./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix004.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_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/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_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix004.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/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_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/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 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:22,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:22,776 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 08:05:22,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:22,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:22,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:22,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:22,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:22,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:22,841 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:22,843 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:22,844 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:22,844 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:22,846 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:22,846 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:22,847 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:22,847 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:22,848 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:22,848 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 08:05:22,849 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 08:05:22,849 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 08:05:22,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:22,850 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 08:05:22,852 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:05:22,852 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:22,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:22,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:22,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:22,855 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:22,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:22,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:22,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:22,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:22,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:22,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:22,858 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:22,858 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:22,859 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:22,859 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_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81dfcecae183e47a2274a923e55daf761c46d6146ab2c58970ae115599afe231 [2023-11-19 08:05:23,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:23,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:23,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:23,260 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:23,261 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:23,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2023-11-19 08:05:26,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:26,686 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:26,687 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/sv-benchmarks/c/pthread-wmm/mix004.oepc.i [2023-11-19 08:05:26,709 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/data/b52624939/d563fdd2686c4f10bde632e261be27ae/FLAG0aafda5e4 [2023-11-19 08:05:26,725 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/data/b52624939/d563fdd2686c4f10bde632e261be27ae [2023-11-19 08:05:26,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:26,730 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:26,732 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:26,732 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:26,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:26,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:26" (1/1) ... [2023-11-19 08:05:26,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@166733d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:26, skipping insertion in model container [2023-11-19 08:05:26,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:26" (1/1) ... [2023-11-19 08:05:26,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:27,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:27,440 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:27,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:27,560 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:27,561 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 08:05:27,569 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:27,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27 WrapperNode [2023-11-19 08:05:27,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:27,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:27,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:27,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:27,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,676 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 152 [2023-11-19 08:05:27,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:27,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:27,680 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:27,681 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:27,691 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,716 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,728 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:27,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:27,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:27,743 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:27,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (1/1) ... [2023-11-19 08:05:27,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:27,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:27,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b02a38e6-adb0-4560-a5d2-cc7a24bbdcd5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:27,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:05:27,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 08:05:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 08:05:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 08:05:27,844 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 08:05:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 08:05:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 08:05:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 08:05:27,845 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 08:05:27,845 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 08:05:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 08:05:27,846 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 08:05:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:27,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 08:05:27,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:27,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:27,850 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 08:05:28,093 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:28,095 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:28,506 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:28,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:28,735 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:05:28,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:28 BoogieIcfgContainer [2023-11-19 08:05:28,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:28,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:28,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:28,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:28,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:26" (1/3) ... [2023-11-19 08:05:28,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f5b91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:28, skipping insertion in model container [2023-11-19 08:05:28,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:27" (2/3) ... [2023-11-19 08:05:28,749 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f5b91b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:28, skipping insertion in model container [2023-11-19 08:05:28,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:28" (3/3) ... [2023-11-19 08:05:28,755 INFO L112 eAbstractionObserver]: Analyzing ICFG mix004.oepc.i [2023-11-19 08:05:28,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:28,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 08:05:28,778 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 08:05:28,873 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 08:05:28,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 155 transitions, 326 flow [2023-11-19 08:05:28,998 INFO L124 PetriNetUnfolderBase]: 4/151 cut-off events. [2023-11-19 08:05:28,998 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:29,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 4/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 08:05:29,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 155 transitions, 326 flow [2023-11-19 08:05:29,015 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 151 transitions, 314 flow [2023-11-19 08:05:29,019 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 08:05:29,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 151 transitions, 314 flow [2023-11-19 08:05:29,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 151 transitions, 314 flow [2023-11-19 08:05:29,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 151 transitions, 314 flow [2023-11-19 08:05:29,153 INFO L124 PetriNetUnfolderBase]: 4/151 cut-off events. [2023-11-19 08:05:29,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:29,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 151 events. 4/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 128 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 08:05:29,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 4400 [2023-11-19 08:05:35,180 INFO L134 LiptonReduction]: Checked pairs total: 12777 [2023-11-19 08:05:35,181 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-11-19 08:05:35,206 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:35,213 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;@26efc714, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:35,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 08:05:35,224 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 08:05:35,225 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 08:05:35,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:35,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:35,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 08:05:35,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:35,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 669, now seen corresponding path program 1 times [2023-11-19 08:05:35,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347645417] [2023-11-19 08:05:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:35,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:35,363 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 08:05:35,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:35,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347645417] [2023-11-19 08:05:35,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347645417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:35,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 08:05:35,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910359890] [2023-11-19 08:05:35,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:35,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:35,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:35,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 308 [2023-11-19 08:05:35,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 08:05:35,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:35,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 308 [2023-11-19 08:05:35,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:37,648 INFO L124 PetriNetUnfolderBase]: 8719/11919 cut-off events. [2023-11-19 08:05:37,649 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-19 08:05:37,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23867 conditions, 11919 events. 8719/11919 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 64348 event pairs, 8719 based on Foata normal form. 0/10390 useless extension candidates. Maximal degree in co-relation 23855. Up to 11731 conditions per place. [2023-11-19 08:05:37,767 INFO L140 encePairwiseOnDemand]: 299/308 looper letters, 28 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-11-19 08:05:37,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 134 flow [2023-11-19 08:05:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 08:05:37,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 313 transitions. [2023-11-19 08:05:37,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081168831168831 [2023-11-19 08:05:37,785 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 313 transitions. [2023-11-19 08:05:37,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 313 transitions. [2023-11-19 08:05:37,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:37,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 313 transitions. [2023-11-19 08:05:37,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 156.5) internal successors, (313), 2 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 08:05:37,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 08:05:37,805 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 308.0) internal successors, (924), 3 states have internal predecessors, (924), 0 states have call successors, (0), 0 states 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 08:05:37,807 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 2 states and 313 transitions. [2023-11-19 08:05:37,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 134 flow [2023-11-19 08:05:37,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 08:05:37,818 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 74 flow [2023-11-19 08:05:37,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-19 08:05:37,824 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2023-11-19 08:05:37,824 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 74 flow [2023-11-19 08:05:37,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 138.5) internal successors, (277), 2 states have internal predecessors, (277), 0 states have call successors, (0), 0 states 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 08:05:37,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:37,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 08:05:37,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:37,826 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:37,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:37,827 INFO L85 PathProgramCache]: Analyzing trace with hash 659392, now seen corresponding path program 1 times [2023-11-19 08:05:37,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:37,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160354446] [2023-11-19 08:05:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,258 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 08:05:38,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:38,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160354446] [2023-11-19 08:05:38,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160354446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:38,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:38,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 08:05:38,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797571481] [2023-11-19 08:05:38,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:38,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:05:38,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:38,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:05:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:05:38,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 308 [2023-11-19 08:05:38,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 08:05:38,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:38,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 308 [2023-11-19 08:05:38,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:40,000 INFO L124 PetriNetUnfolderBase]: 6855/9372 cut-off events. [2023-11-19 08:05:40,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 08:05:40,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18809 conditions, 9372 events. 6855/9372 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 48455 event pairs, 3527 based on Foata normal form. 0/8705 useless extension candidates. Maximal degree in co-relation 18806. Up to 7399 conditions per place. [2023-11-19 08:05:40,083 INFO L140 encePairwiseOnDemand]: 305/308 looper letters, 45 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-19 08:05:40,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 220 flow [2023-11-19 08:05:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:05:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 08:05:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-11-19 08:05:40,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4989177489177489 [2023-11-19 08:05:40,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-11-19 08:05:40,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-11-19 08:05:40,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:40,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-11-19 08:05:40,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 08:05:40,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 08:05:40,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 308.0) internal successors, (1232), 4 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states 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 08:05:40,099 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 74 flow. Second operand 3 states and 461 transitions. [2023-11-19 08:05:40,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 220 flow [2023-11-19 08:05:40,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 08:05:40,101 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 74 flow [2023-11-19 08:05:40,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-19 08:05:40,102 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2023-11-19 08:05:40,103 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 74 flow [2023-11-19 08:05:40,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 08:05:40,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:40,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:40,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:40,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:40,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1121874807, now seen corresponding path program 1 times [2023-11-19 08:05:40,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:40,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953043269] [2023-11-19 08:05:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:40,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:41,124 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 08:05:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953043269] [2023-11-19 08:05:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953043269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388555494] [2023-11-19 08:05:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:41,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:41,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 308 [2023-11-19 08:05:41,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 states 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 08:05:41,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:41,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 308 [2023-11-19 08:05:41,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:44,192 INFO L124 PetriNetUnfolderBase]: 10359/14644 cut-off events. [2023-11-19 08:05:44,192 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2023-11-19 08:05:44,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29917 conditions, 14644 events. 10359/14644 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 87052 event pairs, 2472 based on Foata normal form. 0/14372 useless extension candidates. Maximal degree in co-relation 29913. Up to 5793 conditions per place. [2023-11-19 08:05:44,475 INFO L140 encePairwiseOnDemand]: 302/308 looper letters, 71 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-19 08:05:44,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 81 transitions, 342 flow [2023-11-19 08:05:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:05:44,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 912 transitions. [2023-11-19 08:05:44,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230055658627087 [2023-11-19 08:05:44,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 912 transitions. [2023-11-19 08:05:44,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 912 transitions. [2023-11-19 08:05:44,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:44,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 912 transitions. [2023-11-19 08:05:44,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.28571428571428) internal successors, (912), 7 states have internal predecessors, (912), 0 states have call successors, (0), 0 states 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 08:05:44,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:05:44,493 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:05:44,494 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 74 flow. Second operand 7 states and 912 transitions. [2023-11-19 08:05:44,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 81 transitions, 342 flow [2023-11-19 08:05:44,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:44,498 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 98 flow [2023-11-19 08:05:44,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2023-11-19 08:05:44,500 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2023-11-19 08:05:44,500 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 98 flow [2023-11-19 08:05:44,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.71428571428571) internal successors, (845), 7 states have internal predecessors, (845), 0 states have call successors, (0), 0 states 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 08:05:44,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:44,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:44,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:44,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:44,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1121874840, now seen corresponding path program 1 times [2023-11-19 08:05:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:44,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402287638] [2023-11-19 08:05:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:44,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:44,759 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 08:05:44,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:44,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402287638] [2023-11-19 08:05:44,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402287638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685845912] [2023-11-19 08:05:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:44,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:44,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 308 [2023-11-19 08:05:44,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:44,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:44,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 308 [2023-11-19 08:05:44,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:49,199 INFO L124 PetriNetUnfolderBase]: 27642/37071 cut-off events. [2023-11-19 08:05:49,200 INFO L125 PetriNetUnfolderBase]: For 3832/3832 co-relation queries the response was YES. [2023-11-19 08:05:49,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78010 conditions, 37071 events. 27642/37071 cut-off events. For 3832/3832 co-relation queries the response was YES. Maximal size of possible extension queue 1080. Compared 195199 event pairs, 17582 based on Foata normal form. 900/37971 useless extension candidates. Maximal degree in co-relation 78003. Up to 33924 conditions per place. [2023-11-19 08:05:49,448 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 44 selfloop transitions, 6 changer transitions 27/77 dead transitions. [2023-11-19 08:05:49,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 370 flow [2023-11-19 08:05:49,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:49,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 701 transitions. [2023-11-19 08:05:49,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551948051948052 [2023-11-19 08:05:49,453 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 701 transitions. [2023-11-19 08:05:49,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 701 transitions. [2023-11-19 08:05:49,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:49,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 701 transitions. [2023-11-19 08:05:49,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states 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 08:05:49,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:05:49,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:05:49,462 INFO L175 Difference]: Start difference. First operand has 50 places, 33 transitions, 98 flow. Second operand 5 states and 701 transitions. [2023-11-19 08:05:49,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 370 flow [2023-11-19 08:05:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 360 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:49,484 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 150 flow [2023-11-19 08:05:49,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-11-19 08:05:49,486 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2023-11-19 08:05:49,486 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 150 flow [2023-11-19 08:05:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:49,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:49,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:49,488 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:49,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:49,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1572205736, now seen corresponding path program 1 times [2023-11-19 08:05:49,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:49,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543055135] [2023-11-19 08:05:49,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:49,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:49,716 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 08:05:49,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:49,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543055135] [2023-11-19 08:05:49,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543055135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:49,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:05:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811833560] [2023-11-19 08:05:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:49,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:49,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 308 [2023-11-19 08:05:49,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 08:05:49,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:49,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 308 [2023-11-19 08:05:49,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:54,107 INFO L124 PetriNetUnfolderBase]: 26412/35425 cut-off events. [2023-11-19 08:05:54,107 INFO L125 PetriNetUnfolderBase]: For 23431/23431 co-relation queries the response was YES. [2023-11-19 08:05:54,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89722 conditions, 35425 events. 26412/35425 cut-off events. For 23431/23431 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 184905 event pairs, 6444 based on Foata normal form. 1452/36877 useless extension candidates. Maximal degree in co-relation 89712. Up to 22641 conditions per place. [2023-11-19 08:05:54,388 INFO L140 encePairwiseOnDemand]: 303/308 looper letters, 76 selfloop transitions, 7 changer transitions 4/87 dead transitions. [2023-11-19 08:05:54,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 87 transitions, 484 flow [2023-11-19 08:05:54,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:05:54,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2023-11-19 08:05:54,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2023-11-19 08:05:54,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2023-11-19 08:05:54,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2023-11-19 08:05:54,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:54,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2023-11-19 08:05:54,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 08:05:54,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:05:54,406 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:05:54,406 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 150 flow. Second operand 5 states and 707 transitions. [2023-11-19 08:05:54,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 87 transitions, 484 flow [2023-11-19 08:05:54,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 87 transitions, 476 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 08:05:54,851 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 196 flow [2023-11-19 08:05:54,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-19 08:05:54,852 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-19 08:05:54,852 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 196 flow [2023-11-19 08:05:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 08:05:54,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:54,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:54,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:54,854 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:54,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1441317094, now seen corresponding path program 1 times [2023-11-19 08:05:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469382326] [2023-11-19 08:05:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:55,531 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 08:05:55,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469382326] [2023-11-19 08:05:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469382326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:55,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055872341] [2023-11-19 08:05:55,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:55,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:55,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:55,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 308 [2023-11-19 08:05:55,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 08:05:55,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:55,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 308 [2023-11-19 08:05:55,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:05:58,675 INFO L124 PetriNetUnfolderBase]: 14042/20098 cut-off events. [2023-11-19 08:05:58,676 INFO L125 PetriNetUnfolderBase]: For 14162/14634 co-relation queries the response was YES. [2023-11-19 08:05:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49197 conditions, 20098 events. 14042/20098 cut-off events. For 14162/14634 co-relation queries the response was YES. Maximal size of possible extension queue 970. Compared 124882 event pairs, 4773 based on Foata normal form. 804/20144 useless extension candidates. Maximal degree in co-relation 49185. Up to 18073 conditions per place. [2023-11-19 08:05:58,850 INFO L140 encePairwiseOnDemand]: 303/308 looper letters, 39 selfloop transitions, 5 changer transitions 2/57 dead transitions. [2023-11-19 08:05:58,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 295 flow [2023-11-19 08:05:58,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 08:05:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2023-11-19 08:05:58,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2023-11-19 08:05:58,855 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2023-11-19 08:05:58,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2023-11-19 08:05:58,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:05:58,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2023-11-19 08:05:58,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states 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 08:05:58,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 08:05:58,865 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 308.0) internal successors, (2156), 7 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states 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 08:05:58,865 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 196 flow. Second operand 6 states and 752 transitions. [2023-11-19 08:05:58,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 295 flow [2023-11-19 08:05:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 287 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 08:05:59,057 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 153 flow [2023-11-19 08:05:59,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2023-11-19 08:05:59,058 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-11-19 08:05:59,058 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 153 flow [2023-11-19 08:05:59,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.16666666666667) internal successors, (721), 6 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 08:05:59,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:05:59,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:59,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:59,059 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:05:59,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -127287115, now seen corresponding path program 1 times [2023-11-19 08:05:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:59,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781185207] [2023-11-19 08:05:59,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:59,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:59,258 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 08:05:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781185207] [2023-11-19 08:05:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781185207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:59,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:59,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254252105] [2023-11-19 08:05:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:59,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:59,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:59,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 308 [2023-11-19 08:05:59,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 153 flow. Second operand has 4 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 08:05:59,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:05:59,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 308 [2023-11-19 08:05:59,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:01,654 INFO L124 PetriNetUnfolderBase]: 12615/18146 cut-off events. [2023-11-19 08:06:01,654 INFO L125 PetriNetUnfolderBase]: For 10851/11190 co-relation queries the response was YES. [2023-11-19 08:06:01,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43099 conditions, 18146 events. 12615/18146 cut-off events. For 10851/11190 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 109964 event pairs, 4673 based on Foata normal form. 500/18366 useless extension candidates. Maximal degree in co-relation 43089. Up to 12608 conditions per place. [2023-11-19 08:06:01,757 INFO L140 encePairwiseOnDemand]: 304/308 looper letters, 38 selfloop transitions, 5 changer transitions 23/73 dead transitions. [2023-11-19 08:06:01,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 73 transitions, 369 flow [2023-11-19 08:06:01,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:01,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:01,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 735 transitions. [2023-11-19 08:06:01,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2023-11-19 08:06:01,761 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 735 transitions. [2023-11-19 08:06:01,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 735 transitions. [2023-11-19 08:06:01,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:01,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 735 transitions. [2023-11-19 08:06:01,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 0 states have call successors, (0), 0 states 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 08:06:01,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:01,769 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:01,769 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 153 flow. Second operand 5 states and 735 transitions. [2023-11-19 08:06:01,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 73 transitions, 369 flow [2023-11-19 08:06:01,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 73 transitions, 354 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-19 08:06:01,963 INFO L231 Difference]: Finished difference. Result has 56 places, 37 transitions, 159 flow [2023-11-19 08:06:01,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=5, PETRI_FLOW=159, PETRI_PLACES=56, PETRI_TRANSITIONS=37} [2023-11-19 08:06:01,964 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-11-19 08:06:01,965 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 37 transitions, 159 flow [2023-11-19 08:06:01,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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 08:06:01,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:01,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:01,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:06:01,966 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:06:01,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:01,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1168846012, now seen corresponding path program 1 times [2023-11-19 08:06:01,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:01,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656155663] [2023-11-19 08:06:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:01,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:02,120 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 08:06:02,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656155663] [2023-11-19 08:06:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656155663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 08:06:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830427889] [2023-11-19 08:06:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:02,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:02,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:02,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:02,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 308 [2023-11-19 08:06:02,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 37 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 08:06:02,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:02,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 308 [2023-11-19 08:06:02,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:03,939 INFO L124 PetriNetUnfolderBase]: 8860/13036 cut-off events. [2023-11-19 08:06:03,939 INFO L125 PetriNetUnfolderBase]: For 4041/4256 co-relation queries the response was YES. [2023-11-19 08:06:03,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29908 conditions, 13036 events. 8860/13036 cut-off events. For 4041/4256 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 81559 event pairs, 1784 based on Foata normal form. 889/13707 useless extension candidates. Maximal degree in co-relation 29897. Up to 8674 conditions per place. [2023-11-19 08:06:04,027 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 63 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2023-11-19 08:06:04,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 414 flow [2023-11-19 08:06:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:04,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:04,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 728 transitions. [2023-11-19 08:06:04,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2023-11-19 08:06:04,031 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 728 transitions. [2023-11-19 08:06:04,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 728 transitions. [2023-11-19 08:06:04,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:04,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 728 transitions. [2023-11-19 08:06:04,036 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 08:06:04,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:04,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:04,040 INFO L175 Difference]: Start difference. First operand has 56 places, 37 transitions, 159 flow. Second operand 5 states and 728 transitions. [2023-11-19 08:06:04,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 414 flow [2023-11-19 08:06:04,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 400 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-19 08:06:04,080 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 220 flow [2023-11-19 08:06:04,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-11-19 08:06:04,084 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-11-19 08:06:04,084 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 220 flow [2023-11-19 08:06:04,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states 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 08:06:04,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:04,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:06:04,085 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:06:04,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1328852173, now seen corresponding path program 1 times [2023-11-19 08:06:04,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899898926] [2023-11-19 08:06:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:04,371 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 08:06:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899898926] [2023-11-19 08:06:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899898926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:04,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:04,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554026523] [2023-11-19 08:06:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:04,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:04,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 308 [2023-11-19 08:06:04,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 08:06:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:04,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 308 [2023-11-19 08:06:04,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:05,850 INFO L124 PetriNetUnfolderBase]: 6459/9943 cut-off events. [2023-11-19 08:06:05,850 INFO L125 PetriNetUnfolderBase]: For 5058/5155 co-relation queries the response was YES. [2023-11-19 08:06:05,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28420 conditions, 9943 events. 6459/9943 cut-off events. For 5058/5155 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 64653 event pairs, 938 based on Foata normal form. 580/10350 useless extension candidates. Maximal degree in co-relation 28408. Up to 3131 conditions per place. [2023-11-19 08:06:05,908 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 86 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-11-19 08:06:05,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 116 transitions, 648 flow [2023-11-19 08:06:05,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:06:05,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 08:06:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1021 transitions. [2023-11-19 08:06:05,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735621521335807 [2023-11-19 08:06:05,912 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1021 transitions. [2023-11-19 08:06:05,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1021 transitions. [2023-11-19 08:06:05,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:05,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1021 transitions. [2023-11-19 08:06:05,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.85714285714286) internal successors, (1021), 7 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states 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 08:06:05,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:06:05,922 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 308.0) internal successors, (2464), 8 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states 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 08:06:05,922 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 220 flow. Second operand 7 states and 1021 transitions. [2023-11-19 08:06:05,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 116 transitions, 648 flow [2023-11-19 08:06:05,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 643 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 08:06:05,965 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 349 flow [2023-11-19 08:06:05,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2023-11-19 08:06:05,967 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-11-19 08:06:05,967 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 349 flow [2023-11-19 08:06:05,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 0 states 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 08:06:05,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:05,968 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] [2023-11-19 08:06:05,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:06:05,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:06:05,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 296631532, now seen corresponding path program 1 times [2023-11-19 08:06:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:05,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410270431] [2023-11-19 08:06:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:06,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:06,231 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 08:06:06,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:06,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410270431] [2023-11-19 08:06:06,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410270431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:06,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:06,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893078627] [2023-11-19 08:06:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:06,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:06,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:06:06,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 308 [2023-11-19 08:06:06,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 349 flow. Second operand has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 08:06:06,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:06,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 308 [2023-11-19 08:06:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:07,617 INFO L124 PetriNetUnfolderBase]: 5654/8756 cut-off events. [2023-11-19 08:06:07,617 INFO L125 PetriNetUnfolderBase]: For 11808/11875 co-relation queries the response was YES. [2023-11-19 08:06:07,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29359 conditions, 8756 events. 5654/8756 cut-off events. For 11808/11875 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 56716 event pairs, 766 based on Foata normal form. 200/8793 useless extension candidates. Maximal degree in co-relation 29344. Up to 2893 conditions per place. [2023-11-19 08:06:07,673 INFO L140 encePairwiseOnDemand]: 301/308 looper letters, 95 selfloop transitions, 28 changer transitions 11/145 dead transitions. [2023-11-19 08:06:07,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 145 transitions, 930 flow [2023-11-19 08:06:07,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:07,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-19 08:06:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1312 transitions. [2023-11-19 08:06:07,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4733044733044733 [2023-11-19 08:06:07,679 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1312 transitions. [2023-11-19 08:06:07,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1312 transitions. [2023-11-19 08:06:07,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:07,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1312 transitions. [2023-11-19 08:06:07,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.77777777777777) internal successors, (1312), 9 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states 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 08:06:07,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 08:06:07,690 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 308.0) internal successors, (3080), 10 states have internal predecessors, (3080), 0 states have call successors, (0), 0 states 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 08:06:07,690 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 349 flow. Second operand 9 states and 1312 transitions. [2023-11-19 08:06:07,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 145 transitions, 930 flow [2023-11-19 08:06:08,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 145 transitions, 880 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-19 08:06:08,161 INFO L231 Difference]: Finished difference. Result has 73 places, 64 transitions, 477 flow [2023-11-19 08:06:08,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=477, PETRI_PLACES=73, PETRI_TRANSITIONS=64} [2023-11-19 08:06:08,162 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-11-19 08:06:08,162 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 64 transitions, 477 flow [2023-11-19 08:06:08,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 08:06:08,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:08,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:08,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:06:08,164 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:06:08,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:08,164 INFO L85 PathProgramCache]: Analyzing trace with hash -791417045, now seen corresponding path program 1 times [2023-11-19 08:06:08,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623443009] [2023-11-19 08:06:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:08,415 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 08:06:08,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:08,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623443009] [2023-11-19 08:06:08,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623443009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:08,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:08,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:08,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527536768] [2023-11-19 08:06:08,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:08,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:08,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:08,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:08,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:08,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 308 [2023-11-19 08:06:08,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 64 transitions, 477 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 08:06:08,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:08,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 308 [2023-11-19 08:06:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 08:06:10,736 INFO L124 PetriNetUnfolderBase]: 10336/16310 cut-off events. [2023-11-19 08:06:10,736 INFO L125 PetriNetUnfolderBase]: For 38499/38782 co-relation queries the response was YES. [2023-11-19 08:06:10,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55819 conditions, 16310 events. 10336/16310 cut-off events. For 38499/38782 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 116623 event pairs, 1468 based on Foata normal form. 28/16110 useless extension candidates. Maximal degree in co-relation 55801. Up to 7156 conditions per place. [2023-11-19 08:06:10,859 INFO L140 encePairwiseOnDemand]: 304/308 looper letters, 116 selfloop transitions, 2 changer transitions 19/147 dead transitions. [2023-11-19 08:06:10,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 147 transitions, 1424 flow [2023-11-19 08:06:10,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 08:06:10,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 725 transitions. [2023-11-19 08:06:10,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4707792207792208 [2023-11-19 08:06:10,862 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 725 transitions. [2023-11-19 08:06:10,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 725 transitions. [2023-11-19 08:06:10,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 08:06:10,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 725 transitions. [2023-11-19 08:06:10,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states 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 08:06:10,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:10,868 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 308.0) internal successors, (1848), 6 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states 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 08:06:10,868 INFO L175 Difference]: Start difference. First operand has 73 places, 64 transitions, 477 flow. Second operand 5 states and 725 transitions. [2023-11-19 08:06:10,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 147 transitions, 1424 flow [2023-11-19 08:06:12,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 147 transitions, 1157 flow, removed 94 selfloop flow, removed 4 redundant places. [2023-11-19 08:06:12,287 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 395 flow [2023-11-19 08:06:12,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=308, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=395, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2023-11-19 08:06:12,288 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2023-11-19 08:06:12,289 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 395 flow [2023-11-19 08:06:12,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states 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 08:06:12,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 08:06:12,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:06:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:06:12,290 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 08:06:12,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash -876743015, now seen corresponding path program 2 times [2023-11-19 08:06:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992489035] [2023-11-19 08:06:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:13,913 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 08:06:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:13,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992489035] [2023-11-19 08:06:13,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992489035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:13,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:13,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:06:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112005072] [2023-11-19 08:06:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 08:06:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:13,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 08:06:13,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:06:13,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 308 [2023-11-19 08:06:14,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 395 flow. Second operand has 8 states, 8 states have (on average 132.75) internal successors, (1062), 8 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 08:06:14,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 08:06:14,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 308 [2023-11-19 08:06:14,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand