./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:33:47,613 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:33:47,700 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 21:33:47,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:33:47,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:33:47,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:33:47,767 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:33:47,768 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:33:47,769 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:33:47,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:33:47,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:33:47,772 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:33:47,773 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:33:47,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:33:47,777 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:33:47,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:33:47,779 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:33:47,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:33:47,783 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 21:33:47,784 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 21:33:47,784 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 21:33:47,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:33:47,785 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:33:47,786 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:33:47,786 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:33:47,786 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:33:47,787 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:33:47,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:33:47,788 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:33:47,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:33:47,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:47,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:33:47,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:33:47,791 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:33:47,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:33:47,792 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:33:47,792 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:33:47,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:33:47,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:33:47,820 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_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee [2023-11-23 21:33:48,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:33:48,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:33:48,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:33:48,092 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:33:48,093 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:33:48,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2023-11-23 21:33:51,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:33:51,567 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:33:51,568 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/sv-benchmarks/c/weaver/chl-time-subst.wvr.c [2023-11-23 21:33:51,586 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/data/1b2ddc3f5/3ceee5f2e83545029774c067280ee1c8/FLAG4333677e2 [2023-11-23 21:33:51,608 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/data/1b2ddc3f5/3ceee5f2e83545029774c067280ee1c8 [2023-11-23 21:33:51,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:33:51,620 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:33:51,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:51,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:33:51,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:33:51,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:51" (1/1) ... [2023-11-23 21:33:51,634 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e4351f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:51, skipping insertion in model container [2023-11-23 21:33:51,635 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:33:51" (1/1) ... [2023-11-23 21:33:51,675 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:33:51,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:51,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:33:52,045 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:33:52,058 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:33:52,060 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:33:52,069 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:33:52,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52 WrapperNode [2023-11-23 21:33:52,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:33:52,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:52,073 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:33:52,073 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:33:52,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,111 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,172 INFO L138 Inliner]: procedures = 23, calls = 40, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 227 [2023-11-23 21:33:52,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:33:52,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:33:52,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:33:52,176 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:33:52,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,234 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,236 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,239 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:33:52,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:33:52,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:33:52,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:33:52,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (1/1) ... [2023-11-23 21:33:52,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:33:52,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:33:52,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:33:52,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:33:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:33:52,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:33:52,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:33:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:33:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:33:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:33:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:33:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:33:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:33:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:33:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:33:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:33:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:33:52,362 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:33:52,525 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:33:52,527 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:33:53,069 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:33:53,617 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:33:53,617 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:33:53,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:53 BoogieIcfgContainer [2023-11-23 21:33:53,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:33:53,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:33:53,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:33:53,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:33:53,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:33:51" (1/3) ... [2023-11-23 21:33:53,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66470d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:53, skipping insertion in model container [2023-11-23 21:33:53,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:33:52" (2/3) ... [2023-11-23 21:33:53,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66470d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:33:53, skipping insertion in model container [2023-11-23 21:33:53,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:53" (3/3) ... [2023-11-23 21:33:53,630 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2023-11-23 21:33:53,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:33:53,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-23 21:33:53,653 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:33:53,739 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:33:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 47 transitions, 115 flow [2023-11-23 21:33:53,888 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-23 21:33:53,888 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:33:53,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 0/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-23 21:33:53,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 47 transitions, 115 flow [2023-11-23 21:33:53,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 43 transitions, 104 flow [2023-11-23 21:33:53,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:33:53,918 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;@7f930412, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:33:53,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-23 21:33:53,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:33:53,922 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-23 21:33:53,922 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 21:33:53,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:53,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:33:53,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:53,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:53,929 INFO L85 PathProgramCache]: Analyzing trace with hash 23164, now seen corresponding path program 1 times [2023-11-23 21:33:53,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:53,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518500731] [2023-11-23 21:33:53,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:54,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:54,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518500731] [2023-11-23 21:33:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518500731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:54,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:54,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:54,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308040817] [2023-11-23 21:33:54,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:54,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:54,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-23 21:33:54,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-23 21:33:54,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:54,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-23 21:33:54,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:54,632 INFO L124 PetriNetUnfolderBase]: 178/400 cut-off events. [2023-11-23 21:33:54,633 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-23 21:33:54,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 400 events. 178/400 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1831 event pairs, 178 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 611. Up to 299 conditions per place. [2023-11-23 21:33:54,643 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-23 21:33:54,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 134 flow [2023-11-23 21:33:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:54,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:54,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-23 21:33:54,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-23 21:33:54,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-23 21:33:54,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-23 21:33:54,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:54,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-23 21:33:54,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-23 21:33:54,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:54,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:54,679 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 3 states and 94 transitions. [2023-11-23 21:33:54,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 134 flow [2023-11-23 21:33:54,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 21:33:54,688 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 86 flow [2023-11-23 21:33:54,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-23 21:33:54,695 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-23 21:33:54,696 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 86 flow [2023-11-23 21:33:54,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-23 21:33:54,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:54,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-23 21:33:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:33:54,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 23165, now seen corresponding path program 1 times [2023-11-23 21:33:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:54,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046110275] [2023-11-23 21:33:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:54,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:54,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046110275] [2023-11-23 21:33:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046110275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647252647] [2023-11-23 21:33:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-23 21:33:55,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-23 21:33:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-23 21:33:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,180 INFO L124 PetriNetUnfolderBase]: 124/302 cut-off events. [2023-11-23 21:33:55,181 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-23 21:33:55,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 302 events. 124/302 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1336 event pairs, 124 based on Foata normal form. 28/285 useless extension candidates. Maximal degree in co-relation 530. Up to 217 conditions per place. [2023-11-23 21:33:55,185 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-23 21:33:55,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 116 flow [2023-11-23 21:33:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-23 21:33:55,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-23 21:33:55,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-23 21:33:55,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,191 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 86 flow. Second operand 3 states and 97 transitions. [2023-11-23 21:33:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 116 flow [2023-11-23 21:33:55,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:55,197 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 83 flow [2023-11-23 21:33:55,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-23 21:33:55,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-23 21:33:55,198 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 83 flow [2023-11-23 21:33:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-23 21:33:55,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:33:55,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:33:55,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:55,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,207 INFO L85 PathProgramCache]: Analyzing trace with hash 690753704, now seen corresponding path program 1 times [2023-11-23 21:33:55,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885802549] [2023-11-23 21:33:55,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885802549] [2023-11-23 21:33:55,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885802549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:55,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727701241] [2023-11-23 21:33:55,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-23 21:33:55,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-23 21:33:55,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-23 21:33:55,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,457 INFO L124 PetriNetUnfolderBase]: 138/317 cut-off events. [2023-11-23 21:33:55,458 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-23 21:33:55,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 317 events. 138/317 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1364 event pairs, 138 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 571. Up to 243 conditions per place. [2023-11-23 21:33:55,461 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-23 21:33:55,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 117 flow [2023-11-23 21:33:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-23 21:33:55,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-23 21:33:55,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-23 21:33:55,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-23 21:33:55,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-23 21:33:55,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-23 21:33:55,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,466 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 83 flow. Second operand 3 states and 93 transitions. [2023-11-23 21:33:55,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 117 flow [2023-11-23 21:33:55,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:55,468 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 80 flow [2023-11-23 21:33:55,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-11-23 21:33:55,469 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-23 21:33:55,469 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 80 flow [2023-11-23 21:33:55,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-23 21:33:55,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:33:55,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:33:55,470 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:55,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,471 INFO L85 PathProgramCache]: Analyzing trace with hash 690753705, now seen corresponding path program 1 times [2023-11-23 21:33:55,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403783939] [2023-11-23 21:33:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403783939] [2023-11-23 21:33:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403783939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:55,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231622989] [2023-11-23 21:33:55,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-23 21:33:55,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-23 21:33:55,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-23 21:33:55,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,685 INFO L124 PetriNetUnfolderBase]: 124/286 cut-off events. [2023-11-23 21:33:55,685 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-23 21:33:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 286 events. 124/286 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1223 event pairs, 124 based on Foata normal form. 9/266 useless extension candidates. Maximal degree in co-relation 514. Up to 217 conditions per place. [2023-11-23 21:33:55,688 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-23 21:33:55,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 110 flow [2023-11-23 21:33:55,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-23 21:33:55,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-23 21:33:55,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-23 21:33:55,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,692 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 80 flow. Second operand 3 states and 97 transitions. [2023-11-23 21:33:55,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 110 flow [2023-11-23 21:33:55,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:55,694 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 77 flow [2023-11-23 21:33:55,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-23 21:33:55,695 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-23 21:33:55,696 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 77 flow [2023-11-23 21:33:55,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-23 21:33:55,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:55,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:33:55,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:55,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1055959922, now seen corresponding path program 1 times [2023-11-23 21:33:55,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794178286] [2023-11-23 21:33:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794178286] [2023-11-23 21:33:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794178286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:55,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419864292] [2023-11-23 21:33:55,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-23 21:33:55,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-23 21:33:55,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-23 21:33:55,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:55,876 INFO L124 PetriNetUnfolderBase]: 124/278 cut-off events. [2023-11-23 21:33:55,877 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-23 21:33:55,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 278 events. 124/278 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1181 event pairs, 124 based on Foata normal form. 11/268 useless extension candidates. Maximal degree in co-relation 506. Up to 217 conditions per place. [2023-11-23 21:33:55,879 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-23 21:33:55,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 107 flow [2023-11-23 21:33:55,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-23 21:33:55,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-23 21:33:55,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:55,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-23 21:33:55,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2023-11-23 21:33:55,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:55,883 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 77 flow. Second operand 3 states and 97 transitions. [2023-11-23 21:33:55,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 107 flow [2023-11-23 21:33:55,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:55,885 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 74 flow [2023-11-23 21:33:55,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-23 21:33:55,886 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2023-11-23 21:33:55,886 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 74 flow [2023-11-23 21:33:55,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-23 21:33:55,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:55,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:33:55,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:33:55,887 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:55,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:55,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1055959921, now seen corresponding path program 1 times [2023-11-23 21:33:55,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:55,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224085531] [2023-11-23 21:33:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:55,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224085531] [2023-11-23 21:33:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224085531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:55,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 21:33:55,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702923984] [2023-11-23 21:33:55,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:33:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:55,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:33:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:33:55,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-23 21:33:55,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-23 21:33:55,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:55,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-23 21:33:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:56,061 INFO L124 PetriNetUnfolderBase]: 138/288 cut-off events. [2023-11-23 21:33:56,062 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-23 21:33:56,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 288 events. 138/288 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1181 event pairs, 138 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 542. Up to 243 conditions per place. [2023-11-23 21:33:56,064 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-23 21:33:56,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 108 flow [2023-11-23 21:33:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:33:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:33:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-23 21:33:56,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-23 21:33:56,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-23 21:33:56,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-23 21:33:56,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:56,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-23 21:33:56,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2023-11-23 21:33:56,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:56,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-23 21:33:56,068 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 3 states and 93 transitions. [2023-11-23 21:33:56,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 108 flow [2023-11-23 21:33:56,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:56,070 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 71 flow [2023-11-23 21:33:56,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-11-23 21:33:56,071 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -13 predicate places. [2023-11-23 21:33:56,071 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 71 flow [2023-11-23 21:33:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-23 21:33:56,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:56,072 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] [2023-11-23 21:33:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:33:56,072 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:56,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash 117238401, now seen corresponding path program 1 times [2023-11-23 21:33:56,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:56,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789987183] [2023-11-23 21:33:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:56,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:33:58,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:33:58,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:33:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789987183] [2023-11-23 21:33:58,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789987183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:33:58,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:33:58,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:33:58,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672333693] [2023-11-23 21:33:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:33:58,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:33:58,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:33:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:33:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:33:58,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:33:58,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:33:58,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:33:58,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:33:58,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:33:58,490 INFO L124 PetriNetUnfolderBase]: 190/395 cut-off events. [2023-11-23 21:33:58,490 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-23 21:33:58,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 395 events. 190/395 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1779 event pairs, 20 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 759. Up to 151 conditions per place. [2023-11-23 21:33:58,494 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 32 selfloop transitions, 2 changer transitions 10/56 dead transitions. [2023-11-23 21:33:58,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 222 flow [2023-11-23 21:33:58,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:33:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:33:58,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2023-11-23 21:33:58,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7872340425531915 [2023-11-23 21:33:58,497 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 185 transitions. [2023-11-23 21:33:58,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 185 transitions. [2023-11-23 21:33:58,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:33:58,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 185 transitions. [2023-11-23 21:33:58,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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) [2023-11-23 21:33:58,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:33:58,501 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:33:58,502 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 71 flow. Second operand 5 states and 185 transitions. [2023-11-23 21:33:58,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 222 flow [2023-11-23 21:33:58,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:33:58,505 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 85 flow [2023-11-23 21:33:58,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-11-23 21:33:58,507 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-11-23 21:33:58,507 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 85 flow [2023-11-23 21:33:58,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:33:58,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:33:58,508 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] [2023-11-23 21:33:58,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:33:58,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:33:58,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:33:58,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1421741843, now seen corresponding path program 2 times [2023-11-23 21:33:58,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:33:58,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786209475] [2023-11-23 21:33:58,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:33:58,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:33:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:00,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:00,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786209475] [2023-11-23 21:34:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786209475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:00,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045465085] [2023-11-23 21:34:00,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:34:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:00,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:34:00,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:34:00,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:34:00,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:00,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:00,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:34:00,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:00,714 INFO L124 PetriNetUnfolderBase]: 212/464 cut-off events. [2023-11-23 21:34:00,714 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-23 21:34:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 464 events. 212/464 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2156 event pairs, 45 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 987. Up to 219 conditions per place. [2023-11-23 21:34:00,718 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 31 selfloop transitions, 3 changer transitions 8/54 dead transitions. [2023-11-23 21:34:00,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 54 transitions, 235 flow [2023-11-23 21:34:00,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:34:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:34:00,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2023-11-23 21:34:00,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.774468085106383 [2023-11-23 21:34:00,721 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 182 transitions. [2023-11-23 21:34:00,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 182 transitions. [2023-11-23 21:34:00,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:00,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 182 transitions. [2023-11-23 21:34:00,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.4) internal successors, (182), 5 states have internal predecessors, (182), 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) [2023-11-23 21:34:00,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:00,724 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:00,724 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 85 flow. Second operand 5 states and 182 transitions. [2023-11-23 21:34:00,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 54 transitions, 235 flow [2023-11-23 21:34:00,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 228 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:00,727 INFO L231 Difference]: Finished difference. Result has 50 places, 31 transitions, 102 flow [2023-11-23 21:34:00,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=50, PETRI_TRANSITIONS=31} [2023-11-23 21:34:00,729 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-23 21:34:00,729 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 31 transitions, 102 flow [2023-11-23 21:34:00,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:00,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:00,730 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] [2023-11-23 21:34:00,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:34:00,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:34:00,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:00,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1943411827, now seen corresponding path program 3 times [2023-11-23 21:34:00,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398722479] [2023-11-23 21:34:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:00,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:02,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:02,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398722479] [2023-11-23 21:34:02,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398722479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:02,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:02,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:02,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047765883] [2023-11-23 21:34:02,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:02,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:34:02,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:34:02,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:34:02,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:34:02,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 31 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:02,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:02,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:34:02,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:02,903 INFO L124 PetriNetUnfolderBase]: 219/487 cut-off events. [2023-11-23 21:34:02,904 INFO L125 PetriNetUnfolderBase]: For 469/470 co-relation queries the response was YES. [2023-11-23 21:34:02,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 487 events. 219/487 cut-off events. For 469/470 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2399 event pairs, 47 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 1139. Up to 231 conditions per place. [2023-11-23 21:34:02,909 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 30 selfloop transitions, 2 changer transitions 12/56 dead transitions. [2023-11-23 21:34:02,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 267 flow [2023-11-23 21:34:02,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:34:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:34:02,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2023-11-23 21:34:02,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7787234042553192 [2023-11-23 21:34:02,913 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 183 transitions. [2023-11-23 21:34:02,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 183 transitions. [2023-11-23 21:34:02,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:02,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 183 transitions. [2023-11-23 21:34:02,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2023-11-23 21:34:02,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:02,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:02,917 INFO L175 Difference]: Start difference. First operand has 50 places, 31 transitions, 102 flow. Second operand 5 states and 183 transitions. [2023-11-23 21:34:02,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 267 flow [2023-11-23 21:34:02,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 256 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-23 21:34:02,924 INFO L231 Difference]: Finished difference. Result has 54 places, 31 transitions, 109 flow [2023-11-23 21:34:02,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=54, PETRI_TRANSITIONS=31} [2023-11-23 21:34:02,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-23 21:34:02,927 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 31 transitions, 109 flow [2023-11-23 21:34:02,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:02,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:02,928 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] [2023-11-23 21:34:02,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:34:02,928 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:34:02,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:02,929 INFO L85 PathProgramCache]: Analyzing trace with hash -52004461, now seen corresponding path program 4 times [2023-11-23 21:34:02,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:02,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299856579] [2023-11-23 21:34:02,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:02,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:04,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:04,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299856579] [2023-11-23 21:34:04,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299856579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:04,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:04,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112273061] [2023-11-23 21:34:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:04,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:34:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:34:04,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:34:04,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:34:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 31 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:04,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:04,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:34:04,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:04,819 INFO L124 PetriNetUnfolderBase]: 170/400 cut-off events. [2023-11-23 21:34:04,820 INFO L125 PetriNetUnfolderBase]: For 618/618 co-relation queries the response was YES. [2023-11-23 21:34:04,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 993 conditions, 400 events. 170/400 cut-off events. For 618/618 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1848 event pairs, 64 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 975. Up to 126 conditions per place. [2023-11-23 21:34:04,824 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 30 selfloop transitions, 3 changer transitions 10/55 dead transitions. [2023-11-23 21:34:04,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 279 flow [2023-11-23 21:34:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:34:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:34:04,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2023-11-23 21:34:04,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7702127659574468 [2023-11-23 21:34:04,827 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 181 transitions. [2023-11-23 21:34:04,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 181 transitions. [2023-11-23 21:34:04,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:04,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 181 transitions. [2023-11-23 21:34:04,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2023-11-23 21:34:04,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:04,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:04,831 INFO L175 Difference]: Start difference. First operand has 54 places, 31 transitions, 109 flow. Second operand 5 states and 181 transitions. [2023-11-23 21:34:04,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 279 flow [2023-11-23 21:34:04,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 260 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-23 21:34:04,837 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 116 flow [2023-11-23 21:34:04,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2023-11-23 21:34:04,840 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-23 21:34:04,840 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 116 flow [2023-11-23 21:34:04,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:04,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:04,841 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] [2023-11-23 21:34:04,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:34:04,842 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:34:04,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:04,842 INFO L85 PathProgramCache]: Analyzing trace with hash -367210843, now seen corresponding path program 5 times [2023-11-23 21:34:04,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:04,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602321396] [2023-11-23 21:34:04,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:04,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:06,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602321396] [2023-11-23 21:34:06,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602321396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:06,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:06,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262934477] [2023-11-23 21:34:06,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:34:06,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:34:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:34:06,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:34:06,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:06,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:06,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:34:06,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:07,409 INFO L124 PetriNetUnfolderBase]: 111/254 cut-off events. [2023-11-23 21:34:07,410 INFO L125 PetriNetUnfolderBase]: For 439/440 co-relation queries the response was YES. [2023-11-23 21:34:07,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 254 events. 111/254 cut-off events. For 439/440 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 987 event pairs, 22 based on Foata normal form. 1/253 useless extension candidates. Maximal degree in co-relation 677. Up to 69 conditions per place. [2023-11-23 21:34:07,413 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 20 selfloop transitions, 1 changer transitions 19/52 dead transitions. [2023-11-23 21:34:07,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 252 flow [2023-11-23 21:34:07,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:34:07,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:34:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 180 transitions. [2023-11-23 21:34:07,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7659574468085106 [2023-11-23 21:34:07,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 180 transitions. [2023-11-23 21:34:07,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 180 transitions. [2023-11-23 21:34:07,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:07,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 180 transitions. [2023-11-23 21:34:07,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 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) [2023-11-23 21:34:07,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:07,421 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:07,421 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 116 flow. Second operand 5 states and 180 transitions. [2023-11-23 21:34:07,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 252 flow [2023-11-23 21:34:07,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 240 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-23 21:34:07,426 INFO L231 Difference]: Finished difference. Result has 57 places, 29 transitions, 95 flow [2023-11-23 21:34:07,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=57, PETRI_TRANSITIONS=29} [2023-11-23 21:34:07,427 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-11-23 21:34:07,428 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 29 transitions, 95 flow [2023-11-23 21:34:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:07,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:34:07,428 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] [2023-11-23 21:34:07,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:34:07,430 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-23 21:34:07,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:34:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1055246133, now seen corresponding path program 6 times [2023-11-23 21:34:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:34:07,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754099128] [2023-11-23 21:34:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:34:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:34:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:34:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:34:08,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:34:08,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754099128] [2023-11-23 21:34:08,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754099128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:34:08,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:34:08,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:34:08,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147995633] [2023-11-23 21:34:08,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:34:08,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:34:08,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:34:08,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:34:08,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:34:08,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-23 21:34:08,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 29 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:08,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:34:08,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-23 21:34:08,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:34:09,112 INFO L124 PetriNetUnfolderBase]: 52/134 cut-off events. [2023-11-23 21:34:09,113 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-23 21:34:09,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 134 events. 52/134 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 364 event pairs, 10 based on Foata normal form. 1/134 useless extension candidates. Maximal degree in co-relation 352. Up to 54 conditions per place. [2023-11-23 21:34:09,114 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-11-23 21:34:09,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 37 transitions, 169 flow [2023-11-23 21:34:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:34:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:34:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2023-11-23 21:34:09,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7106382978723405 [2023-11-23 21:34:09,117 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 167 transitions. [2023-11-23 21:34:09,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 167 transitions. [2023-11-23 21:34:09,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:34:09,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 167 transitions. [2023-11-23 21:34:09,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 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) [2023-11-23 21:34:09,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:09,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 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) [2023-11-23 21:34:09,123 INFO L175 Difference]: Start difference. First operand has 57 places, 29 transitions, 95 flow. Second operand 5 states and 167 transitions. [2023-11-23 21:34:09,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 37 transitions, 169 flow [2023-11-23 21:34:09,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 155 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-23 21:34:09,125 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-23 21:34:09,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-23 21:34:09,129 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-23 21:34:09,130 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-23 21:34:09,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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) [2023-11-23 21:34:09,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-23 21:34:09,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-23 21:34:09,134 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-23 21:34:09,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-23 21:34:09,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-23 21:34:09,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-23 21:34:09,135 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-23 21:34:09,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-23 21:34:09,136 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-23 21:34:09,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-23 21:34:09,138 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-23 21:34:09,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-23 21:34:09,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-23 21:34:09,139 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-23 21:34:09,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-23 21:34:09,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-23 21:34:09,140 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-23 21:34:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:34:09,141 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-11-23 21:34:09,146 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 21:34:09,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:34:09,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:34:09 BasicIcfg [2023-11-23 21:34:09,156 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:34:09,156 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:34:09,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:34:09,157 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:34:09,158 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:33:53" (3/4) ... [2023-11-23 21:34:09,160 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:34:09,165 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 21:34:09,165 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 21:34:09,166 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-23 21:34:09,177 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 92 nodes and edges [2023-11-23 21:34:09,178 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-23 21:34:09,179 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:34:09,179 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 21:34:09,329 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 21:34:09,329 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 21:34:09,330 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:34:09,331 INFO L158 Benchmark]: Toolchain (without parser) took 17710.91ms. Allocated memory was 163.6MB in the beginning and 285.2MB in the end (delta: 121.6MB). Free memory was 131.4MB in the beginning and 223.5MB in the end (delta: -92.2MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,331 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 104.9MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:34:09,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.63ms. Allocated memory is still 163.6MB. Free memory was 130.8MB in the beginning and 119.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.97ms. Allocated memory is still 163.6MB. Free memory was 119.4MB in the beginning and 116.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,333 INFO L158 Benchmark]: Boogie Preprocessor took 73.04ms. Allocated memory is still 163.6MB. Free memory was 116.7MB in the beginning and 115.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:34:09,333 INFO L158 Benchmark]: RCFGBuilder took 1369.69ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 74.8MB in the end (delta: 40.4MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,335 INFO L158 Benchmark]: TraceAbstraction took 15533.69ms. Allocated memory was 163.6MB in the beginning and 285.2MB in the end (delta: 121.6MB). Free memory was 73.9MB in the beginning and 228.8MB in the end (delta: -154.8MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,336 INFO L158 Benchmark]: Witness Printer took 173.38ms. Allocated memory is still 285.2MB. Free memory was 228.8MB in the beginning and 223.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 21:34:09,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 104.9MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.63ms. Allocated memory is still 163.6MB. Free memory was 130.8MB in the beginning and 119.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.97ms. Allocated memory is still 163.6MB. Free memory was 119.4MB in the beginning and 116.7MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.04ms. Allocated memory is still 163.6MB. Free memory was 116.7MB in the beginning and 115.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1369.69ms. Allocated memory is still 163.6MB. Free memory was 115.2MB in the beginning and 74.8MB in the end (delta: 40.4MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * TraceAbstraction took 15533.69ms. Allocated memory was 163.6MB in the beginning and 285.2MB in the end (delta: 121.6MB). Free memory was 73.9MB in the beginning and 228.8MB in the end (delta: -154.8MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. * Witness Printer took 173.38ms. Allocated memory is still 285.2MB. Free memory was 228.8MB in the beginning and 223.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: -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: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 17 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: 15.3s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 440 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 283 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 851 IncrementalHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 29 mSDtfsCounter, 851 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=10, InterpolantAutomatonStates: 48, 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, 0.5s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 5838 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 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 21:34:09,398 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e27c96a5-f2f9-46fa-8426-d983c7ae5286/bin/uautomizer-verify-zZY32mL2XJ/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