data/a33b8f206/d9db3297ff1347e2b9735379b22f1e62 [2023-11-06 21:54:13,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:54:13,789 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:54:13,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:13,794 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:54:13,801 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:54:13,802 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,803 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69968512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:13, skipping insertion in model container [2023-11-06 21:54:13,803 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:54:13" (1/1) ... [2023-11-06 21:54:13,849 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:54:14,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:14,361 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:54:14,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:54:14,488 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:54:14,489 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:54:14,498 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:54:14,499 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14 WrapperNode [2023-11-06 21:54:14,499 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:54:14,500 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:14,501 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:54:14,501 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:54:14,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,559 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,589 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-11-06 21:54:14,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:54:14,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:54:14,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:54:14,595 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:54:14,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,630 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:54:14,672 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:54:14,678 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:54:14,678 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:54:14,679 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (1/1) ... [2023-11-06 21:54:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:54:14,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:54:14,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:54:14,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:54:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:54:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:54:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 21:54:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 21:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 21:54:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 21:54:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 21:54:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 21:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:54:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:54:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:54:14,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:54:14,961 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:54:14,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:54:15,272 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:54:15,281 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:54:15,281 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 21:54:15,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:15 BoogieIcfgContainer [2023-11-06 21:54:15,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:54:15,288 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:54:15,288 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:54:15,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:54:15,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:54:13" (1/3) ... [2023-11-06 21:54:15,294 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afea07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:15, skipping insertion in model container [2023-11-06 21:54:15,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:54:14" (2/3) ... [2023-11-06 21:54:15,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afea07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:54:15, skipping insertion in model container [2023-11-06 21:54:15,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:15" (3/3) ... [2023-11-06 21:54:15,297 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-11-06 21:54:15,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:54:15,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 21:54:15,321 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:54:15,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 21:54:15,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 104 transitions, 220 flow [2023-11-06 21:54:15,535 INFO L124 PetriNetUnfolderBase]: 3/101 cut-off events. [2023-11-06 21:54:15,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:15,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 101 events. 3/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-06 21:54:15,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 104 transitions, 220 flow [2023-11-06 21:54:15,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 96 transitions, 201 flow [2023-11-06 21:54:15,555 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:54:15,569 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 96 transitions, 201 flow [2023-11-06 21:54:15,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 96 transitions, 201 flow [2023-11-06 21:54:15,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 96 transitions, 201 flow [2023-11-06 21:54:15,610 INFO L124 PetriNetUnfolderBase]: 3/96 cut-off events. [2023-11-06 21:54:15,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:15,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 96 events. 3/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-06 21:54:15,615 INFO L119 LiptonReduction]: Number of co-enabled transitions 1800 [2023-11-06 21:54:18,735 INFO L134 LiptonReduction]: Checked pairs total: 3421 [2023-11-06 21:54:18,735 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-11-06 21:54:18,753 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:54:18,760 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;@69675eab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:54:18,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 21:54:18,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:54:18,763 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:54:18,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:18,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:18,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:54:18,764 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)] === [2023-11-06 21:54:18,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:18,770 INFO L85 PathProgramCache]: Analyzing trace with hash 369, now seen corresponding path program 1 times [2023-11-06 21:54:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:18,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404822488] [2023-11-06 21:54:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:18,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:18,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404822488] [2023-11-06 21:54:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404822488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:54:18,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724665313] [2023-11-06 21:54:18,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:18,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:54:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:54:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:54:18,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 204 [2023-11-06 21:54:18,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:18,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:18,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 204 [2023-11-06 21:54:18,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:19,157 INFO L124 PetriNetUnfolderBase]: 272/455 cut-off events. [2023-11-06 21:54:19,157 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:54:19,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 455 events. 272/455 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1974 event pairs, 272 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 907. Up to 433 conditions per place. [2023-11-06 21:54:19,164 INFO L140 encePairwiseOnDemand]: 197/204 looper letters, 16 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-11-06 21:54:19,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 19 transitions, 79 flow [2023-11-06 21:54:19,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:54:19,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:54:19,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 217 transitions. [2023-11-06 21:54:19,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318627450980392 [2023-11-06 21:54:19,180 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 217 transitions. [2023-11-06 21:54:19,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 217 transitions. [2023-11-06 21:54:19,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:19,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 217 transitions. [2023-11-06 21:54:19,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 108.5) internal successors, (217), 2 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,195 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,197 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 2 states and 217 transitions. [2023-11-06 21:54:19,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 19 transitions, 79 flow [2023-11-06 21:54:19,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:19,203 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 44 flow [2023-11-06 21:54:19,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, 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} [2023-11-06 21:54:19,208 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-11-06 21:54:19,209 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 44 flow [2023-11-06 21:54:19,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 97.5) internal successors, (195), 2 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:19,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:19,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:19,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:54:19,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:19,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:19,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1237263724, now seen corresponding path program 1 times [2023-11-06 21:54:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253804069] [2023-11-06 21:54:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:20,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:20,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:20,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253804069] [2023-11-06 21:54:20,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253804069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:20,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:20,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:20,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036802809] [2023-11-06 21:54:20,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:20,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:20,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:20,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:20,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 204 [2023-11-06 21:54:20,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 44 flow. Second operand has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:20,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 204 [2023-11-06 21:54:20,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:20,551 INFO L124 PetriNetUnfolderBase]: 372/652 cut-off events. [2023-11-06 21:54:20,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:54:20,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 652 events. 372/652 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3340 event pairs, 126 based on Foata normal form. 0/631 useless extension candidates. Maximal degree in co-relation 1291. Up to 275 conditions per place. [2023-11-06 21:54:20,563 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 34 selfloop transitions, 6 changer transitions 0/43 dead transitions. [2023-11-06 21:54:20,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 178 flow [2023-11-06 21:54:20,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:20,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 528 transitions. [2023-11-06 21:54:20,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137254901960786 [2023-11-06 21:54:20,570 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 528 transitions. [2023-11-06 21:54:20,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 528 transitions. [2023-11-06 21:54:20,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:20,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 528 transitions. [2023-11-06 21:54:20,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,579 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,579 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 44 flow. Second operand 6 states and 528 transitions. [2023-11-06 21:54:20,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 178 flow [2023-11-06 21:54:20,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:20,586 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 81 flow [2023-11-06 21:54:20,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2023-11-06 21:54:20,588 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-11-06 21:54:20,589 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 81 flow [2023-11-06 21:54:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.5) internal successors, (495), 6 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:20,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:20,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:54:20,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:20,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:20,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1237263706, now seen corresponding path program 1 times [2023-11-06 21:54:20,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:20,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307833770] [2023-11-06 21:54:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:20,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:20,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307833770] [2023-11-06 21:54:20,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307833770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:20,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080518588] [2023-11-06 21:54:20,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:20,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:20,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:20,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:20,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 204 [2023-11-06 21:54:20,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:20,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:20,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 204 [2023-11-06 21:54:20,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:20,997 INFO L124 PetriNetUnfolderBase]: 586/986 cut-off events. [2023-11-06 21:54:20,997 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2023-11-06 21:54:21,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 986 events. 586/986 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5138 event pairs, 389 based on Foata normal form. 36/1018 useless extension candidates. Maximal degree in co-relation 2144. Up to 839 conditions per place. [2023-11-06 21:54:21,007 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 23 selfloop transitions, 5 changer transitions 12/42 dead transitions. [2023-11-06 21:54:21,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 215 flow [2023-11-06 21:54:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:21,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 475 transitions. [2023-11-06 21:54:21,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46568627450980393 [2023-11-06 21:54:21,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 475 transitions. [2023-11-06 21:54:21,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 475 transitions. [2023-11-06 21:54:21,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:21,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 475 transitions. [2023-11-06 21:54:21,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,017 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,017 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 81 flow. Second operand 5 states and 475 transitions. [2023-11-06 21:54:21,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 215 flow [2023-11-06 21:54:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 42 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:21,020 INFO L231 Difference]: Finished difference. Result has 42 places, 25 transitions, 115 flow [2023-11-06 21:54:21,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=42, PETRI_TRANSITIONS=25} [2023-11-06 21:54:21,022 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-11-06 21:54:21,022 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 25 transitions, 115 flow [2023-11-06 21:54:21,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:21,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:21,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:54:21,023 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)] === [2023-11-06 21:54:21,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1579337620, now seen corresponding path program 1 times [2023-11-06 21:54:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:21,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497029079] [2023-11-06 21:54:21,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:21,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497029079] [2023-11-06 21:54:21,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497029079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:21,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:21,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:21,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826678487] [2023-11-06 21:54:21,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:21,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:21,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:21,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 204 [2023-11-06 21:54:21,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 25 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:21,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 204 [2023-11-06 21:54:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:21,454 INFO L124 PetriNetUnfolderBase]: 550/956 cut-off events. [2023-11-06 21:54:21,454 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-11-06 21:54:21,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2443 conditions, 956 events. 550/956 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 5039 event pairs, 140 based on Foata normal form. 54/1006 useless extension candidates. Maximal degree in co-relation 2432. Up to 563 conditions per place. [2023-11-06 21:54:21,466 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 34 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-06 21:54:21,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 247 flow [2023-11-06 21:54:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:21,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:21,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 473 transitions. [2023-11-06 21:54:21,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46372549019607845 [2023-11-06 21:54:21,469 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 473 transitions. [2023-11-06 21:54:21,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 473 transitions. [2023-11-06 21:54:21,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:21,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 473 transitions. [2023-11-06 21:54:21,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,475 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,475 INFO L175 Difference]: Start difference. First operand has 42 places, 25 transitions, 115 flow. Second operand 5 states and 473 transitions. [2023-11-06 21:54:21,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 247 flow [2023-11-06 21:54:21,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 236 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 21:54:21,486 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 158 flow [2023-11-06 21:54:21,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-06 21:54:21,488 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-11-06 21:54:21,488 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 158 flow [2023-11-06 21:54:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:21,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:21,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:21,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:54:21,490 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:21,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1714826987, now seen corresponding path program 1 times [2023-11-06 21:54:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493203692] [2023-11-06 21:54:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493203692] [2023-11-06 21:54:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493203692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683539269] [2023-11-06 21:54:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:21,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:21,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:22,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 204 [2023-11-06 21:54:22,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:22,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 204 [2023-11-06 21:54:22,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:22,574 INFO L124 PetriNetUnfolderBase]: 689/1140 cut-off events. [2023-11-06 21:54:22,575 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2023-11-06 21:54:22,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 1140 events. 689/1140 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6210 event pairs, 343 based on Foata normal form. 42/1182 useless extension candidates. Maximal degree in co-relation 3241. Up to 392 conditions per place. [2023-11-06 21:54:22,589 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 45 selfloop transitions, 8 changer transitions 4/59 dead transitions. [2023-11-06 21:54:22,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 59 transitions, 394 flow [2023-11-06 21:54:22,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 520 transitions. [2023-11-06 21:54:22,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42483660130718953 [2023-11-06 21:54:22,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 520 transitions. [2023-11-06 21:54:22,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 520 transitions. [2023-11-06 21:54:22,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:22,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 520 transitions. [2023-11-06 21:54:22,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 86.66666666666667) internal successors, (520), 6 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,599 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,599 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 158 flow. Second operand 6 states and 520 transitions. [2023-11-06 21:54:22,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 59 transitions, 394 flow [2023-11-06 21:54:22,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 59 transitions, 384 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-11-06 21:54:22,608 INFO L231 Difference]: Finished difference. Result has 52 places, 30 transitions, 189 flow [2023-11-06 21:54:22,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=30} [2023-11-06 21:54:22,609 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-11-06 21:54:22,609 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 30 transitions, 189 flow [2023-11-06 21:54:22,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.57142857142857) internal successors, (564), 7 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:22,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:22,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:22,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:54:22,611 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:22,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:22,612 INFO L85 PathProgramCache]: Analyzing trace with hash -111388249, now seen corresponding path program 2 times [2023-11-06 21:54:22,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:22,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031478240] [2023-11-06 21:54:22,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:22,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031478240] [2023-11-06 21:54:23,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031478240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 21:54:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649929628] [2023-11-06 21:54:23,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:54:23,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:54:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:54:23,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 204 [2023-11-06 21:54:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 30 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 204 [2023-11-06 21:54:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:23,683 INFO L124 PetriNetUnfolderBase]: 625/1050 cut-off events. [2023-11-06 21:54:23,684 INFO L125 PetriNetUnfolderBase]: For 1372/1372 co-relation queries the response was YES. [2023-11-06 21:54:23,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1050 events. 625/1050 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5832 event pairs, 207 based on Foata normal form. 42/1092 useless extension candidates. Maximal degree in co-relation 3003. Up to 713 conditions per place. [2023-11-06 21:54:23,694 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 34 selfloop transitions, 7 changer transitions 4/47 dead transitions. [2023-11-06 21:54:23,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 319 flow [2023-11-06 21:54:23,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:54:23,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:54:23,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2023-11-06 21:54:23,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40896358543417366 [2023-11-06 21:54:23,697 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2023-11-06 21:54:23,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2023-11-06 21:54:23,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:23,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2023-11-06 21:54:23,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 204.0) internal successors, (1632), 8 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,703 INFO L175 Difference]: Start difference. First operand has 52 places, 30 transitions, 189 flow. Second operand 7 states and 584 transitions. [2023-11-06 21:54:23,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 319 flow [2023-11-06 21:54:23,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 295 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-11-06 21:54:23,709 INFO L231 Difference]: Finished difference. Result has 50 places, 25 transitions, 137 flow [2023-11-06 21:54:23,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=25} [2023-11-06 21:54:23,710 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-06 21:54:23,710 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 25 transitions, 137 flow [2023-11-06 21:54:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:23,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:23,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:54:23,711 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)] === [2023-11-06 21:54:23,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:23,712 INFO L85 PathProgramCache]: Analyzing trace with hash -299566229, now seen corresponding path program 1 times [2023-11-06 21:54:23,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:23,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536228396] [2023-11-06 21:54:23,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:23,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:23,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:23,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536228396] [2023-11-06 21:54:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536228396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210169447] [2023-11-06 21:54:23,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:23,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:23,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:23,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 204 [2023-11-06 21:54:23,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 25 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:23,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:23,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 204 [2023-11-06 21:54:23,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,094 INFO L124 PetriNetUnfolderBase]: 581/1020 cut-off events. [2023-11-06 21:54:24,095 INFO L125 PetriNetUnfolderBase]: For 726/726 co-relation queries the response was YES. [2023-11-06 21:54:24,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 1020 events. 581/1020 cut-off events. For 726/726 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5560 event pairs, 429 based on Foata normal form. 24/1043 useless extension candidates. Maximal degree in co-relation 2645. Up to 858 conditions per place. [2023-11-06 21:54:24,104 INFO L140 encePairwiseOnDemand]: 200/204 looper letters, 24 selfloop transitions, 5 changer transitions 10/41 dead transitions. [2023-11-06 21:54:24,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 262 flow [2023-11-06 21:54:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:24,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 472 transitions. [2023-11-06 21:54:24,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627450980392157 [2023-11-06 21:54:24,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 472 transitions. [2023-11-06 21:54:24,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 472 transitions. [2023-11-06 21:54:24,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 472 transitions. [2023-11-06 21:54:24,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,115 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,115 INFO L175 Difference]: Start difference. First operand has 50 places, 25 transitions, 137 flow. Second operand 5 states and 472 transitions. [2023-11-06 21:54:24,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 262 flow [2023-11-06 21:54:24,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 235 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-06 21:54:24,124 INFO L231 Difference]: Finished difference. Result has 48 places, 25 transitions, 133 flow [2023-11-06 21:54:24,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=48, PETRI_TRANSITIONS=25} [2023-11-06 21:54:24,125 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-11-06 21:54:24,126 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 25 transitions, 133 flow [2023-11-06 21:54:24,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:24,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:54:24,127 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)] === [2023-11-06 21:54:24,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,127 INFO L85 PathProgramCache]: Analyzing trace with hash -111422677, now seen corresponding path program 1 times [2023-11-06 21:54:24,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363794369] [2023-11-06 21:54:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363794369] [2023-11-06 21:54:24,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363794369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:24,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637476043] [2023-11-06 21:54:24,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:24,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 204 [2023-11-06 21:54:24,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 25 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 204 [2023-11-06 21:54:24,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,495 INFO L124 PetriNetUnfolderBase]: 468/809 cut-off events. [2023-11-06 21:54:24,495 INFO L125 PetriNetUnfolderBase]: For 697/697 co-relation queries the response was YES. [2023-11-06 21:54:24,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2172 conditions, 809 events. 468/809 cut-off events. For 697/697 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4300 event pairs, 161 based on Foata normal form. 54/857 useless extension candidates. Maximal degree in co-relation 2160. Up to 284 conditions per place. [2023-11-06 21:54:24,500 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 20 selfloop transitions, 3 changer transitions 20/45 dead transitions. [2023-11-06 21:54:24,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 279 flow [2023-11-06 21:54:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:24,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 572 transitions. [2023-11-06 21:54:24,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2023-11-06 21:54:24,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 572 transitions. [2023-11-06 21:54:24,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 572 transitions. [2023-11-06 21:54:24,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 572 transitions. [2023-11-06 21:54:24,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.33333333333333) internal successors, (572), 6 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,511 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,511 INFO L175 Difference]: Start difference. First operand has 48 places, 25 transitions, 133 flow. Second operand 6 states and 572 transitions. [2023-11-06 21:54:24,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 279 flow [2023-11-06 21:54:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 261 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 21:54:24,517 INFO L231 Difference]: Finished difference. Result has 50 places, 18 transitions, 91 flow [2023-11-06 21:54:24,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=50, PETRI_TRANSITIONS=18} [2023-11-06 21:54:24,518 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-11-06 21:54:24,518 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 18 transitions, 91 flow [2023-11-06 21:54:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:24,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:54:24,520 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)] === [2023-11-06 21:54:24,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -122886261, now seen corresponding path program 1 times [2023-11-06 21:54:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979639524] [2023-11-06 21:54:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979639524] [2023-11-06 21:54:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979639524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:24,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:24,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:24,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248892080] [2023-11-06 21:54:24,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:54:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:54:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:54:24,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-11-06 21:54:24,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 18 transitions, 91 flow. Second operand has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:24,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-11-06 21:54:24,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:24,862 INFO L124 PetriNetUnfolderBase]: 239/410 cut-off events. [2023-11-06 21:54:24,862 INFO L125 PetriNetUnfolderBase]: For 705/705 co-relation queries the response was YES. [2023-11-06 21:54:24,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 410 events. 239/410 cut-off events. For 705/705 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1554 event pairs, 87 based on Foata normal form. 24/434 useless extension candidates. Maximal degree in co-relation 1222. Up to 141 conditions per place. [2023-11-06 21:54:24,866 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 19 selfloop transitions, 3 changer transitions 20/43 dead transitions. [2023-11-06 21:54:24,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 273 flow [2023-11-06 21:54:24,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 554 transitions. [2023-11-06 21:54:24,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4526143790849673 [2023-11-06 21:54:24,869 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 554 transitions. [2023-11-06 21:54:24,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 554 transitions. [2023-11-06 21:54:24,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:24,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 554 transitions. [2023-11-06 21:54:24,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.33333333333333) internal successors, (554), 6 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,876 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,876 INFO L175 Difference]: Start difference. First operand has 50 places, 18 transitions, 91 flow. Second operand 6 states and 554 transitions. [2023-11-06 21:54:24,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 273 flow [2023-11-06 21:54:24,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 43 transitions, 196 flow, removed 17 selfloop flow, removed 16 redundant places. [2023-11-06 21:54:24,880 INFO L231 Difference]: Finished difference. Result has 39 places, 18 transitions, 67 flow [2023-11-06 21:54:24,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=67, PETRI_PLACES=39, PETRI_TRANSITIONS=18} [2023-11-06 21:54:24,881 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-06 21:54:24,882 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 18 transitions, 67 flow [2023-11-06 21:54:24,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 86.83333333333333) internal successors, (521), 6 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:24,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:24,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:24,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:54:24,883 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)] === [2023-11-06 21:54:24,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1982159624, now seen corresponding path program 1 times [2023-11-06 21:54:24,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:24,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344169279] [2023-11-06 21:54:24,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:24,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:25,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344169279] [2023-11-06 21:54:25,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344169279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:54:25,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636777144] [2023-11-06 21:54:25,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:54:25,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:54:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:54:25,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 204 [2023-11-06 21:54:25,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 18 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 204 [2023-11-06 21:54:25,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,090 INFO L124 PetriNetUnfolderBase]: 47/103 cut-off events. [2023-11-06 21:54:25,090 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 21:54:25,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 103 events. 47/103 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 277 event pairs, 23 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 277. Up to 84 conditions per place. [2023-11-06 21:54:25,092 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 18 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-11-06 21:54:25,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 25 transitions, 134 flow [2023-11-06 21:54:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:54:25,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:54:25,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-06 21:54:25,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934640522875817 [2023-11-06 21:54:25,095 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-06 21:54:25,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-06 21:54:25,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-06 21:54:25,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,099 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,100 INFO L175 Difference]: Start difference. First operand has 39 places, 18 transitions, 67 flow. Second operand 3 states and 302 transitions. [2023-11-06 21:54:25,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 25 transitions, 134 flow [2023-11-06 21:54:25,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 25 transitions, 116 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-06 21:54:25,102 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 77 flow [2023-11-06 21:54:25,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-11-06 21:54:25,103 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-11-06 21:54:25,103 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 77 flow [2023-11-06 21:54:25,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:25,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:54:25,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:25,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1844587010, now seen corresponding path program 1 times [2023-11-06 21:54:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737300070] [2023-11-06 21:54:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:25,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737300070] [2023-11-06 21:54:25,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737300070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:54:25,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486884009] [2023-11-06 21:54:25,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:54:25,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:54:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:54:25,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 204 [2023-11-06 21:54:25,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 204 [2023-11-06 21:54:25,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,302 INFO L124 PetriNetUnfolderBase]: 24/66 cut-off events. [2023-11-06 21:54:25,302 INFO L125 PetriNetUnfolderBase]: For 24/28 co-relation queries the response was YES. [2023-11-06 21:54:25,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 66 events. 24/66 cut-off events. For 24/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 5 based on Foata normal form. 8/73 useless extension candidates. Maximal degree in co-relation 202. Up to 36 conditions per place. [2023-11-06 21:54:25,303 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 19 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2023-11-06 21:54:25,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 161 flow [2023-11-06 21:54:25,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:54:25,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:54:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 399 transitions. [2023-11-06 21:54:25,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4889705882352941 [2023-11-06 21:54:25,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 399 transitions. [2023-11-06 21:54:25,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 399 transitions. [2023-11-06 21:54:25,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 399 transitions. [2023-11-06 21:54:25,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,312 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,312 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 77 flow. Second operand 4 states and 399 transitions. [2023-11-06 21:54:25,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 161 flow [2023-11-06 21:54:25,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:54:25,314 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 113 flow [2023-11-06 21:54:25,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-11-06 21:54:25,315 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2023-11-06 21:54:25,315 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 113 flow [2023-11-06 21:54:25,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:25,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:54:25,317 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:25,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash 200657024, now seen corresponding path program 1 times [2023-11-06 21:54:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:25,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439324838] [2023-11-06 21:54:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:25,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439324838] [2023-11-06 21:54:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439324838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100400571] [2023-11-06 21:54:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:25,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 204 [2023-11-06 21:54:25,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 204 [2023-11-06 21:54:25,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,519 INFO L124 PetriNetUnfolderBase]: 14/46 cut-off events. [2023-11-06 21:54:25,520 INFO L125 PetriNetUnfolderBase]: For 69/78 co-relation queries the response was YES. [2023-11-06 21:54:25,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 46 events. 14/46 cut-off events. For 69/78 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 2 based on Foata normal form. 10/55 useless extension candidates. Maximal degree in co-relation 164. Up to 21 conditions per place. [2023-11-06 21:54:25,521 INFO L140 encePairwiseOnDemand]: 199/204 looper letters, 16 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2023-11-06 21:54:25,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 185 flow [2023-11-06 21:54:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:54:25,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:54:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2023-11-06 21:54:25,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823529411764706 [2023-11-06 21:54:25,524 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2023-11-06 21:54:25,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2023-11-06 21:54:25,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2023-11-06 21:54:25,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,531 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,531 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 113 flow. Second operand 5 states and 492 transitions. [2023-11-06 21:54:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 185 flow [2023-11-06 21:54:25,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 29 transitions, 165 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:25,533 INFO L231 Difference]: Finished difference. Result has 39 places, 24 transitions, 123 flow [2023-11-06 21:54:25,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2023-11-06 21:54:25,534 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-11-06 21:54:25,534 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 123 flow [2023-11-06 21:54:25,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:54:25,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:54:25,536 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 21:54:25,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:54:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2019267351, now seen corresponding path program 1 times [2023-11-06 21:54:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:54:25,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579709064] [2023-11-06 21:54:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:54:25,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:54:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:54:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:54:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:54:25,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579709064] [2023-11-06 21:54:25,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579709064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:54:25,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:54:25,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:54:25,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363415972] [2023-11-06 21:54:25,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:54:25,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:54:25,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:54:25,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:54:25,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:54:25,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 204 [2023-11-06 21:54:25,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:54:25,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 204 [2023-11-06 21:54:25,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:54:25,805 INFO L124 PetriNetUnfolderBase]: 18/53 cut-off events. [2023-11-06 21:54:25,805 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-06 21:54:25,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 53 events. 18/53 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 3 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 193. Up to 27 conditions per place. [2023-11-06 21:54:25,806 INFO L140 encePairwiseOnDemand]: 198/204 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-11-06 21:54:25,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 212 flow [2023-11-06 21:54:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:54:25,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:54:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 530 transitions. [2023-11-06 21:54:25,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43300653594771243 [2023-11-06 21:54:25,809 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 530 transitions. [2023-11-06 21:54:25,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 530 transitions. [2023-11-06 21:54:25,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:54:25,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 530 transitions. [2023-11-06 21:54:25,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.33333333333333) internal successors, (530), 6 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,815 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,815 INFO L175 Difference]: Start difference. First operand has 39 places, 24 transitions, 123 flow. Second operand 6 states and 530 transitions. [2023-11-06 21:54:25,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 212 flow [2023-11-06 21:54:25,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 180 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 21:54:25,817 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-11-06 21:54:25,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-11-06 21:54:25,818 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-11-06 21:54:25,818 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-11-06 21:54:25,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:54:25,821 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-06 21:54:25,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-06 21:54:25,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-06 21:54:25,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-06 21:54:25,822 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-06 21:54:25,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-06 21:54:25,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-06 21:54:25,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-06 21:54:25,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-06 21:54:25,823 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-06 21:54:25,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-06 21:54:25,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:54:25,824 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:54:25,828 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:54:25,828 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:54:25,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:54:25 BasicIcfg [2023-11-06 21:54:25,832 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:54:25,832 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:54:25,833 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:54:25,833 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:54:25,833 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:54:15" (3/4) ... [2023-11-06 21:54:25,835 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:54:25,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 21:54:25,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 21:54:25,840 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 21:54:25,845 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-06 21:54:25,846 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:54:25,846 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:54:25,846 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:54:25,896 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:54:25,897 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:54:25,897 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:54:25,898 INFO L158 Benchmark]: Toolchain (without parser) took 12111.66ms. Allocated memory was 155.2MB in the beginning and 249.6MB in the end (delta: 94.4MB). Free memory was 108.0MB in the beginning and 200.9MB in the end (delta: -93.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,898 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:25,898 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.66ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 87.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,899 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.13ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,899 INFO L158 Benchmark]: Boogie Preprocessor took 77.25ms. Allocated memory is still 155.2MB. Free memory was 85.0MB in the beginning and 84.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:54:25,900 INFO L158 Benchmark]: RCFGBuilder took 613.44ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 83.5MB in the beginning and 171.4MB in the end (delta: -87.9MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,900 INFO L158 Benchmark]: TraceAbstraction took 10543.93ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 171.4MB in the beginning and 204.1MB in the end (delta: -32.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,901 INFO L158 Benchmark]: Witness Printer took 64.67ms. Allocated memory is still 249.6MB. Free memory was 204.1MB in the beginning and 200.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:54:25,903 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 155.2MB. Free memory is still 102.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.66ms. Allocated memory is still 155.2MB. Free memory was 107.4MB in the beginning and 87.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.13ms. Allocated memory is still 155.2MB. Free memory was 87.2MB in the beginning and 85.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.25ms. Allocated memory is still 155.2MB. Free memory was 85.0MB in the beginning and 84.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 613.44ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 83.5MB in the beginning and 171.4MB in the end (delta: -87.9MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10543.93ms. Allocated memory was 207.6MB in the beginning and 249.6MB in the end (delta: 41.9MB). Free memory was 171.4MB in the beginning and 204.1MB in the end (delta: -32.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Witness Printer took 64.67ms. Allocated memory is still 249.6MB. Free memory was 204.1MB in the beginning and 200.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 103 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 26 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 5 FixpointIterations, 29 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 100 TotalNumberOfCompositions, 3421 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1898, independent: 1816, independent conditional: 0, independent unconditional: 1816, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 982, independent: 960, independent conditional: 0, independent unconditional: 960, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1898, independent: 856, independent conditional: 0, independent unconditional: 856, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 982, unknown conditional: 0, unknown unconditional: 982] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, 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: 778]: 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, 126 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: 10.4s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 782 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 531 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1847 IncrementalHoareTripleChecker+Invalid, 1910 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 118 mSDtfsCounter, 1847 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=5, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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! [2023-11-06 21:54:25,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8db2cf8f-e914-434f-b5ab-2684a1fec89a/bin/uautomizer-verify-WvqO1wxjHP/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