./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:39:15,061 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:39:15,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:39:15,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:39:15,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:39:15,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:39:15,161 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:39:15,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:39:15,162 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:39:15,163 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:39:15,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:39:15,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:39:15,165 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:39:15,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:39:15,167 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:39:15,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:39:15,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:39:15,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:39:15,169 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:39:15,170 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:39:15,170 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:39:15,171 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:39:15,171 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:39:15,172 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:39:15,172 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:39:15,173 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:39:15,173 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:39:15,174 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:39:15,174 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:39:15,175 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:15,176 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:39:15,176 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:39:15,176 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:39:15,177 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:39:15,177 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:39:15,177 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:39:15,178 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:39:15,178 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:39:15,178 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_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 035ec41aa2053cde8ee24830f9eb7cf444ea0c142ead33ef0c1fe95c3a7de39e [2023-11-19 07:39:15,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:39:15,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:39:15,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:39:15,451 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:39:15,451 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:39:15,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-19 07:39:18,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:39:18,890 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:39:18,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/sv-benchmarks/c/pthread-wmm/mix020.oepc.i [2023-11-19 07:39:18,919 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/data/2151b658a/79476971493b45f0b21b8da75acdb53a/FLAGdabfb2253 [2023-11-19 07:39:18,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/data/2151b658a/79476971493b45f0b21b8da75acdb53a [2023-11-19 07:39:18,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:39:18,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:39:18,939 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:18,939 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:39:18,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:39:18,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:18" (1/1) ... [2023-11-19 07:39:18,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f4d777c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:18, skipping insertion in model container [2023-11-19 07:39:18,947 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:39:18" (1/1) ... [2023-11-19 07:39:19,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:39:19,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:19,407 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:39:19,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:39:19,577 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:19,578 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:39:19,587 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:39:19,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19 WrapperNode [2023-11-19 07:39:19,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:39:19,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:19,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:39:19,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:39:19,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,687 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-19 07:39:19,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:39:19,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:39:19,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:39:19,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:39:19,701 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,717 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,763 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:39:19,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:39:19,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:39:19,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:39:19,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (1/1) ... [2023-11-19 07:39:19,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:39:19,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:39:19,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:39:19,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bace934-9958-4b5a-b3a3-b9babf3edcbf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:39:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:39:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:39:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:39:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:39:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:39:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:39:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:39:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:39:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:39:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:39:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:39:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:39:19,867 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:39:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:39:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:39:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:39:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:39:19,871 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:39:20,076 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:39:20,079 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:39:20,534 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:39:20,695 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:39:20,695 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:39:20,700 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:20 BoogieIcfgContainer [2023-11-19 07:39:20,700 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:39:20,703 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:39:20,703 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:39:20,707 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:39:20,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:39:18" (1/3) ... [2023-11-19 07:39:20,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578a2f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:20, skipping insertion in model container [2023-11-19 07:39:20,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:39:19" (2/3) ... [2023-11-19 07:39:20,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@578a2f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:39:20, skipping insertion in model container [2023-11-19 07:39:20,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:39:20" (3/3) ... [2023-11-19 07:39:20,710 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2023-11-19 07:39:20,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:39:20,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:39:20,732 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:39:20,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:39:20,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:39:20,933 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:39:20,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:20,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 4/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-19 07:39:20,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:39:20,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 148 transitions, 308 flow [2023-11-19 07:39:20,963 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:39:21,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:39:21,034 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:39:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 148 transitions, 308 flow [2023-11-19 07:39:21,121 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:39:21,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:21,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 4/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-19 07:39:21,129 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-11-19 07:39:27,038 INFO L134 LiptonReduction]: Checked pairs total: 11306 [2023-11-19 07:39:27,039 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-11-19 07:39:27,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:39:27,064 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;@64fa9298, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:39:27,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:39:27,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:39:27,066 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:39:27,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:27,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:27,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:39:27,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:27,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:27,074 INFO L85 PathProgramCache]: Analyzing trace with hash 653, now seen corresponding path program 1 times [2023-11-19 07:39:27,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:27,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583090362] [2023-11-19 07:39:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:27,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583090362] [2023-11-19 07:39:27,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583090362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:27,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:27,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:39:27,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950654788] [2023-11-19 07:39:27,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:27,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:39:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:39:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:39:27,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-11-19 07:39:27,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:27,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:27,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-11-19 07:39:27,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:29,568 INFO L124 PetriNetUnfolderBase]: 8719/11811 cut-off events. [2023-11-19 07:39:29,569 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-11-19 07:39:29,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23759 conditions, 11811 events. 8719/11811 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 61281 event pairs, 8719 based on Foata normal form. 0/10304 useless extension candidates. Maximal degree in co-relation 23747. Up to 11731 conditions per place. [2023-11-19 07:39:29,688 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-19 07:39:29,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 132 flow [2023-11-19 07:39:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:39:29,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:39:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 307 transitions. [2023-11-19 07:39:29,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256849315068494 [2023-11-19 07:39:29,705 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 307 transitions. [2023-11-19 07:39:29,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 307 transitions. [2023-11-19 07:39:29,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:29,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 307 transitions. [2023-11-19 07:39:29,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 153.5) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:29,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:29,722 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:29,724 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 307 transitions. [2023-11-19 07:39:29,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 132 flow [2023-11-19 07:39:29,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:39:29,737 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-19 07:39:29,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-19 07:39:29,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-19 07:39:29,743 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-19 07:39:29,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 135.5) internal successors, (271), 2 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:29,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:29,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:39:29,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:39:29,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:29,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash 642049, now seen corresponding path program 1 times [2023-11-19 07:39:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338096889] [2023-11-19 07:39:29,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:29,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:30,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:30,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338096889] [2023-11-19 07:39:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338096889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:30,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:30,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:30,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246254056] [2023-11-19 07:39:30,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:30,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:30,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 292 [2023-11-19 07:39:30,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:30,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:30,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 292 [2023-11-19 07:39:30,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:31,964 INFO L124 PetriNetUnfolderBase]: 6855/9882 cut-off events. [2023-11-19 07:39:31,964 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:39:31,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19319 conditions, 9882 events. 6855/9882 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 59731 event pairs, 1263 based on Foata normal form. 0/9221 useless extension candidates. Maximal degree in co-relation 19316. Up to 7399 conditions per place. [2023-11-19 07:39:32,045 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 45 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2023-11-19 07:39:32,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 218 flow [2023-11-19 07:39:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:32,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:32,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-19 07:39:32,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159817351598174 [2023-11-19 07:39:32,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-19 07:39:32,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-19 07:39:32,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:32,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-19 07:39:32,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,059 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 452 transitions. [2023-11-19 07:39:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 218 flow [2023-11-19 07:39:32,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 218 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:32,062 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-19 07:39:32,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-19 07:39:32,063 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-19 07:39:32,063 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-19 07:39:32,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:32,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:32,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:39:32,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:32,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1392732217, now seen corresponding path program 1 times [2023-11-19 07:39:32,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:32,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089048650] [2023-11-19 07:39:32,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089048650] [2023-11-19 07:39:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089048650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:39:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106766283] [2023-11-19 07:39:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:32,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:39:32,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:39:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:39:32,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:39:32,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:32,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:32,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:39:32,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:36,524 INFO L124 PetriNetUnfolderBase]: 23679/31838 cut-off events. [2023-11-19 07:39:36,524 INFO L125 PetriNetUnfolderBase]: For 1591/1591 co-relation queries the response was YES. [2023-11-19 07:39:36,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65741 conditions, 31838 events. 23679/31838 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 171688 event pairs, 8531 based on Foata normal form. 0/31108 useless extension candidates. Maximal degree in co-relation 65737. Up to 20163 conditions per place. [2023-11-19 07:39:36,733 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 49 selfloop transitions, 8 changer transitions 0/57 dead transitions. [2023-11-19 07:39:36,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 248 flow [2023-11-19 07:39:36,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:39:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:39:36,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 433 transitions. [2023-11-19 07:39:36,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942922374429224 [2023-11-19 07:39:36,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 433 transitions. [2023-11-19 07:39:36,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 433 transitions. [2023-11-19 07:39:36,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:36,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 433 transitions. [2023-11-19 07:39:36,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.33333333333334) internal successors, (433), 3 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:36,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:36,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:36,744 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 433 transitions. [2023-11-19 07:39:36,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 248 flow [2023-11-19 07:39:36,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:36,747 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 130 flow [2023-11-19 07:39:36,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-19 07:39:36,749 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-19 07:39:36,750 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 130 flow [2023-11-19 07:39:36,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:36,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:36,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:36,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:39:36,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:36,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash -225027520, now seen corresponding path program 1 times [2023-11-19 07:39:36,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526950407] [2023-11-19 07:39:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:37,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:37,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526950407] [2023-11-19 07:39:37,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526950407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:37,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:37,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:37,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932775153] [2023-11-19 07:39:37,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:37,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:37,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:37,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:39:37,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:37,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:37,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:39:37,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:41,142 INFO L124 PetriNetUnfolderBase]: 22597/30388 cut-off events. [2023-11-19 07:39:41,142 INFO L125 PetriNetUnfolderBase]: For 11648/11648 co-relation queries the response was YES. [2023-11-19 07:39:41,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75752 conditions, 30388 events. 22597/30388 cut-off events. For 11648/11648 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 159209 event pairs, 6072 based on Foata normal form. 230/30618 useless extension candidates. Maximal degree in co-relation 75747. Up to 13783 conditions per place. [2023-11-19 07:39:41,331 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 62 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2023-11-19 07:39:41,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 370 flow [2023-11-19 07:39:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:41,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-11-19 07:39:41,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2023-11-19 07:39:41,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-11-19 07:39:41,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-11-19 07:39:41,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:41,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-11-19 07:39:41,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:41,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:41,343 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:41,343 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 130 flow. Second operand 4 states and 566 transitions. [2023-11-19 07:39:41,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 370 flow [2023-11-19 07:39:41,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 71 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:39:41,480 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 182 flow [2023-11-19 07:39:41,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-19 07:39:41,483 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-19 07:39:41,483 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 182 flow [2023-11-19 07:39:41,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:41,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:41,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:41,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:39:41,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:41,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash -225024839, now seen corresponding path program 1 times [2023-11-19 07:39:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:41,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915215552] [2023-11-19 07:39:41,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:41,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:42,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:42,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915215552] [2023-11-19 07:39:42,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915215552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:42,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:39:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377757588] [2023-11-19 07:39:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:42,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:39:42,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:39:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:39:42,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 292 [2023-11-19 07:39:42,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:42,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:42,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 292 [2023-11-19 07:39:42,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:45,719 INFO L124 PetriNetUnfolderBase]: 17976/25347 cut-off events. [2023-11-19 07:39:45,719 INFO L125 PetriNetUnfolderBase]: For 14994/15441 co-relation queries the response was YES. [2023-11-19 07:39:45,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63750 conditions, 25347 events. 17976/25347 cut-off events. For 14994/15441 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 151022 event pairs, 2818 based on Foata normal form. 1133/26167 useless extension candidates. Maximal degree in co-relation 63743. Up to 16628 conditions per place. [2023-11-19 07:39:45,885 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 56 selfloop transitions, 6 changer transitions 20/91 dead transitions. [2023-11-19 07:39:45,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 91 transitions, 486 flow [2023-11-19 07:39:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:39:45,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:39:45,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 891 transitions. [2023-11-19 07:39:45,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43590998043052837 [2023-11-19 07:39:45,891 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 891 transitions. [2023-11-19 07:39:45,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 891 transitions. [2023-11-19 07:39:45,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:45,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 891 transitions. [2023-11-19 07:39:45,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:45,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:45,901 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:45,902 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 182 flow. Second operand 7 states and 891 transitions. [2023-11-19 07:39:45,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 91 transitions, 486 flow [2023-11-19 07:39:45,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 91 transitions, 481 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:46,000 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 192 flow [2023-11-19 07:39:46,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=192, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-19 07:39:46,005 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-11-19 07:39:46,005 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 192 flow [2023-11-19 07:39:46,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:46,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:46,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:46,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:39:46,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:46,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1530762104, now seen corresponding path program 1 times [2023-11-19 07:39:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:46,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989112295] [2023-11-19 07:39:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:46,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:46,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:46,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989112295] [2023-11-19 07:39:46,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989112295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:46,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:46,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:39:46,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688585554] [2023-11-19 07:39:46,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:46,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:46,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:46,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:46,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:39:46,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:46,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:46,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:39:46,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:49,679 INFO L124 PetriNetUnfolderBase]: 19100/25811 cut-off events. [2023-11-19 07:39:49,679 INFO L125 PetriNetUnfolderBase]: For 19073/19073 co-relation queries the response was YES. [2023-11-19 07:39:49,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70695 conditions, 25811 events. 19100/25811 cut-off events. For 19073/19073 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 136283 event pairs, 2894 based on Foata normal form. 40/25851 useless extension candidates. Maximal degree in co-relation 70685. Up to 15757 conditions per place. [2023-11-19 07:39:49,883 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 69 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2023-11-19 07:39:49,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 546 flow [2023-11-19 07:39:49,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:49,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:49,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 576 transitions. [2023-11-19 07:39:49,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-11-19 07:39:49,887 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 576 transitions. [2023-11-19 07:39:49,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 576 transitions. [2023-11-19 07:39:49,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:49,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 576 transitions. [2023-11-19 07:39:49,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.0) internal successors, (576), 4 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:49,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:49,895 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:49,895 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 192 flow. Second operand 4 states and 576 transitions. [2023-11-19 07:39:49,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 546 flow [2023-11-19 07:39:50,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 87 transitions, 516 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-19 07:39:50,117 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 340 flow [2023-11-19 07:39:50,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-19 07:39:50,118 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-19 07:39:50,118 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 340 flow [2023-11-19 07:39:50,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:50,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:50,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:50,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:39:50,120 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:50,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 209037155, now seen corresponding path program 1 times [2023-11-19 07:39:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611302352] [2023-11-19 07:39:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:50,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:50,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:50,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611302352] [2023-11-19 07:39:50,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611302352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:50,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:50,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:50,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870970247] [2023-11-19 07:39:50,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:50,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:50,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:50,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:50,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:50,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:39:50,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:50,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:50,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:39:50,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:52,480 INFO L124 PetriNetUnfolderBase]: 10874/15962 cut-off events. [2023-11-19 07:39:52,480 INFO L125 PetriNetUnfolderBase]: For 19088/20024 co-relation queries the response was YES. [2023-11-19 07:39:52,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42916 conditions, 15962 events. 10874/15962 cut-off events. For 19088/20024 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 98943 event pairs, 2059 based on Foata normal form. 1230/16902 useless extension candidates. Maximal degree in co-relation 42905. Up to 11053 conditions per place. [2023-11-19 07:39:52,618 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 82 selfloop transitions, 10 changer transitions 2/111 dead transitions. [2023-11-19 07:39:52,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 781 flow [2023-11-19 07:39:52,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:39:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:39:52,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 699 transitions. [2023-11-19 07:39:52,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876712328767124 [2023-11-19 07:39:52,623 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 699 transitions. [2023-11-19 07:39:52,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 699 transitions. [2023-11-19 07:39:52,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:52,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 699 transitions. [2023-11-19 07:39:52,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,631 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,632 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 340 flow. Second operand 5 states and 699 transitions. [2023-11-19 07:39:52,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 781 flow [2023-11-19 07:39:52,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 111 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:39:52,686 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 415 flow [2023-11-19 07:39:52,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-11-19 07:39:52,688 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-19 07:39:52,688 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 415 flow [2023-11-19 07:39:52,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:52,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:52,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:39:52,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:52,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1716643073, now seen corresponding path program 1 times [2023-11-19 07:39:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:52,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582703635] [2023-11-19 07:39:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:52,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:52,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:52,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582703635] [2023-11-19 07:39:52,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582703635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:52,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:52,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:52,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401102305] [2023-11-19 07:39:52,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:52,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:52,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:52,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2023-11-19 07:39:52,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 415 flow. Second operand has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:52,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:52,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2023-11-19 07:39:52,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:39:56,524 INFO L124 PetriNetUnfolderBase]: 17293/25565 cut-off events. [2023-11-19 07:39:56,524 INFO L125 PetriNetUnfolderBase]: For 46388/47039 co-relation queries the response was YES. [2023-11-19 07:39:56,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86568 conditions, 25565 events. 17293/25565 cut-off events. For 46388/47039 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 168512 event pairs, 3138 based on Foata normal form. 542/25895 useless extension candidates. Maximal degree in co-relation 86553. Up to 12504 conditions per place. [2023-11-19 07:39:56,738 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 85 selfloop transitions, 4 changer transitions 7/110 dead transitions. [2023-11-19 07:39:56,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 110 transitions, 864 flow [2023-11-19 07:39:56,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:39:56,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:39:56,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-11-19 07:39:56,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957191780821918 [2023-11-19 07:39:56,742 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-11-19 07:39:56,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-11-19 07:39:56,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:39:56,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-11-19 07:39:56,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:56,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:56,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:56,749 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 415 flow. Second operand 4 states and 579 transitions. [2023-11-19 07:39:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 110 transitions, 864 flow [2023-11-19 07:39:56,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 110 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:39:56,933 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 433 flow [2023-11-19 07:39:56,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=433, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-11-19 07:39:56,934 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 12 predicate places. [2023-11-19 07:39:56,934 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 433 flow [2023-11-19 07:39:56,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 135.25) internal successors, (541), 4 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:56,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:39:56,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:39:56,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:39:56,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:39:56,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:39:56,936 INFO L85 PathProgramCache]: Analyzing trace with hash 508768065, now seen corresponding path program 1 times [2023-11-19 07:39:56,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:39:56,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205029971] [2023-11-19 07:39:56,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:39:56,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:39:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:39:57,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:39:57,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:39:57,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205029971] [2023-11-19 07:39:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205029971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:39:57,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:39:57,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:39:57,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401158500] [2023-11-19 07:39:57,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:39:57,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:39:57,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:39:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:39:57,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:39:57,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:39:57,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:39:57,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:39:57,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:39:57,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:02,755 INFO L124 PetriNetUnfolderBase]: 27363/39105 cut-off events. [2023-11-19 07:40:02,755 INFO L125 PetriNetUnfolderBase]: For 84760/84760 co-relation queries the response was YES. [2023-11-19 07:40:02,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138242 conditions, 39105 events. 27363/39105 cut-off events. For 84760/84760 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 248202 event pairs, 7437 based on Foata normal form. 204/39309 useless extension candidates. Maximal degree in co-relation 138225. Up to 20696 conditions per place. [2023-11-19 07:40:03,061 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 85 selfloop transitions, 21 changer transitions 7/113 dead transitions. [2023-11-19 07:40:03,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 113 transitions, 907 flow [2023-11-19 07:40:03,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-11-19 07:40:03,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957191780821918 [2023-11-19 07:40:03,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-11-19 07:40:03,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-11-19 07:40:03,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:03,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-11-19 07:40:03,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,070 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 433 flow. Second operand 4 states and 579 transitions. [2023-11-19 07:40:03,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 113 transitions, 907 flow [2023-11-19 07:40:03,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 113 transitions, 904 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:03,291 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 560 flow [2023-11-19 07:40:03,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=560, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-11-19 07:40:03,292 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2023-11-19 07:40:03,292 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 560 flow [2023-11-19 07:40:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:03,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:03,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:03,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:40:03,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:03,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1587373663, now seen corresponding path program 1 times [2023-11-19 07:40:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:03,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100976465] [2023-11-19 07:40:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:03,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:03,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:03,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100976465] [2023-11-19 07:40:03,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100976465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:03,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:40:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445751309] [2023-11-19 07:40:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:03,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:03,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:40:03,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 560 flow. Second operand has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:03,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:03,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:40:03,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:06,554 INFO L124 PetriNetUnfolderBase]: 9883/15704 cut-off events. [2023-11-19 07:40:06,555 INFO L125 PetriNetUnfolderBase]: For 29577/30151 co-relation queries the response was YES. [2023-11-19 07:40:06,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51941 conditions, 15704 events. 9883/15704 cut-off events. For 29577/30151 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 109962 event pairs, 1590 based on Foata normal form. 1354/16814 useless extension candidates. Maximal degree in co-relation 51922. Up to 6922 conditions per place. [2023-11-19 07:40:06,660 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 101 selfloop transitions, 14 changer transitions 0/135 dead transitions. [2023-11-19 07:40:06,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 135 transitions, 1198 flow [2023-11-19 07:40:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 841 transitions. [2023-11-19 07:40:06,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4800228310502283 [2023-11-19 07:40:06,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 841 transitions. [2023-11-19 07:40:06,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 841 transitions. [2023-11-19 07:40:06,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:06,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 841 transitions. [2023-11-19 07:40:06,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.16666666666666) internal successors, (841), 6 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 292.0) internal successors, (2044), 7 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,672 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 560 flow. Second operand 6 states and 841 transitions. [2023-11-19 07:40:06,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 135 transitions, 1198 flow [2023-11-19 07:40:06,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 135 transitions, 1182 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:06,818 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 644 flow [2023-11-19 07:40:06,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=644, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-11-19 07:40:06,819 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2023-11-19 07:40:06,819 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 644 flow [2023-11-19 07:40:06,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.0) internal successors, (640), 5 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:06,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:06,820 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] [2023-11-19 07:40:06,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:06,820 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:40:06,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:06,821 INFO L85 PathProgramCache]: Analyzing trace with hash -892336857, now seen corresponding path program 1 times [2023-11-19 07:40:06,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:06,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478857537] [2023-11-19 07:40:06,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478857537] [2023-11-19 07:40:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478857537] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:07,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:07,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:07,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378799738] [2023-11-19 07:40:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:40:07,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:40:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:40:07,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-19 07:40:07,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 644 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:07,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:07,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-19 07:40:07,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:09,539 INFO L124 PetriNetUnfolderBase]: 7610/12135 cut-off events. [2023-11-19 07:40:09,539 INFO L125 PetriNetUnfolderBase]: For 26160/26554 co-relation queries the response was YES. [2023-11-19 07:40:09,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46589 conditions, 12135 events. 7610/12135 cut-off events. For 26160/26554 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 83106 event pairs, 1067 based on Foata normal form. 522/12445 useless extension candidates. Maximal degree in co-relation 46567. Up to 4766 conditions per place. [2023-11-19 07:40:09,652 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 112 selfloop transitions, 23 changer transitions 11/166 dead transitions. [2023-11-19 07:40:09,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 166 transitions, 1507 flow [2023-11-19 07:40:09,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:40:09,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:40:09,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1120 transitions. [2023-11-19 07:40:09,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2023-11-19 07:40:09,658 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1120 transitions. [2023-11-19 07:40:09,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1120 transitions. [2023-11-19 07:40:09,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:09,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1120 transitions. [2023-11-19 07:40:09,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:09,670 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 644 flow. Second operand 8 states and 1120 transitions. [2023-11-19 07:40:09,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 166 transitions, 1507 flow