./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.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_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/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_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/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_20c67080-0dd0-4092-93ac-e090b5bcc4a9/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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:50,912 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:51,031 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:58:51,039 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:51,040 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:51,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:51,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:51,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:51,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:51,088 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:51,090 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:51,090 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:51,091 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:51,093 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:51,094 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:51,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:51,095 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:51,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:51,096 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:58:51,096 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:58:51,097 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:58:51,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:51,098 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:58:51,099 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:58:51,099 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:51,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:51,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:51,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:51,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:51,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:51,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:51,105 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:51,105 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:51,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:51,106 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:51,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:51,107 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:51,107 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:51,107 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_20c67080-0dd0-4092-93ac-e090b5bcc4a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2023-11-06 21:58:51,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:51,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:51,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:51,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:51,519 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:51,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-06 21:58:54,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:54,886 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:54,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-06 21:58:54,906 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/data/fbe303c83/3afd35c0314e403686f0dee06eda1c4a/FLAG30bc39a6f [2023-11-06 21:58:54,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/data/fbe303c83/3afd35c0314e403686f0dee06eda1c4a [2023-11-06 21:58:54,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:54,935 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:54,937 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:54,937 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:54,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:54,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:54" (1/1) ... [2023-11-06 21:58:54,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f6e911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:54, skipping insertion in model container [2023-11-06 21:58:54,945 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:54" (1/1) ... [2023-11-06 21:58:54,997 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:55,195 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:58:55,381 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:55,400 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:55,420 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-06 21:58:55,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:55,513 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:58:55,514 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:58:55,514 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 21:58:55,522 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:55,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55 WrapperNode [2023-11-06 21:58:55,523 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:55,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:55,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:55,524 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:55,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,597 INFO L138 Inliner]: procedures = 171, calls = 77, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 179 [2023-11-06 21:58:55,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:55,598 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:55,598 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:55,599 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:55,609 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,613 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,613 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:55,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:55,635 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:55,636 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:55,637 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (1/1) ... [2023-11-06 21:58:55,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:55,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:55,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:58:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-06 21:58:55,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-06 21:58:55,765 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-06 21:58:55,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-06 21:58:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:58:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 21:58:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:58:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:58:55,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:58:55,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:58:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 21:58:55,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:55,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:55,772 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 21:58:55,993 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:55,995 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:56,241 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:56,250 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:56,250 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-06 21:58:56,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:56 BoogieIcfgContainer [2023-11-06 21:58:56,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:56,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:56,261 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:56,264 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:56,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:54" (1/3) ... [2023-11-06 21:58:56,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e10474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:56, skipping insertion in model container [2023-11-06 21:58:56,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:55" (2/3) ... [2023-11-06 21:58:56,267 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e10474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:56, skipping insertion in model container [2023-11-06 21:58:56,268 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:56" (3/3) ... [2023-11-06 21:58:56,269 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-11-06 21:58:56,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:56,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-06 21:58:56,292 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:58:56,395 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 21:58:56,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 135 transitions, 284 flow [2023-11-06 21:58:56,593 INFO L124 PetriNetUnfolderBase]: 22/133 cut-off events. [2023-11-06 21:58:56,594 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:58:56,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 22/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 228 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 97. Up to 3 conditions per place. [2023-11-06 21:58:56,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 135 transitions, 284 flow [2023-11-06 21:58:56,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 128 transitions, 268 flow [2023-11-06 21:58:56,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:58:56,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 128 transitions, 268 flow [2023-11-06 21:58:56,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 128 transitions, 268 flow [2023-11-06 21:58:56,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 128 transitions, 268 flow [2023-11-06 21:58:56,662 INFO L124 PetriNetUnfolderBase]: 22/128 cut-off events. [2023-11-06 21:58:56,662 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 21:58:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 128 events. 22/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 226 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 97. Up to 3 conditions per place. [2023-11-06 21:58:56,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 5248 [2023-11-06 21:58:59,721 INFO L134 LiptonReduction]: Checked pairs total: 12577 [2023-11-06 21:58:59,722 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 21:58:59,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:59,766 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;@512bf00e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:59,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-06 21:58:59,768 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:59,769 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 21:58:59,769 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:58:59,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:59,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 21:58:59,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:58:59,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:59,776 INFO L85 PathProgramCache]: Analyzing trace with hash 590, now seen corresponding path program 1 times [2023-11-06 21:58:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203306444] [2023-11-06 21:58:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:59,944 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 21:58:59,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:59,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203306444] [2023-11-06 21:58:59,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203306444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:59,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:59,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 21:58:59,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781893273] [2023-11-06 21:58:59,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:59,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:58:59,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:58:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:59:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 243 [2023-11-06 21:59:00,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 62 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 21:59:00,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:00,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 243 [2023-11-06 21:59:00,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:00,431 INFO L124 PetriNetUnfolderBase]: 1536/2415 cut-off events. [2023-11-06 21:59:00,431 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-06 21:59:00,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 2415 events. 1536/2415 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12025 event pairs, 734 based on Foata normal form. 0/1341 useless extension candidates. Maximal degree in co-relation 4245. Up to 2080 conditions per place. [2023-11-06 21:59:00,459 INFO L140 encePairwiseOnDemand]: 237/243 looper letters, 39 selfloop transitions, 0 changer transitions 0/53 dead transitions. [2023-11-06 21:59:00,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 53 transitions, 196 flow [2023-11-06 21:59:00,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:59:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 21:59:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 283 transitions. [2023-11-06 21:59:00,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823045267489712 [2023-11-06 21:59:00,483 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 283 transitions. [2023-11-06 21:59:00,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 283 transitions. [2023-11-06 21:59:00,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:00,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 283 transitions. [2023-11-06 21:59:00,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states 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 21:59:00,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 21:59:00,503 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 21:59:00,506 INFO L175 Difference]: Start difference. First operand has 55 places, 62 transitions, 136 flow. Second operand 2 states and 283 transitions. [2023-11-06 21:59:00,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 53 transitions, 196 flow [2023-11-06 21:59:00,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 188 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 21:59:00,515 INFO L231 Difference]: Finished difference. Result has 47 places, 53 transitions, 110 flow [2023-11-06 21:59:00,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=53} [2023-11-06 21:59:00,522 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2023-11-06 21:59:00,523 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 53 transitions, 110 flow [2023-11-06 21:59:00,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 21:59:00,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:00,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:00,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:59:00,525 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:00,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash 583443, now seen corresponding path program 1 times [2023-11-06 21:59:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350897761] [2023-11-06 21:59:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:00,771 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 21:59:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:00,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350897761] [2023-11-06 21:59:00,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350897761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:00,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:00,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:00,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059566930] [2023-11-06 21:59:00,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:00,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:00,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:00,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 243 [2023-11-06 21:59:00,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 53 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 21:59:00,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:00,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 243 [2023-11-06 21:59:00,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:01,123 INFO L124 PetriNetUnfolderBase]: 1504/2355 cut-off events. [2023-11-06 21:59:01,123 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:59:01,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4393 conditions, 2355 events. 1504/2355 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11681 event pairs, 715 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 4390. Up to 2025 conditions per place. [2023-11-06 21:59:01,147 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 35 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-06 21:59:01,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 180 flow [2023-11-06 21:59:01,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-11-06 21:59:01,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020576131687243 [2023-11-06 21:59:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-11-06 21:59:01,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-11-06 21:59:01,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:01,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-11-06 21:59:01,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states 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 21:59:01,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:01,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:01,166 INFO L175 Difference]: Start difference. First operand has 47 places, 53 transitions, 110 flow. Second operand 3 states and 366 transitions. [2023-11-06 21:59:01,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 180 flow [2023-11-06 21:59:01,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 180 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:01,170 INFO L231 Difference]: Finished difference. Result has 47 places, 51 transitions, 110 flow [2023-11-06 21:59:01,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=51} [2023-11-06 21:59:01,172 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2023-11-06 21:59:01,173 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 51 transitions, 110 flow [2023-11-06 21:59:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 21:59:01,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:01,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:59:01,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:59:01,181 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:01,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 583444, now seen corresponding path program 1 times [2023-11-06 21:59:01,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:01,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58868740] [2023-11-06 21:59:01,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:01,327 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 21:59:01,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58868740] [2023-11-06 21:59:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58868740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:01,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:01,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:59:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499092885] [2023-11-06 21:59:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:01,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:01,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:01,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:01,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:01,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 243 [2023-11-06 21:59:01,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 21:59:01,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:01,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 243 [2023-11-06 21:59:01,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:01,630 INFO L124 PetriNetUnfolderBase]: 1472/2295 cut-off events. [2023-11-06 21:59:01,631 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:59:01,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4283 conditions, 2295 events. 1472/2295 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11275 event pairs, 696 based on Foata normal form. 0/1291 useless extension candidates. Maximal degree in co-relation 4279. Up to 1972 conditions per place. [2023-11-06 21:59:01,651 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 33 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-06 21:59:01,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 176 flow [2023-11-06 21:59:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-11-06 21:59:01,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157750342935528 [2023-11-06 21:59:01,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-11-06 21:59:01,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-11-06 21:59:01,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:01,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-11-06 21:59:01,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:01,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:01,660 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:01,660 INFO L175 Difference]: Start difference. First operand has 47 places, 51 transitions, 110 flow. Second operand 3 states and 376 transitions. [2023-11-06 21:59:01,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 176 flow [2023-11-06 21:59:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:01,663 INFO L231 Difference]: Finished difference. Result has 45 places, 49 transitions, 106 flow [2023-11-06 21:59:01,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=49} [2023-11-06 21:59:01,664 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2023-11-06 21:59:01,664 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 49 transitions, 106 flow [2023-11-06 21:59:01,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 21:59:01,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:01,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:01,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 21:59:01,666 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:01,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:01,666 INFO L85 PathProgramCache]: Analyzing trace with hash 560702214, now seen corresponding path program 1 times [2023-11-06 21:59:01,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070777631] [2023-11-06 21:59:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:01,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:01,830 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 21:59:01,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:01,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070777631] [2023-11-06 21:59:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070777631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:01,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:01,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176550532] [2023-11-06 21:59:01,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:01,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:01,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:01,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:01,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:01,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 243 [2023-11-06 21:59:01,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 49 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 21:59:01,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:01,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 243 [2023-11-06 21:59:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:02,102 INFO L124 PetriNetUnfolderBase]: 1087/1719 cut-off events. [2023-11-06 21:59:02,103 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:59:02,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3207 conditions, 1719 events. 1087/1719 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8111 event pairs, 499 based on Foata normal form. 0/1021 useless extension candidates. Maximal degree in co-relation 3203. Up to 1472 conditions per place. [2023-11-06 21:59:02,117 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 32 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-06 21:59:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 48 transitions, 172 flow [2023-11-06 21:59:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-11-06 21:59:02,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50480109739369 [2023-11-06 21:59:02,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-11-06 21:59:02,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-11-06 21:59:02,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:02,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-11-06 21:59:02,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 21:59:02,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,125 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,126 INFO L175 Difference]: Start difference. First operand has 45 places, 49 transitions, 106 flow. Second operand 3 states and 368 transitions. [2023-11-06 21:59:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 48 transitions, 172 flow [2023-11-06 21:59:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 48 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:02,128 INFO L231 Difference]: Finished difference. Result has 44 places, 48 transitions, 104 flow [2023-11-06 21:59:02,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=48} [2023-11-06 21:59:02,130 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -11 predicate places. [2023-11-06 21:59:02,131 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 48 transitions, 104 flow [2023-11-06 21:59:02,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 21:59:02,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:02,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:59:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 21:59:02,132 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:02,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 560702213, now seen corresponding path program 1 times [2023-11-06 21:59:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321940604] [2023-11-06 21:59:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,202 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 21:59:02,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:02,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321940604] [2023-11-06 21:59:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321940604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:02,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:02,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022415526] [2023-11-06 21:59:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:02,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:02,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 243 [2023-11-06 21:59:02,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 48 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:02,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 243 [2023-11-06 21:59:02,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:02,418 INFO L124 PetriNetUnfolderBase]: 702/1143 cut-off events. [2023-11-06 21:59:02,420 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 21:59:02,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2131 conditions, 1143 events. 702/1143 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5075 event pairs, 302 based on Foata normal form. 0/751 useless extension candidates. Maximal degree in co-relation 2127. Up to 972 conditions per place. [2023-11-06 21:59:02,432 INFO L140 encePairwiseOnDemand]: 240/243 looper letters, 31 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-06 21:59:02,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 47 transitions, 168 flow [2023-11-06 21:59:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:02,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-11-06 21:59:02,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787379972565158 [2023-11-06 21:59:02,435 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-11-06 21:59:02,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-11-06 21:59:02,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:02,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-11-06 21:59:02,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 21:59:02,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,441 INFO L175 Difference]: Start difference. First operand has 44 places, 48 transitions, 104 flow. Second operand 3 states and 349 transitions. [2023-11-06 21:59:02,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 47 transitions, 168 flow [2023-11-06 21:59:02,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:02,443 INFO L231 Difference]: Finished difference. Result has 43 places, 47 transitions, 102 flow [2023-11-06 21:59:02,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=47} [2023-11-06 21:59:02,444 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -12 predicate places. [2023-11-06 21:59:02,444 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 102 flow [2023-11-06 21:59:02,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.25) internal successors, (425), 4 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:02,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:02,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 21:59:02,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:02,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,446 INFO L85 PathProgramCache]: Analyzing trace with hash 967924078, now seen corresponding path program 1 times [2023-11-06 21:59:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832138951] [2023-11-06 21:59:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,485 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 21:59:02,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832138951] [2023-11-06 21:59:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832138951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:02,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:02,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20328612] [2023-11-06 21:59:02,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:02,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:02,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:02,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 243 [2023-11-06 21:59:02,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 21:59:02,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:02,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 243 [2023-11-06 21:59:02,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:02,669 INFO L124 PetriNetUnfolderBase]: 736/1219 cut-off events. [2023-11-06 21:59:02,669 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-06 21:59:02,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1219 events. 736/1219 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5529 event pairs, 179 based on Foata normal form. 24/816 useless extension candidates. Maximal degree in co-relation 2275. Up to 686 conditions per place. [2023-11-06 21:59:02,680 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 50 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-11-06 21:59:02,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 66 transitions, 250 flow [2023-11-06 21:59:02,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:02,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:02,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-06 21:59:02,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445816186556928 [2023-11-06 21:59:02,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-06 21:59:02,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-06 21:59:02,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:02,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-06 21:59:02,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 21:59:02,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,706 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,707 INFO L175 Difference]: Start difference. First operand has 43 places, 47 transitions, 102 flow. Second operand 3 states and 397 transitions. [2023-11-06 21:59:02,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 66 transitions, 250 flow [2023-11-06 21:59:02,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 66 transitions, 244 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:02,709 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 118 flow [2023-11-06 21:59:02,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2023-11-06 21:59:02,711 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -10 predicate places. [2023-11-06 21:59:02,711 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 118 flow [2023-11-06 21:59:02,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 21:59:02,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:02,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 21:59:02,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:02,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash 655711525, now seen corresponding path program 1 times [2023-11-06 21:59:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828988638] [2023-11-06 21:59:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:02,756 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 21:59:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828988638] [2023-11-06 21:59:02,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828988638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:02,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:02,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:02,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094639705] [2023-11-06 21:59:02,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:02,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:02,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:02,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:02,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:02,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 243 [2023-11-06 21:59:02,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:02,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 243 [2023-11-06 21:59:02,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:02,954 INFO L124 PetriNetUnfolderBase]: 693/1166 cut-off events. [2023-11-06 21:59:02,954 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-11-06 21:59:02,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1166 events. 693/1166 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5241 event pairs, 223 based on Foata normal form. 34/881 useless extension candidates. Maximal degree in co-relation 2326. Up to 763 conditions per place. [2023-11-06 21:59:02,965 INFO L140 encePairwiseOnDemand]: 239/243 looper letters, 50 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-06 21:59:02,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 258 flow [2023-11-06 21:59:02,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:02,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2023-11-06 21:59:02,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432098765432098 [2023-11-06 21:59:02,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2023-11-06 21:59:02,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2023-11-06 21:59:02,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:02,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2023-11-06 21:59:02,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:02,981 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 118 flow. Second operand 3 states and 396 transitions. [2023-11-06 21:59:02,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 258 flow [2023-11-06 21:59:02,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:02,989 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 122 flow [2023-11-06 21:59:02,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2023-11-06 21:59:02,991 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2023-11-06 21:59:02,991 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 122 flow [2023-11-06 21:59:02,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:02,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:02,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:02,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 21:59:02,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:02,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1028618984, now seen corresponding path program 1 times [2023-11-06 21:59:02,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:02,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550614026] [2023-11-06 21:59:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,074 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 21:59:03,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550614026] [2023-11-06 21:59:03,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550614026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438072503] [2023-11-06 21:59:03,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:03,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:03,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:03,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 243 [2023-11-06 21:59:03,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 21:59:03,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:03,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 243 [2023-11-06 21:59:03,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:03,421 INFO L124 PetriNetUnfolderBase]: 1000/1629 cut-off events. [2023-11-06 21:59:03,421 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-11-06 21:59:03,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3331 conditions, 1629 events. 1000/1629 cut-off events. For 309/309 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7332 event pairs, 206 based on Foata normal form. 20/1287 useless extension candidates. Maximal degree in co-relation 3325. Up to 552 conditions per place. [2023-11-06 21:59:03,436 INFO L140 encePairwiseOnDemand]: 226/243 looper letters, 69 selfloop transitions, 24 changer transitions 0/101 dead transitions. [2023-11-06 21:59:03,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 101 transitions, 433 flow [2023-11-06 21:59:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:03,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:03,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 591 transitions. [2023-11-06 21:59:03,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48641975308641977 [2023-11-06 21:59:03,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 591 transitions. [2023-11-06 21:59:03,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 591 transitions. [2023-11-06 21:59:03,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:03,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 591 transitions. [2023-11-06 21:59:03,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.2) internal successors, (591), 5 states have internal predecessors, (591), 0 states have call successors, (0), 0 states 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 21:59:03,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 21:59:03,447 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 21:59:03,448 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 122 flow. Second operand 5 states and 591 transitions. [2023-11-06 21:59:03,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 101 transitions, 433 flow [2023-11-06 21:59:03,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 101 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:03,453 INFO L231 Difference]: Finished difference. Result has 53 places, 68 transitions, 298 flow [2023-11-06 21:59:03,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=53, PETRI_TRANSITIONS=68} [2023-11-06 21:59:03,454 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-11-06 21:59:03,454 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 68 transitions, 298 flow [2023-11-06 21:59:03,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.0) internal successors, (412), 4 states have internal predecessors, (412), 0 states have call successors, (0), 0 states 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 21:59:03,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:03,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 21:59:03,455 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:03,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:03,456 INFO L85 PathProgramCache]: Analyzing trace with hash 675236632, now seen corresponding path program 2 times [2023-11-06 21:59:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:03,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416630516] [2023-11-06 21:59:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,528 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 21:59:03,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416630516] [2023-11-06 21:59:03,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416630516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903433907] [2023-11-06 21:59:03,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:03,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:03,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:03,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 243 [2023-11-06 21:59:03,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 68 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 21:59:03,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:03,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 243 [2023-11-06 21:59:03,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:03,781 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([539] L752-->thr1EXIT: Formula: (and (= 0 |v_thr1Thread1of1ForFork1_#res#1.offset_7|) (or (< |v_thr1Thread1of1ForFork1_~f21~0#1_73| 2) (< 3 |v_thr1Thread1of1ForFork1_~f21~0#1_73|)) (= |v_thr1Thread1of1ForFork1_#res#1.base_7| 0) (= v_~flag1~0_48 0)) InVars {thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_73|} OutVars{thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_7|, thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_73|, ~flag1~0=v_~flag1~0_48, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_7|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#res#1.offset, ~flag1~0, thr1Thread1of1ForFork1_#res#1.base][71], [Black: 157#(<= 3 ~flag1~0), Black: 160#(and (<= 3 ~flag1~0) (<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)), Black: 155#true, Black: 144#true, 73#L799true, 123#true, Black: 152#(= ~x~0 1), 64#thr1EXITtrue, 166#true, 19#L819-4true, 158#(<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)]) [2023-11-06 21:59:03,782 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2023-11-06 21:59:03,782 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 21:59:03,782 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2023-11-06 21:59:03,782 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 21:59:03,789 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([539] L752-->thr1EXIT: Formula: (and (= 0 |v_thr1Thread1of1ForFork1_#res#1.offset_7|) (or (< |v_thr1Thread1of1ForFork1_~f21~0#1_73| 2) (< 3 |v_thr1Thread1of1ForFork1_~f21~0#1_73|)) (= |v_thr1Thread1of1ForFork1_#res#1.base_7| 0) (= v_~flag1~0_48 0)) InVars {thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_73|} OutVars{thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_7|, thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_73|, ~flag1~0=v_~flag1~0_48, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_7|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#res#1.offset, ~flag1~0, thr1Thread1of1ForFork1_#res#1.base][71], [51#L820-1true, Black: 157#(<= 3 ~flag1~0), Black: 160#(and (<= 3 ~flag1~0) (<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)), Black: 155#true, Black: 144#true, 73#L799true, 123#true, 64#thr1EXITtrue, 166#true, Black: 152#(= ~x~0 1), 158#(<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)]) [2023-11-06 21:59:03,789 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2023-11-06 21:59:03,790 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2023-11-06 21:59:03,790 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2023-11-06 21:59:03,790 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2023-11-06 21:59:03,828 INFO L124 PetriNetUnfolderBase]: 1017/1714 cut-off events. [2023-11-06 21:59:03,828 INFO L125 PetriNetUnfolderBase]: For 1613/1714 co-relation queries the response was YES. [2023-11-06 21:59:03,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4897 conditions, 1714 events. 1017/1714 cut-off events. For 1613/1714 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8296 event pairs, 320 based on Foata normal form. 29/1607 useless extension candidates. Maximal degree in co-relation 4888. Up to 1216 conditions per place. [2023-11-06 21:59:03,848 INFO L140 encePairwiseOnDemand]: 238/243 looper letters, 66 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2023-11-06 21:59:03,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 529 flow [2023-11-06 21:59:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:03,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:03,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-11-06 21:59:03,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541838134430727 [2023-11-06 21:59:03,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-11-06 21:59:03,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-11-06 21:59:03,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:03,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-11-06 21:59:03,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states 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 21:59:03,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:03,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:03,858 INFO L175 Difference]: Start difference. First operand has 53 places, 68 transitions, 298 flow. Second operand 3 states and 395 transitions. [2023-11-06 21:59:03,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 529 flow [2023-11-06 21:59:03,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 89 transitions, 529 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 21:59:03,866 INFO L231 Difference]: Finished difference. Result has 57 places, 72 transitions, 350 flow [2023-11-06 21:59:03,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=57, PETRI_TRANSITIONS=72} [2023-11-06 21:59:03,868 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-11-06 21:59:03,868 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 72 transitions, 350 flow [2023-11-06 21:59:03,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states 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 21:59:03,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:03,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:03,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 21:59:03,869 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:03,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:03,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2112917060, now seen corresponding path program 3 times [2023-11-06 21:59:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:03,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387772119] [2023-11-06 21:59:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:03,924 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 21:59:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:03,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387772119] [2023-11-06 21:59:03,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387772119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:03,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:03,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 21:59:03,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541755708] [2023-11-06 21:59:03,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:03,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:03,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:03,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:03,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:03,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 243 [2023-11-06 21:59:03,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 72 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 21:59:03,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:03,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 243 [2023-11-06 21:59:03,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:04,381 INFO L124 PetriNetUnfolderBase]: 1041/1796 cut-off events. [2023-11-06 21:59:04,382 INFO L125 PetriNetUnfolderBase]: For 2200/2263 co-relation queries the response was YES. [2023-11-06 21:59:04,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5317 conditions, 1796 events. 1041/1796 cut-off events. For 2200/2263 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8772 event pairs, 285 based on Foata normal form. 98/1831 useless extension candidates. Maximal degree in co-relation 5306. Up to 859 conditions per place. [2023-11-06 21:59:04,405 INFO L140 encePairwiseOnDemand]: 227/243 looper letters, 85 selfloop transitions, 22 changer transitions 11/132 dead transitions. [2023-11-06 21:59:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 132 transitions, 857 flow [2023-11-06 21:59:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:59:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:59:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 583 transitions. [2023-11-06 21:59:04,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47983539094650207 [2023-11-06 21:59:04,409 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 583 transitions. [2023-11-06 21:59:04,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 583 transitions. [2023-11-06 21:59:04,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:04,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 583 transitions. [2023-11-06 21:59:04,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.6) internal successors, (583), 5 states have internal predecessors, (583), 0 states have call successors, (0), 0 states 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 21:59:04,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 21:59:04,416 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states 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 21:59:04,417 INFO L175 Difference]: Start difference. First operand has 57 places, 72 transitions, 350 flow. Second operand 5 states and 583 transitions. [2023-11-06 21:59:04,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 132 transitions, 857 flow [2023-11-06 21:59:04,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 132 transitions, 825 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:04,428 INFO L231 Difference]: Finished difference. Result has 61 places, 82 transitions, 490 flow [2023-11-06 21:59:04,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=61, PETRI_TRANSITIONS=82} [2023-11-06 21:59:04,431 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-11-06 21:59:04,431 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 82 transitions, 490 flow [2023-11-06 21:59:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.0) internal successors, (408), 4 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 21:59:04,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:04,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 21:59:04,432 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:04,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 44627178, now seen corresponding path program 1 times [2023-11-06 21:59:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090122984] [2023-11-06 21:59:04,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:04,516 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 21:59:04,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090122984] [2023-11-06 21:59:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090122984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:04,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:04,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:04,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660445609] [2023-11-06 21:59:04,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:04,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:04,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:04,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:04,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:04,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 243 [2023-11-06 21:59:04,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 82 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 21:59:04,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:04,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 243 [2023-11-06 21:59:04,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:04,771 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([517] L787-->L792: Formula: (and (= v_~flag2~0_Out_2 4) (= |v_thr2Thread1of1ForFork0_~f12~0#1_In_3| 4)) InVars {thr2Thread1of1ForFork0_~f12~0#1=|v_thr2Thread1of1ForFork0_~f12~0#1_In_3|} OutVars{thr2Thread1of1ForFork0_~f12~0#1=|v_thr2Thread1of1ForFork0_~f12~0#1_In_3|, ~flag2~0=v_~flag2~0_Out_2} AuxVars[] AssignedVars[~flag2~0][76], [Black: 157#(<= 3 ~flag1~0), Black: 155#true, 44#L742true, Black: 158#(<= 3 |thr2Thread1of1ForFork0_~f12~0#1|), Black: 168#(= ~flag1~0 1), 174#(= ~flag2~0 4), 183#true, Black: 177#(and (= ~flag2~0 4) (= |thr1Thread1of1ForFork1_~f21~0#1| 4)), Black: 172#true, Black: 175#(= |thr1Thread1of1ForFork1_~f21~0#1| 4), Black: 144#true, 160#(and (<= 3 ~flag1~0) (<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)), 123#true, Black: 152#(= ~x~0 1), 19#L819-4true, 92#L792true]) [2023-11-06 21:59:04,771 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is cut-off event [2023-11-06 21:59:04,771 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-11-06 21:59:04,771 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-11-06 21:59:04,772 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-11-06 21:59:04,781 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([517] L787-->L792: Formula: (and (= v_~flag2~0_Out_2 4) (= |v_thr2Thread1of1ForFork0_~f12~0#1_In_3| 4)) InVars {thr2Thread1of1ForFork0_~f12~0#1=|v_thr2Thread1of1ForFork0_~f12~0#1_In_3|} OutVars{thr2Thread1of1ForFork0_~f12~0#1=|v_thr2Thread1of1ForFork0_~f12~0#1_In_3|, ~flag2~0=v_~flag2~0_Out_2} AuxVars[] AssignedVars[~flag2~0][76], [Black: 157#(<= 3 ~flag1~0), Black: 155#true, Black: 158#(<= 3 |thr2Thread1of1ForFork0_~f12~0#1|), 44#L742true, Black: 168#(= ~flag1~0 1), 174#(= ~flag2~0 4), 51#L820-1true, 183#true, Black: 177#(and (= ~flag2~0 4) (= |thr1Thread1of1ForFork1_~f21~0#1| 4)), Black: 172#true, Black: 175#(= |thr1Thread1of1ForFork1_~f21~0#1| 4), Black: 144#true, 160#(and (<= 3 ~flag1~0) (<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)), 123#true, Black: 152#(= ~x~0 1), 92#L792true]) [2023-11-06 21:59:04,781 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2023-11-06 21:59:04,782 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-11-06 21:59:04,782 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is cut-off event [2023-11-06 21:59:04,782 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2023-11-06 21:59:04,869 INFO L124 PetriNetUnfolderBase]: 1184/2105 cut-off events. [2023-11-06 21:59:04,870 INFO L125 PetriNetUnfolderBase]: For 5243/5426 co-relation queries the response was YES. [2023-11-06 21:59:04,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 2105 events. 1184/2105 cut-off events. For 5243/5426 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11278 event pairs, 267 based on Foata normal form. 59/2066 useless extension candidates. Maximal degree in co-relation 7620. Up to 1236 conditions per place. [2023-11-06 21:59:04,889 INFO L140 encePairwiseOnDemand]: 236/243 looper letters, 85 selfloop transitions, 8 changer transitions 0/115 dead transitions. [2023-11-06 21:59:04,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 879 flow [2023-11-06 21:59:04,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:04,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:04,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 397 transitions. [2023-11-06 21:59:04,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5445816186556928 [2023-11-06 21:59:04,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 397 transitions. [2023-11-06 21:59:04,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 397 transitions. [2023-11-06 21:59:04,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:04,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 397 transitions. [2023-11-06 21:59:04,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states 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 21:59:04,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:04,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:04,900 INFO L175 Difference]: Start difference. First operand has 61 places, 82 transitions, 490 flow. Second operand 3 states and 397 transitions. [2023-11-06 21:59:04,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 879 flow [2023-11-06 21:59:04,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 115 transitions, 872 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:04,915 INFO L231 Difference]: Finished difference. Result has 63 places, 89 transitions, 577 flow [2023-11-06 21:59:04,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=577, PETRI_PLACES=63, PETRI_TRANSITIONS=89} [2023-11-06 21:59:04,916 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2023-11-06 21:59:04,916 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 89 transitions, 577 flow [2023-11-06 21:59:04,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 21:59:04,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:04,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 21:59:04,917 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [thr2Err0ASSERT_VIOLATIONMEMORY_LEAK, thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-06 21:59:04,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -508318060, now seen corresponding path program 2 times [2023-11-06 21:59:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264423192] [2023-11-06 21:59:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:05,349 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 21:59:05,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:05,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264423192] [2023-11-06 21:59:05,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264423192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:05,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:05,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:59:05,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715125426] [2023-11-06 21:59:05,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:05,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:59:05,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:05,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:59:05,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:59:05,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 243 [2023-11-06 21:59:05,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 89 transitions, 577 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 21:59:05,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:05,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 243 [2023-11-06 21:59:05,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:05,586 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([516] L712-->L716: Formula: (and (= v_~flag1~0_Out_10 3) (< |v_thr1Thread1of1ForFork1_~f21~0#1_In_7| 3)) InVars {thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_In_7|} OutVars{~flag1~0=v_~flag1~0_Out_10, thr1Thread1of1ForFork1_~f21~0#1=|v_thr1Thread1of1ForFork1_~f21~0#1_In_7|} AuxVars[] AssignedVars[~flag1~0][8], [Black: 160#(and (<= 3 ~flag1~0) (<= 3 |thr2Thread1of1ForFork0_~f12~0#1|)), 172#true, Black: 155#true, Black: 158#(<= 3 |thr2Thread1of1ForFork0_~f12~0#1|), 157#(<= 3 ~flag1~0), 192#(and (not (= |ULTIMATE.start_main_~#t2~0#1.base| |ULTIMATE.start_main_~#t1~0#1.base|)) (= (store (store |#valid| |ULTIMATE.start_main_~#t2~0#1.base| 0) |ULTIMATE.start_main_~#t1~0#1.base| 0) |ULTIMATE.start_main_old_#valid#1|)), 84#L769true, Black: 168#(= ~flag1~0 1), 51#L820-1true, Black: 177#(and (= ~flag2~0 4) (= |thr1Thread1of1ForFork1_~f21~0#1| 4)), 185#(= ~flag2~0 1), Black: 144#true, Black: 175#(= |thr1Thread1of1ForFork1_~f21~0#1| 4), Black: 174#(= ~flag2~0 4), 123#true, 13#L716true, Black: 183#true]) [2023-11-06 21:59:05,586 INFO L294 olderBase$Statistics]: this new event has 12 ancestors and is cut-off event [2023-11-06 21:59:05,586 INFO L297 olderBase$Statistics]: existing Event has 11 ancestors and is cut-off event [2023-11-06 21:59:05,586 INFO L297 olderBase$Statistics]: existing Event has 11 ancestors and is cut-off event [2023-11-06 21:59:05,586 INFO L297 olderBase$Statistics]: existing Event has 10 ancestors and is cut-off event [2023-11-06 21:59:05,813 INFO L124 PetriNetUnfolderBase]: 1191/2105 cut-off events. [2023-11-06 21:59:05,813 INFO L125 PetriNetUnfolderBase]: For 6556/6779 co-relation queries the response was YES. [2023-11-06 21:59:05,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 2105 events. 1191/2105 cut-off events. For 6556/6779 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11254 event pairs, 374 based on Foata normal form. 61/2061 useless extension candidates. Maximal degree in co-relation 8101. Up to 1698 conditions per place. [2023-11-06 21:59:05,823 INFO L140 encePairwiseOnDemand]: 241/243 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2023-11-06 21:59:05,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 707 flow [2023-11-06 21:59:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:05,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:05,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-11-06 21:59:05,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48559670781893005 [2023-11-06 21:59:05,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-11-06 21:59:05,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-11-06 21:59:05,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:05,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-11-06 21:59:05,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 21:59:05,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:05,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:59:05,831 INFO L175 Difference]: Start difference. First operand has 63 places, 89 transitions, 577 flow. Second operand 3 states and 354 transitions. [2023-11-06 21:59:05,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 707 flow [2023-11-06 21:59:05,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:59:05,844 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2023-11-06 21:59:05,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=243, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2023-11-06 21:59:05,845 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-11-06 21:59:05,845 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2023-11-06 21:59:05,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 21:59:05,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2023-11-06 21:59:05,849 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (13 of 15 remaining) [2023-11-06 21:59:05,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-06 21:59:05,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-06 21:59:05,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-11-06 21:59:05,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-11-06 21:59:05,850 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-11-06 21:59:05,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-11-06 21:59:05,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-06 21:59:05,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-06 21:59:05,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (4 of 15 remaining) [2023-11-06 21:59:05,851 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 15 remaining) [2023-11-06 21:59:05,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-11-06 21:59:05,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 15 remaining) [2023-11-06 21:59:05,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2023-11-06 21:59:05,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 21:59:05,853 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:05,859 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 21:59:05,859 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:59:05,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:59:05 BasicIcfg [2023-11-06 21:59:05,864 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:59:05,864 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:59:05,864 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:59:05,865 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:59:05,865 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:56" (3/4) ... [2023-11-06 21:59:05,867 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:59:05,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-11-06 21:59:05,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-11-06 21:59:05,877 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-06 21:59:05,877 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 21:59:05,878 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:59:05,878 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:59:05,929 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:59:05,929 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:59:05,929 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:59:05,930 INFO L158 Benchmark]: Toolchain (without parser) took 10995.38ms. Allocated memory was 138.4MB in the beginning and 287.3MB in the end (delta: 148.9MB). Free memory was 71.9MB in the beginning and 117.2MB in the end (delta: -45.3MB). Peak memory consumption was 104.5MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,930 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:59:05,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 586.53ms. Allocated memory is still 138.4MB. Free memory was 71.6MB in the beginning and 51.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,931 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.72ms. Allocated memory is still 138.4MB. Free memory was 50.9MB in the beginning and 48.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,931 INFO L158 Benchmark]: Boogie Preprocessor took 36.31ms. Allocated memory is still 138.4MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,932 INFO L158 Benchmark]: RCFGBuilder took 618.29ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 47.0MB in the beginning and 155.5MB in the end (delta: -108.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,932 INFO L158 Benchmark]: TraceAbstraction took 9604.85ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 154.4MB in the beginning and 120.3MB in the end (delta: 34.1MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,933 INFO L158 Benchmark]: Witness Printer took 65.04ms. Allocated memory is still 287.3MB. Free memory was 120.3MB in the beginning and 117.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:59:05,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 138.4MB. Free memory is still 109.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 586.53ms. Allocated memory is still 138.4MB. Free memory was 71.6MB in the beginning and 51.1MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.72ms. Allocated memory is still 138.4MB. Free memory was 50.9MB in the beginning and 48.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.31ms. Allocated memory is still 138.4MB. Free memory was 48.9MB in the beginning and 47.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 618.29ms. Allocated memory was 138.4MB in the beginning and 199.2MB in the end (delta: 60.8MB). Free memory was 47.0MB in the beginning and 155.5MB in the end (delta: -108.5MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9604.85ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 154.4MB in the beginning and 120.3MB in the end (delta: 34.1MB). Peak memory consumption was 122.3MB. Max. memory is 16.1GB. * Witness Printer took 65.04ms. Allocated memory is still 287.3MB. Free memory was 120.3MB in the beginning and 117.2MB 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: 3.1s, 113 PlacesBefore, 55 PlacesAfterwards, 128 TransitionsBefore, 62 TransitionsAfterwards, 5248 CoEnabledTransitionPairs, 5 FixpointIterations, 28 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 20 ConcurrentYvCompositions, 8 ChoiceCompositions, 108 TotalNumberOfCompositions, 12577 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5166, independent: 4899, independent conditional: 0, independent unconditional: 4899, dependent: 267, dependent conditional: 0, dependent unconditional: 267, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2626, independent: 2574, independent conditional: 0, independent unconditional: 2574, dependent: 52, dependent conditional: 0, dependent unconditional: 52, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5166, independent: 2325, independent conditional: 0, independent unconditional: 2325, dependent: 215, dependent conditional: 0, dependent unconditional: 215, unknown: 2626, unknown conditional: 0, unknown unconditional: 2626] , Statistics on independence cache: Total cache size (in pairs): 290, Positive cache size: 256, Positive conditional cache size: 0, Positive unconditional cache size: 256, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: -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: 816]: 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 5 procedures, 178 locations, 15 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: 9.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 906 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 551 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 94 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1312 IncrementalHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 94 mSolverCounterUnsat, 112 mSDtfsCounter, 1312 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=577occurred in iteration=11, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 154 NumberOfCodeBlocks, 154 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 21:59:05,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20c67080-0dd0-4092-93ac-e090b5bcc4a9/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE