./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/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_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/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_08111c2c-8611-4c46-8cd7-ba0a61451392/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 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:53:58,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:53:58,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:53:58,712 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:53:58,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:53:58,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:53:58,760 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:53:58,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:53:58,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:53:58,768 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:53:58,770 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:53:58,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:53:58,771 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:53:58,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:53:58,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:53:58,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:53:58,775 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:53:58,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:53:58,776 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:53:58,777 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:53:58,777 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:53:58,778 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:53:58,779 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:53:58,779 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:53:58,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:53:58,780 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:53:58,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:53:58,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:53:58,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:53:58,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:53:58,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:53:58,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:53:58,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:53:58,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:53:58,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:53:58,787 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:53:58,787 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:53:58,788 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:53:58,788 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_08111c2c-8611-4c46-8cd7-ba0a61451392/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bc57c42fd552df471a50a3f823d776d12ae5a02a1da1686aaab749af4f270bf [2023-11-19 07:53:59,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:53:59,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:53:59,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:53:59,188 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:53:59,188 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:53:59,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2023-11-19 07:54:02,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:02,629 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:02,630 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/sv-benchmarks/c/pthread-wmm/mix018_tso.oepc.i [2023-11-19 07:54:02,662 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/data/8d132fc6f/2bcabda335d34c68824b1c41b42f9ec8/FLAGc3a42dd4d [2023-11-19 07:54:02,680 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/data/8d132fc6f/2bcabda335d34c68824b1c41b42f9ec8 [2023-11-19 07:54:02,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:02,693 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:02,697 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:02,697 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:02,703 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:02,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:02" (1/1) ... [2023-11-19 07:54:02,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43588245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:02, skipping insertion in model container [2023-11-19 07:54:02,707 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:02" (1/1) ... [2023-11-19 07:54:02,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:03,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:03,305 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:03,372 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:03,411 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:03,411 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:03,419 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:03,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03 WrapperNode [2023-11-19 07:54:03,420 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:03,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:03,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:03,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:03,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,475 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,536 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 167 [2023-11-19 07:54:03,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:03,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:03,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:03,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:03,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,558 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,586 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:03,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:03,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:03,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:03,614 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (1/1) ... [2023-11-19 07:54:03,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:03,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:03,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:03,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08111c2c-8611-4c46-8cd7-ba0a61451392/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:54:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:54:03,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:54:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:54:03,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:54:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:54:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:54:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:54:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:54:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:54:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:03,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:03,722 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 07:54:03,879 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:03,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:04,389 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:04,625 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:04,627 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:54:04,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:04 BoogieIcfgContainer [2023-11-19 07:54:04,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:04,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:04,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:04,645 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:04,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:02" (1/3) ... [2023-11-19 07:54:04,647 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d982987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:04, skipping insertion in model container [2023-11-19 07:54:04,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:03" (2/3) ... [2023-11-19 07:54:04,649 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d982987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:04, skipping insertion in model container [2023-11-19 07:54:04,649 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:04" (3/3) ... [2023-11-19 07:54:04,651 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018_tso.oepc.i [2023-11-19 07:54:04,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:04,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:54:04,676 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:04,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:54:04,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:54:04,984 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:54:04,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:04,998 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 122 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 07:54:04,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 152 transitions, 320 flow [2023-11-19 07:54:05,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 148 transitions, 308 flow [2023-11-19 07:54:05,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:05,022 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:54:05,025 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 148 transitions, 308 flow [2023-11-19 07:54:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 148 transitions, 308 flow [2023-11-19 07:54:05,071 INFO L124 PetriNetUnfolderBase]: 4/148 cut-off events. [2023-11-19 07:54:05,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:05,074 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 122 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 07:54:05,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 4212 [2023-11-19 07:54:13,471 INFO L134 LiptonReduction]: Checked pairs total: 11222 [2023-11-19 07:54:13,471 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-11-19 07:54:13,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:13,495 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;@4bfe1e7b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:13,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:54:13,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:13,498 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:54:13,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:13,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:13,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:54:13,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:13,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:13,506 INFO L85 PathProgramCache]: Analyzing trace with hash 657, now seen corresponding path program 1 times [2023-11-19 07:54:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112230385] [2023-11-19 07:54:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:13,642 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 07:54:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:13,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112230385] [2023-11-19 07:54:13,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112230385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:13,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:13,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:54:13,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317537673] [2023-11-19 07:54:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:13,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:13,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 296 [2023-11-19 07:54:13,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 90 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 07:54:13,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:13,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 296 [2023-11-19 07:54:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:15,471 INFO L124 PetriNetUnfolderBase]: 5973/8262 cut-off events. [2023-11-19 07:54:15,472 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-19 07:54:15,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16580 conditions, 8262 events. 5973/8262 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 43558 event pairs, 5973 based on Foata normal form. 0/7018 useless extension candidates. Maximal degree in co-relation 16568. Up to 8103 conditions per place. [2023-11-19 07:54:15,557 INFO L140 encePairwiseOnDemand]: 288/296 looper letters, 26 selfloop transitions, 0 changer transitions 0/31 dead transitions. [2023-11-19 07:54:15,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 31 transitions, 126 flow [2023-11-19 07:54:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2023-11-19 07:54:15,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2023-11-19 07:54:15,581 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2023-11-19 07:54:15,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2023-11-19 07:54:15,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:15,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2023-11-19 07:54:15,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 07:54:15,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 07:54:15,602 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 296.0) internal successors, (888), 3 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 07:54:15,604 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 90 flow. Second operand 2 states and 304 transitions. [2023-11-19 07:54:15,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 31 transitions, 126 flow [2023-11-19 07:54:15,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:15,614 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 70 flow [2023-11-19 07:54:15,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-19 07:54:15,622 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -11 predicate places. [2023-11-19 07:54:15,622 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 70 flow [2023-11-19 07:54:15,623 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 07:54:15,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:15,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:54:15,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:15,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:15,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:15,627 INFO L85 PathProgramCache]: Analyzing trace with hash 622684753, now seen corresponding path program 1 times [2023-11-19 07:54:15,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:15,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144882623] [2023-11-19 07:54:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:15,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:16,055 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 07:54:16,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:16,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144882623] [2023-11-19 07:54:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144882623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:16,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40616584] [2023-11-19 07:54:16,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:16,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:16,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:16,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:16,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:16,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 296 [2023-11-19 07:54:16,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 07:54:16,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:16,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 296 [2023-11-19 07:54:16,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:17,421 INFO L124 PetriNetUnfolderBase]: 4695/6858 cut-off events. [2023-11-19 07:54:17,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:17,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13431 conditions, 6858 events. 4695/6858 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 40491 event pairs, 861 based on Foata normal form. 0/6293 useless extension candidates. Maximal degree in co-relation 13428. Up to 5107 conditions per place. [2023-11-19 07:54:17,474 INFO L140 encePairwiseOnDemand]: 293/296 looper letters, 39 selfloop transitions, 2 changer transitions 2/48 dead transitions. [2023-11-19 07:54:17,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 194 flow [2023-11-19 07:54:17,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:17,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:17,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 07:54:17,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022522522522522 [2023-11-19 07:54:17,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 07:54:17,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 07:54:17,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:17,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 07:54:17,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 07:54:17,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:17,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:17,493 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 70 flow. Second operand 3 states and 446 transitions. [2023-11-19 07:54:17,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 194 flow [2023-11-19 07:54:17,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:17,496 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 70 flow [2023-11-19 07:54:17,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-11-19 07:54:17,498 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2023-11-19 07:54:17,498 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 70 flow [2023-11-19 07:54:17,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 07:54:17,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:17,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:17,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:17,506 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:17,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1699240254, now seen corresponding path program 1 times [2023-11-19 07:54:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:17,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127214498] [2023-11-19 07:54:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:17,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:18,386 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 07:54:18,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:18,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127214498] [2023-11-19 07:54:18,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127214498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:18,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:18,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:18,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725532147] [2023-11-19 07:54:18,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:18,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:18,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:18,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 296 [2023-11-19 07:54:18,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 07:54:18,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:18,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 296 [2023-11-19 07:54:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:20,599 INFO L124 PetriNetUnfolderBase]: 9659/13110 cut-off events. [2023-11-19 07:54:20,599 INFO L125 PetriNetUnfolderBase]: For 685/685 co-relation queries the response was YES. [2023-11-19 07:54:20,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27161 conditions, 13110 events. 9659/13110 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 64305 event pairs, 2919 based on Foata normal form. 0/12709 useless extension candidates. Maximal degree in co-relation 27157. Up to 8501 conditions per place. [2023-11-19 07:54:20,685 INFO L140 encePairwiseOnDemand]: 284/296 looper letters, 45 selfloop transitions, 11 changer transitions 0/57 dead transitions. [2023-11-19 07:54:20,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 242 flow [2023-11-19 07:54:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:20,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 549 transitions. [2023-11-19 07:54:20,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46368243243243246 [2023-11-19 07:54:20,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 549 transitions. [2023-11-19 07:54:20,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 549 transitions. [2023-11-19 07:54:20,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:20,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 549 transitions. [2023-11-19 07:54:20,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states 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 07:54:20,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:20,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:20,696 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 70 flow. Second operand 4 states and 549 transitions. [2023-11-19 07:54:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 242 flow [2023-11-19 07:54:20,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 57 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:20,700 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 148 flow [2023-11-19 07:54:20,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-19 07:54:20,701 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-11-19 07:54:20,701 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 148 flow [2023-11-19 07:54:20,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 states 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 07:54:20,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:20,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:20,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:20,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:20,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1699240268, now seen corresponding path program 1 times [2023-11-19 07:54:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:20,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307373833] [2023-11-19 07:54:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:21,590 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 07:54:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:21,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307373833] [2023-11-19 07:54:21,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307373833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:21,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:21,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:21,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70904904] [2023-11-19 07:54:21,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:21,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:21,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 296 [2023-11-19 07:54:21,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 07:54:21,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:21,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 296 [2023-11-19 07:54:21,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:23,844 INFO L124 PetriNetUnfolderBase]: 7798/10945 cut-off events. [2023-11-19 07:54:23,844 INFO L125 PetriNetUnfolderBase]: For 4393/5071 co-relation queries the response was YES. [2023-11-19 07:54:23,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28348 conditions, 10945 events. 7798/10945 cut-off events. For 4393/5071 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 60015 event pairs, 949 based on Foata normal form. 184/10667 useless extension candidates. Maximal degree in co-relation 28342. Up to 7242 conditions per place. [2023-11-19 07:54:23,924 INFO L140 encePairwiseOnDemand]: 290/296 looper letters, 54 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-19 07:54:23,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 66 transitions, 344 flow [2023-11-19 07:54:23,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 757 transitions. [2023-11-19 07:54:23,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42623873873873874 [2023-11-19 07:54:23,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 757 transitions. [2023-11-19 07:54:23,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 757 transitions. [2023-11-19 07:54:23,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:23,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 757 transitions. [2023-11-19 07:54:23,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.16666666666667) internal successors, (757), 6 states have internal predecessors, (757), 0 states have call successors, (0), 0 states 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 07:54:23,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 07:54:23,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 07:54:23,940 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 148 flow. Second operand 6 states and 757 transitions. [2023-11-19 07:54:23,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 66 transitions, 344 flow [2023-11-19 07:54:23,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 66 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:23,960 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 141 flow [2023-11-19 07:54:23,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-11-19 07:54:23,961 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-11-19 07:54:23,961 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 141 flow [2023-11-19 07:54:23,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.83333333333333) internal successors, (713), 6 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 07:54:23,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:23,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:23,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:23,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:23,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash 786705404, now seen corresponding path program 1 times [2023-11-19 07:54:23,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:23,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647313328] [2023-11-19 07:54:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:24,586 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 07:54:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647313328] [2023-11-19 07:54:24,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647313328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:24,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:24,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866442187] [2023-11-19 07:54:24,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:24,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:24,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:24,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:24,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 296 [2023-11-19 07:54:24,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 07:54:24,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:24,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 296 [2023-11-19 07:54:24,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:26,148 INFO L124 PetriNetUnfolderBase]: 8185/11696 cut-off events. [2023-11-19 07:54:26,148 INFO L125 PetriNetUnfolderBase]: For 3365/3716 co-relation queries the response was YES. [2023-11-19 07:54:26,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29316 conditions, 11696 events. 8185/11696 cut-off events. For 3365/3716 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 68165 event pairs, 2280 based on Foata normal form. 43/11276 useless extension candidates. Maximal degree in co-relation 29309. Up to 9608 conditions per place. [2023-11-19 07:54:26,237 INFO L140 encePairwiseOnDemand]: 292/296 looper letters, 47 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-11-19 07:54:26,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 315 flow [2023-11-19 07:54:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:26,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-19 07:54:26,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988738738738739 [2023-11-19 07:54:26,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-19 07:54:26,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-19 07:54:26,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:26,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-19 07:54:26,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 07:54:26,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:26,247 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:26,248 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 141 flow. Second operand 3 states and 443 transitions. [2023-11-19 07:54:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 315 flow [2023-11-19 07:54:26,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 299 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:26,255 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 162 flow [2023-11-19 07:54:26,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-19 07:54:26,257 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-11-19 07:54:26,257 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 162 flow [2023-11-19 07:54:26,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states 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 07:54:26,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:26,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:26,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:26,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash 782791048, now seen corresponding path program 1 times [2023-11-19 07:54:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:26,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413909677] [2023-11-19 07:54:26,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:26,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:27,042 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 07:54:27,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:27,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413909677] [2023-11-19 07:54:27,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413909677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:27,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:27,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:27,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874575737] [2023-11-19 07:54:27,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:27,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:27,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:27,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:27,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:27,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 296 [2023-11-19 07:54:27,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 07:54:27,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:27,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 296 [2023-11-19 07:54:27,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:28,847 INFO L124 PetriNetUnfolderBase]: 6305/8841 cut-off events. [2023-11-19 07:54:28,847 INFO L125 PetriNetUnfolderBase]: For 5731/6850 co-relation queries the response was YES. [2023-11-19 07:54:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23179 conditions, 8841 events. 6305/8841 cut-off events. For 5731/6850 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 47940 event pairs, 1381 based on Foata normal form. 578/8564 useless extension candidates. Maximal degree in co-relation 23171. Up to 8033 conditions per place. [2023-11-19 07:54:28,916 INFO L140 encePairwiseOnDemand]: 291/296 looper letters, 40 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-11-19 07:54:28,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 265 flow [2023-11-19 07:54:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:54:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:54:28,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2023-11-19 07:54:28,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2023-11-19 07:54:28,921 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2023-11-19 07:54:28,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2023-11-19 07:54:28,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:28,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2023-11-19 07:54:28,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states 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 07:54:28,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 07:54:28,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 296.0) internal successors, (2072), 7 states have internal predecessors, (2072), 0 states have call successors, (0), 0 states 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 07:54:28,930 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 162 flow. Second operand 6 states and 732 transitions. [2023-11-19 07:54:28,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 265 flow [2023-11-19 07:54:28,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:28,936 INFO L231 Difference]: Finished difference. Result has 47 places, 30 transitions, 110 flow [2023-11-19 07:54:28,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=110, PETRI_PLACES=47, PETRI_TRANSITIONS=30} [2023-11-19 07:54:28,939 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-11-19 07:54:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 30 transitions, 110 flow [2023-11-19 07:54:28,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 0 states have call successors, (0), 0 states 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 07:54:28,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:28,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:28,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:28,946 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:28,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:28,947 INFO L85 PathProgramCache]: Analyzing trace with hash -636446352, now seen corresponding path program 1 times [2023-11-19 07:54:28,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:28,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235631994] [2023-11-19 07:54:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:29,697 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 07:54:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235631994] [2023-11-19 07:54:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235631994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:29,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:29,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058044944] [2023-11-19 07:54:29,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:29,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:29,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 296 [2023-11-19 07:54:29,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 30 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 07:54:29,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:29,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 296 [2023-11-19 07:54:29,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:30,797 INFO L124 PetriNetUnfolderBase]: 6470/9084 cut-off events. [2023-11-19 07:54:30,797 INFO L125 PetriNetUnfolderBase]: For 4222/4610 co-relation queries the response was YES. [2023-11-19 07:54:30,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23368 conditions, 9084 events. 6470/9084 cut-off events. For 4222/4610 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 46587 event pairs, 2453 based on Foata normal form. 49/8697 useless extension candidates. Maximal degree in co-relation 23361. Up to 7679 conditions per place. [2023-11-19 07:54:30,876 INFO L140 encePairwiseOnDemand]: 287/296 looper letters, 58 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-11-19 07:54:30,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 78 transitions, 422 flow [2023-11-19 07:54:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:30,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-11-19 07:54:30,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2023-11-19 07:54:30,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-11-19 07:54:30,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-11-19 07:54:30,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:30,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-11-19 07:54:30,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 07:54:30,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 07:54:30,887 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 07:54:30,887 INFO L175 Difference]: Start difference. First operand has 47 places, 30 transitions, 110 flow. Second operand 5 states and 728 transitions. [2023-11-19 07:54:30,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 78 transitions, 422 flow [2023-11-19 07:54:30,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 78 transitions, 402 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:30,891 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 243 flow [2023-11-19 07:54:30,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2023-11-19 07:54:30,892 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-11-19 07:54:30,892 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 243 flow [2023-11-19 07:54:30,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 07:54:30,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:30,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:30,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:30,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:30,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:30,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1381865984, now seen corresponding path program 2 times [2023-11-19 07:54:30,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:30,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666231876] [2023-11-19 07:54:30,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:30,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:31,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666231876] [2023-11-19 07:54:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666231876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:31,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921423695] [2023-11-19 07:54:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:31,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 296 [2023-11-19 07:54:31,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 07:54:31,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:31,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 296 [2023-11-19 07:54:31,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:33,221 INFO L124 PetriNetUnfolderBase]: 6881/9680 cut-off events. [2023-11-19 07:54:33,221 INFO L125 PetriNetUnfolderBase]: For 13663/14630 co-relation queries the response was YES. [2023-11-19 07:54:33,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30871 conditions, 9680 events. 6881/9680 cut-off events. For 13663/14630 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 50473 event pairs, 3011 based on Foata normal form. 210/9377 useless extension candidates. Maximal degree in co-relation 30861. Up to 7976 conditions per place. [2023-11-19 07:54:33,303 INFO L140 encePairwiseOnDemand]: 289/296 looper letters, 59 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2023-11-19 07:54:33,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 503 flow [2023-11-19 07:54:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:33,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 581 transitions. [2023-11-19 07:54:33,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4907094594594595 [2023-11-19 07:54:33,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 581 transitions. [2023-11-19 07:54:33,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 581 transitions. [2023-11-19 07:54:33,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:33,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 581 transitions. [2023-11-19 07:54:33,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 07:54:33,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:33,331 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:33,331 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 243 flow. Second operand 4 states and 581 transitions. [2023-11-19 07:54:33,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 503 flow [2023-11-19 07:54:33,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 77 transitions, 501 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:33,345 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 314 flow [2023-11-19 07:54:33,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=314, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-19 07:54:33,349 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-19 07:54:33,349 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 314 flow [2023-11-19 07:54:33,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.6) internal successors, (668), 5 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 07:54:33,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:33,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:33,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:33,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:33,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:33,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1490588980, now seen corresponding path program 1 times [2023-11-19 07:54:33,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:33,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707708423] [2023-11-19 07:54:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:33,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:34,016 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 07:54:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707708423] [2023-11-19 07:54:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707708423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:34,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:34,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:34,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803312191] [2023-11-19 07:54:34,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:34,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:54:34,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:34,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:54:34,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:54:34,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 296 [2023-11-19 07:54:34,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 314 flow. Second operand has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:54:34,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:34,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 296 [2023-11-19 07:54:34,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:35,424 INFO L124 PetriNetUnfolderBase]: 7215/10149 cut-off events. [2023-11-19 07:54:35,425 INFO L125 PetriNetUnfolderBase]: For 22654/23590 co-relation queries the response was YES. [2023-11-19 07:54:35,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35843 conditions, 10149 events. 7215/10149 cut-off events. For 22654/23590 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 53603 event pairs, 2548 based on Foata normal form. 122/9748 useless extension candidates. Maximal degree in co-relation 35831. Up to 7747 conditions per place. [2023-11-19 07:54:35,496 INFO L140 encePairwiseOnDemand]: 290/296 looper letters, 70 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2023-11-19 07:54:35,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 87 transitions, 645 flow [2023-11-19 07:54:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:35,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 587 transitions. [2023-11-19 07:54:35,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49577702702702703 [2023-11-19 07:54:35,501 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 587 transitions. [2023-11-19 07:54:35,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 587 transitions. [2023-11-19 07:54:35,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:35,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 587 transitions. [2023-11-19 07:54:35,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states 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 07:54:35,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:35,508 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:35,508 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 314 flow. Second operand 4 states and 587 transitions. [2023-11-19 07:54:35,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 87 transitions, 645 flow [2023-11-19 07:54:35,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 620 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:35,566 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 373 flow [2023-11-19 07:54:35,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=373, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-11-19 07:54:35,567 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 4 predicate places. [2023-11-19 07:54:35,567 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 373 flow [2023-11-19 07:54:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.5) internal successors, (807), 6 states have internal predecessors, (807), 0 states have call successors, (0), 0 states 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 07:54:35,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:35,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:54:35,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:35,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:35,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1487639671, now seen corresponding path program 1 times [2023-11-19 07:54:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126951889] [2023-11-19 07:54:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:36,345 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 07:54:36,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126951889] [2023-11-19 07:54:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126951889] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:54:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315927933] [2023-11-19 07:54:36,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:36,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:54:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:54:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:36,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 296 [2023-11-19 07:54:36,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 373 flow. Second operand has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states 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 07:54:36,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:36,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 296 [2023-11-19 07:54:36,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:38,193 INFO L124 PetriNetUnfolderBase]: 10554/14239 cut-off events. [2023-11-19 07:54:38,193 INFO L125 PetriNetUnfolderBase]: For 24009/24009 co-relation queries the response was YES. [2023-11-19 07:54:38,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49744 conditions, 14239 events. 10554/14239 cut-off events. For 24009/24009 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 68818 event pairs, 1727 based on Foata normal form. 40/14279 useless extension candidates. Maximal degree in co-relation 49731. Up to 10275 conditions per place. [2023-11-19 07:54:38,278 INFO L140 encePairwiseOnDemand]: 287/296 looper letters, 110 selfloop transitions, 42 changer transitions 0/152 dead transitions. [2023-11-19 07:54:38,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 152 transitions, 1157 flow [2023-11-19 07:54:38,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:54:38,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:54:38,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2023-11-19 07:54:38,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2023-11-19 07:54:38,283 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2023-11-19 07:54:38,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2023-11-19 07:54:38,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:38,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2023-11-19 07:54:38,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 07:54:38,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 296.0) internal successors, (2368), 8 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states 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 07:54:38,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 296.0) internal successors, (2368), 8 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states 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 07:54:38,295 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 373 flow. Second operand 7 states and 966 transitions. [2023-11-19 07:54:38,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 152 transitions, 1157 flow [2023-11-19 07:54:38,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 152 transitions, 1128 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:38,348 INFO L231 Difference]: Finished difference. Result has 63 places, 81 transitions, 735 flow [2023-11-19 07:54:38,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=63, PETRI_TRANSITIONS=81} [2023-11-19 07:54:38,349 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-11-19 07:54:38,349 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 81 transitions, 735 flow [2023-11-19 07:54:38,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 123.28571428571429) internal successors, (863), 7 states have internal predecessors, (863), 0 states have call successors, (0), 0 states 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 07:54:38,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:38,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:38,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:54:38,351 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:38,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:38,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1891563881, now seen corresponding path program 1 times [2023-11-19 07:54:38,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085527942] [2023-11-19 07:54:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:38,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:38,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:38,578 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 07:54:38,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:38,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085527942] [2023-11-19 07:54:38,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085527942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:38,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:38,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:38,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754953814] [2023-11-19 07:54:38,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:38,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:38,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:38,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:38,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:38,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 296 [2023-11-19 07:54:38,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 81 transitions, 735 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 07:54:38,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:38,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 296 [2023-11-19 07:54:38,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:39,800 INFO L124 PetriNetUnfolderBase]: 4452/6630 cut-off events. [2023-11-19 07:54:39,800 INFO L125 PetriNetUnfolderBase]: For 30415/30923 co-relation queries the response was YES. [2023-11-19 07:54:39,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27585 conditions, 6630 events. 4452/6630 cut-off events. For 30415/30923 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 36939 event pairs, 989 based on Foata normal form. 312/6656 useless extension candidates. Maximal degree in co-relation 27570. Up to 5238 conditions per place. [2023-11-19 07:54:39,858 INFO L140 encePairwiseOnDemand]: 290/296 looper letters, 95 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2023-11-19 07:54:39,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 109 transitions, 1139 flow [2023-11-19 07:54:39,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:39,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-19 07:54:39,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2023-11-19 07:54:39,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-19 07:54:39,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-19 07:54:39,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:39,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-19 07:54:39,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states 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 07:54:39,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:39,870 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states 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 07:54:39,870 INFO L175 Difference]: Start difference. First operand has 63 places, 81 transitions, 735 flow. Second operand 3 states and 432 transitions. [2023-11-19 07:54:39,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 109 transitions, 1139 flow [2023-11-19 07:54:39,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 109 transitions, 1095 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:39,913 INFO L231 Difference]: Finished difference. Result has 64 places, 75 transitions, 625 flow [2023-11-19 07:54:39,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=625, PETRI_PLACES=64, PETRI_TRANSITIONS=75} [2023-11-19 07:54:39,914 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-11-19 07:54:39,914 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 75 transitions, 625 flow [2023-11-19 07:54:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 07:54:39,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:39,915 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 07:54:39,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:54:39,916 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:39,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:39,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1303787630, now seen corresponding path program 1 times [2023-11-19 07:54:39,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:39,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781814181] [2023-11-19 07:54:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:40,158 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 07:54:40,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:40,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781814181] [2023-11-19 07:54:40,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781814181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:40,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:40,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273958525] [2023-11-19 07:54:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:40,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:40,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:40,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 296 [2023-11-19 07:54:40,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 75 transitions, 625 flow. Second operand has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:40,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:40,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 296 [2023-11-19 07:54:40,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:40,920 INFO L124 PetriNetUnfolderBase]: 2491/3902 cut-off events. [2023-11-19 07:54:40,920 INFO L125 PetriNetUnfolderBase]: For 16399/16628 co-relation queries the response was YES. [2023-11-19 07:54:40,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16857 conditions, 3902 events. 2491/3902 cut-off events. For 16399/16628 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 21018 event pairs, 590 based on Foata normal form. 338/4094 useless extension candidates. Maximal degree in co-relation 16841. Up to 1759 conditions per place. [2023-11-19 07:54:40,947 INFO L140 encePairwiseOnDemand]: 290/296 looper letters, 112 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2023-11-19 07:54:40,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 130 transitions, 1300 flow [2023-11-19 07:54:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:40,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 578 transitions. [2023-11-19 07:54:40,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48817567567567566 [2023-11-19 07:54:40,951 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 578 transitions. [2023-11-19 07:54:40,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 578 transitions. [2023-11-19 07:54:40,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:40,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 578 transitions. [2023-11-19 07:54:40,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.5) internal successors, (578), 4 states have internal predecessors, (578), 0 states have call successors, (0), 0 states 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 07:54:40,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:40,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 296.0) internal successors, (1480), 5 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states 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 07:54:40,957 INFO L175 Difference]: Start difference. First operand has 64 places, 75 transitions, 625 flow. Second operand 4 states and 578 transitions. [2023-11-19 07:54:40,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 130 transitions, 1300 flow [2023-11-19 07:54:40,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 130 transitions, 1295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:40,978 INFO L231 Difference]: Finished difference. Result has 67 places, 75 transitions, 629 flow [2023-11-19 07:54:40,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=629, PETRI_PLACES=67, PETRI_TRANSITIONS=75} [2023-11-19 07:54:40,979 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-11-19 07:54:40,979 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 75 transitions, 629 flow [2023-11-19 07:54:40,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.75) internal successors, (535), 4 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:40,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:40,980 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 07:54:40,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:54:40,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:40,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -485198220, now seen corresponding path program 1 times [2023-11-19 07:54:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66195995] [2023-11-19 07:54:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:41,642 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 07:54:41,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:41,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66195995] [2023-11-19 07:54:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66195995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:41,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:54:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123853941] [2023-11-19 07:54:41,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:54:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:41,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:54:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:54:41,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 296 [2023-11-19 07:54:41,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 75 transitions, 629 flow. Second operand has 8 states, 8 states have (on average 121.5) internal successors, (972), 8 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:41,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:41,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 296 [2023-11-19 07:54:41,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:43,113 INFO L124 PetriNetUnfolderBase]: 4874/7206 cut-off events. [2023-11-19 07:54:43,113 INFO L125 PetriNetUnfolderBase]: For 25900/25900 co-relation queries the response was YES. [2023-11-19 07:54:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31684 conditions, 7206 events. 4874/7206 cut-off events. For 25900/25900 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 36645 event pairs, 564 based on Foata normal form. 85/7291 useless extension candidates. Maximal degree in co-relation 31667. Up to 3828 conditions per place. [2023-11-19 07:54:43,151 INFO L140 encePairwiseOnDemand]: 285/296 looper letters, 188 selfloop transitions, 38 changer transitions 81/307 dead transitions. [2023-11-19 07:54:43,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 307 transitions, 2896 flow [2023-11-19 07:54:43,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:54:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-19 07:54:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1479 transitions. [2023-11-19 07:54:43,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45423832923832924 [2023-11-19 07:54:43,159 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1479 transitions. [2023-11-19 07:54:43,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1479 transitions. [2023-11-19 07:54:43,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:43,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1479 transitions. [2023-11-19 07:54:43,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 11 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states 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 07:54:43,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 296.0) internal successors, (3552), 12 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states 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 07:54:43,172 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 296.0) internal successors, (3552), 12 states have internal predecessors, (3552), 0 states have call successors, (0), 0 states 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 07:54:43,172 INFO L175 Difference]: Start difference. First operand has 67 places, 75 transitions, 629 flow. Second operand 11 states and 1479 transitions. [2023-11-19 07:54:43,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 307 transitions, 2896 flow [2023-11-19 07:54:43,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 307 transitions, 2782 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-11-19 07:54:43,218 INFO L231 Difference]: Finished difference. Result has 83 places, 96 transitions, 959 flow [2023-11-19 07:54:43,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=959, PETRI_PLACES=83, PETRI_TRANSITIONS=96} [2023-11-19 07:54:43,219 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 31 predicate places. [2023-11-19 07:54:43,219 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 96 transitions, 959 flow [2023-11-19 07:54:43,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.5) internal successors, (972), 8 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:43,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:43,220 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 07:54:43,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:54:43,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:43,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:43,221 INFO L85 PathProgramCache]: Analyzing trace with hash 781724456, now seen corresponding path program 1 times [2023-11-19 07:54:43,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:43,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208286128] [2023-11-19 07:54:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:43,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:43,470 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 07:54:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208286128] [2023-11-19 07:54:43,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208286128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:43,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:43,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:54:43,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832340043] [2023-11-19 07:54:43,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:43,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:54:43,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:43,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:54:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:54:43,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 296 [2023-11-19 07:54:43,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 96 transitions, 959 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 07:54:43,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:43,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 296 [2023-11-19 07:54:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:44,181 INFO L124 PetriNetUnfolderBase]: 2628/4114 cut-off events. [2023-11-19 07:54:44,181 INFO L125 PetriNetUnfolderBase]: For 24120/24382 co-relation queries the response was YES. [2023-11-19 07:54:44,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19702 conditions, 4114 events. 2628/4114 cut-off events. For 24120/24382 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22811 event pairs, 519 based on Foata normal form. 218/4161 useless extension candidates. Maximal degree in co-relation 19677. Up to 2041 conditions per place. [2023-11-19 07:54:44,211 INFO L140 encePairwiseOnDemand]: 290/296 looper letters, 141 selfloop transitions, 13 changer transitions 3/173 dead transitions. [2023-11-19 07:54:44,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 173 transitions, 1999 flow [2023-11-19 07:54:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:44,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-11-19 07:54:44,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48783783783783785 [2023-11-19 07:54:44,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-11-19 07:54:44,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-11-19 07:54:44,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:44,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-11-19 07:54:44,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states 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 07:54:44,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 07:54:44,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 07:54:44,223 INFO L175 Difference]: Start difference. First operand has 83 places, 96 transitions, 959 flow. Second operand 5 states and 722 transitions. [2023-11-19 07:54:44,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 173 transitions, 1999 flow [2023-11-19 07:54:44,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 173 transitions, 1989 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:44,261 INFO L231 Difference]: Finished difference. Result has 86 places, 96 transitions, 965 flow [2023-11-19 07:54:44,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=965, PETRI_PLACES=86, PETRI_TRANSITIONS=96} [2023-11-19 07:54:44,262 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 34 predicate places. [2023-11-19 07:54:44,263 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 96 transitions, 965 flow [2023-11-19 07:54:44,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 07:54:44,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:44,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:44,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:54:44,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:44,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:44,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1999326849, now seen corresponding path program 1 times [2023-11-19 07:54:44,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:44,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150992722] [2023-11-19 07:54:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:44,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:44,954 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 07:54:44,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150992722] [2023-11-19 07:54:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150992722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:44,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:44,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:54:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700707832] [2023-11-19 07:54:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:44,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:54:44,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:54:44,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:54:45,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 296 [2023-11-19 07:54:45,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 96 transitions, 965 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 07:54:45,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:45,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 296 [2023-11-19 07:54:45,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:46,484 INFO L124 PetriNetUnfolderBase]: 4995/7426 cut-off events. [2023-11-19 07:54:46,484 INFO L125 PetriNetUnfolderBase]: For 36687/36687 co-relation queries the response was YES. [2023-11-19 07:54:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37120 conditions, 7426 events. 4995/7426 cut-off events. For 36687/36687 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 38729 event pairs, 335 based on Foata normal form. 14/7440 useless extension candidates. Maximal degree in co-relation 37094. Up to 3526 conditions per place. [2023-11-19 07:54:46,533 INFO L140 encePairwiseOnDemand]: 289/296 looper letters, 153 selfloop transitions, 38 changer transitions 109/300 dead transitions. [2023-11-19 07:54:46,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 300 transitions, 3431 flow [2023-11-19 07:54:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:54:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:54:46,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1567 transitions. [2023-11-19 07:54:46,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411599099099099 [2023-11-19 07:54:46,541 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1567 transitions. [2023-11-19 07:54:46,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1567 transitions. [2023-11-19 07:54:46,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:46,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1567 transitions. [2023-11-19 07:54:46,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 130.58333333333334) internal successors, (1567), 12 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states 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 07:54:46,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 296.0) internal successors, (3848), 13 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 07:54:46,555 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 296.0) internal successors, (3848), 13 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states 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 07:54:46,556 INFO L175 Difference]: Start difference. First operand has 86 places, 96 transitions, 965 flow. Second operand 12 states and 1567 transitions. [2023-11-19 07:54:46,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 300 transitions, 3431 flow [2023-11-19 07:54:46,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 300 transitions, 3246 flow, removed 37 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:46,729 INFO L231 Difference]: Finished difference. Result has 99 places, 109 transitions, 1210 flow [2023-11-19 07:54:46,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1210, PETRI_PLACES=99, PETRI_TRANSITIONS=109} [2023-11-19 07:54:46,730 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2023-11-19 07:54:46,731 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 109 transitions, 1210 flow [2023-11-19 07:54:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states 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 07:54:46,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:46,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:46,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:54:46,732 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:54:46,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1816626685, now seen corresponding path program 1 times [2023-11-19 07:54:46,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:46,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28577697] [2023-11-19 07:54:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:46,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:46,958 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 07:54:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28577697] [2023-11-19 07:54:46,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28577697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:46,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:46,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960251645] [2023-11-19 07:54:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:46,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:46,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 296 [2023-11-19 07:54:46,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 109 transitions, 1210 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 07:54:46,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:46,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 296 [2023-11-19 07:54:46,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand