./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI --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 a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:40:50,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:40:50,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:40:50,668 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:40:50,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:40:50,709 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:40:50,711 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:40:50,711 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:40:50,713 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:40:50,718 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:40:50,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:40:50,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:40:50,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:40:50,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:40:50,722 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:40:50,723 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:40:50,723 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:40:50,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:40:50,724 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:40:50,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:40:50,725 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:40:50,726 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:40:50,727 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:40:50,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:40:50,728 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:40:50,728 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:40:50,729 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:40:50,729 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:40:50,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:40:50,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:40:50,732 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:40:50,732 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:40:50,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:50,733 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:40:50,734 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:40:50,734 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:40:50,734 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:40:50,735 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:40:50,735 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:40:50,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:40:50,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:40:50,736 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_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a97b4f259d777d70ea3df756a2f94b2605f52fea9df0872361c6911477a44448 [2023-11-24 21:40:51,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:40:51,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:40:51,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:40:51,094 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:40:51,095 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:40:51,096 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2023-11-24 21:40:54,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:40:54,512 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:40:54,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/sv-benchmarks/c/pthread-wmm/mix017.oepc.i [2023-11-24 21:40:54,539 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/data/c9f19638b/a99dc51be6a44cd2b480281acaab0c4a/FLAG1f0784abf [2023-11-24 21:40:54,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/data/c9f19638b/a99dc51be6a44cd2b480281acaab0c4a [2023-11-24 21:40:54,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:40:54,571 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:40:54,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:54,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:40:54,581 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:40:54,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:54" (1/1) ... [2023-11-24 21:40:54,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9a427b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:54, skipping insertion in model container [2023-11-24 21:40:54,584 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:40:54" (1/1) ... [2023-11-24 21:40:54,668 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:40:55,116 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:55,131 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:40:55,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:40:55,258 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:40:55,259 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:40:55,267 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:40:55,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55 WrapperNode [2023-11-24 21:40:55,269 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:40:55,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:55,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:40:55,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:40:55,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,439 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2023-11-24 21:40:55,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:40:55,441 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:40:55,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:40:55,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:40:55,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,509 INFO L175 MemorySlicer]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:40:55,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,533 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,551 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:40:55,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:40:55,572 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:40:55,573 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:40:55,573 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (1/1) ... [2023-11-24 21:40:55,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:40:55,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:40:55,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:40:55,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4138a9d-b169-4daa-a3cf-196343575a66/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:40:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:40:55,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:40:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:40:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:40:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:40:55,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:40:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:40:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:40:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:40:55,679 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:40:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:40:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:40:55,680 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:40:55,680 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:40:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:40:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-24 21:40:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-24 21:40:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:40:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:40:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:40:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:40:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:40:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:40:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:40:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:40:55,685 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:40:55,900 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:40:55,913 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:40:56,472 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:40:56,829 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:40:56,829 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:40:56,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:40:56 BoogieIcfgContainer [2023-11-24 21:40:56,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:40:56,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:40:56,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:40:56,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:40:56,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:40:54" (1/3) ... [2023-11-24 21:40:56,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc3924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:40:56, skipping insertion in model container [2023-11-24 21:40:56,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:40:55" (2/3) ... [2023-11-24 21:40:56,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dfc3924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:40:56, skipping insertion in model container [2023-11-24 21:40:56,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:40:56" (3/3) ... [2023-11-24 21:40:56,840 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017.oepc.i [2023-11-24 21:40:56,863 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:40:56,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-24 21:40:56,863 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:40:56,946 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:40:56,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 66 transitions, 148 flow [2023-11-24 21:40:57,091 INFO L124 PetriNetUnfolderBase]: 2/62 cut-off events. [2023-11-24 21:40:57,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:40:57,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 62 events. 2/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-11-24 21:40:57,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 66 transitions, 148 flow [2023-11-24 21:40:57,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 62 transitions, 136 flow [2023-11-24 21:40:57,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:40:57,155 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;@7c6df42a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:40:57,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-24 21:40:57,158 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:40:57,158 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:40:57,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:40:57,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:40:57,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:40:57,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:40:57,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 14199, now seen corresponding path program 1 times [2023-11-24 21:40:57,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:40:57,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705913356] [2023-11-24 21:40:57,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:57,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:40:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:40:57,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705913356] [2023-11-24 21:40:57,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705913356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:57,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:57,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:40:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923873678] [2023-11-24 21:40:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:40:57,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:57,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:57,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:40:57,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:57,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:40:57,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:40:57,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:40:59,225 INFO L124 PetriNetUnfolderBase]: 4217/7238 cut-off events. [2023-11-24 21:40:59,226 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-24 21:40:59,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13165 conditions, 7238 events. 4217/7238 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 53794 event pairs, 3179 based on Foata normal form. 360/6977 useless extension candidates. Maximal degree in co-relation 13150. Up to 4391 conditions per place. [2023-11-24 21:40:59,311 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 36 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-24 21:40:59,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 226 flow [2023-11-24 21:40:59,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:40:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:40:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 21:40:59,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-24 21:40:59,326 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 21:40:59,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 21:40:59,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:40:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 21:40:59,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:59,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:59,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:59,345 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 136 flow. Second operand 3 states and 146 transitions. [2023-11-24 21:40:59,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 226 flow [2023-11-24 21:40:59,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 222 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:40:59,360 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-24 21:40:59,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-24 21:40:59,367 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-24 21:40:59,367 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-24 21:40:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:59,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:40:59,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:40:59,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:40:59,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:40:59,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:40:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash 14200, now seen corresponding path program 1 times [2023-11-24 21:40:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:40:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336653767] [2023-11-24 21:40:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:40:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:40:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:40:59,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:40:59,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:40:59,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336653767] [2023-11-24 21:40:59,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336653767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:40:59,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:40:59,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:40:59,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434486252] [2023-11-24 21:40:59,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:40:59,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:40:59,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:40:59,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:40:59,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:40:59,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:40:59,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:40:59,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:40:59,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:40:59,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:01,038 INFO L124 PetriNetUnfolderBase]: 4217/7237 cut-off events. [2023-11-24 21:41:01,038 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-11-24 21:41:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13341 conditions, 7237 events. 4217/7237 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 53789 event pairs, 3179 based on Foata normal form. 1/6617 useless extension candidates. Maximal degree in co-relation 13330. Up to 4390 conditions per place. [2023-11-24 21:41:01,113 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 35 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-24 21:41:01,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 222 flow [2023-11-24 21:41:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:01,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:01,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-24 21:41:01,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7373737373737373 [2023-11-24 21:41:01,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-24 21:41:01,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-24 21:41:01,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:01,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-24 21:41:01,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,120 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 146 transitions. [2023-11-24 21:41:01,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 222 flow [2023-11-24 21:41:01,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:01,134 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-24 21:41:01,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-24 21:41:01,135 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -5 predicate places. [2023-11-24 21:41:01,136 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-24 21:41:01,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:01,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:01,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:41:01,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:01,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:01,138 INFO L85 PathProgramCache]: Analyzing trace with hash 423440451, now seen corresponding path program 1 times [2023-11-24 21:41:01,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:01,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414203081] [2023-11-24 21:41:01,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:01,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:01,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:01,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:01,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414203081] [2023-11-24 21:41:01,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414203081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:01,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:01,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:41:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284737591] [2023-11-24 21:41:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:01,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 66 [2023-11-24 21:41:01,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:01,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:01,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 66 [2023-11-24 21:41:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:02,489 INFO L124 PetriNetUnfolderBase]: 3311/5478 cut-off events. [2023-11-24 21:41:02,490 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-24 21:41:02,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10300 conditions, 5478 events. 3311/5478 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 38921 event pairs, 593 based on Foata normal form. 0/5404 useless extension candidates. Maximal degree in co-relation 10289. Up to 3661 conditions per place. [2023-11-24 21:41:02,552 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 41 selfloop transitions, 2 changer transitions 2/76 dead transitions. [2023-11-24 21:41:02,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 262 flow [2023-11-24 21:41:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:02,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 157 transitions. [2023-11-24 21:41:02,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7929292929292929 [2023-11-24 21:41:02,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 157 transitions. [2023-11-24 21:41:02,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 157 transitions. [2023-11-24 21:41:02,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:02,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 157 transitions. [2023-11-24 21:41:02,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,565 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 157 transitions. [2023-11-24 21:41:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 262 flow [2023-11-24 21:41:02,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 76 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:02,572 INFO L231 Difference]: Finished difference. Result has 67 places, 55 transitions, 122 flow [2023-11-24 21:41:02,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=55} [2023-11-24 21:41:02,574 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -6 predicate places. [2023-11-24 21:41:02,574 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 55 transitions, 122 flow [2023-11-24 21:41:02,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:02,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:02,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:41:02,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:02,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash 423439959, now seen corresponding path program 1 times [2023-11-24 21:41:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772783192] [2023-11-24 21:41:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:02,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:02,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772783192] [2023-11-24 21:41:02,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772783192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:02,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736097312] [2023-11-24 21:41:02,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:02,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:02,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:02,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:02,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:02,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:02,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:02,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:02,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:02,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:03,625 INFO L124 PetriNetUnfolderBase]: 2906/5175 cut-off events. [2023-11-24 21:41:03,625 INFO L125 PetriNetUnfolderBase]: For 279/279 co-relation queries the response was YES. [2023-11-24 21:41:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 5175 events. 2906/5175 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37899 event pairs, 1880 based on Foata normal form. 0/4939 useless extension candidates. Maximal degree in co-relation 9576. Up to 3466 conditions per place. [2023-11-24 21:41:03,675 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-24 21:41:03,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 212 flow [2023-11-24 21:41:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:03,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-24 21:41:03,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-24 21:41:03,677 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-24 21:41:03,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-24 21:41:03,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:03,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-24 21:41:03,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,680 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,681 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 141 transitions. [2023-11-24 21:41:03,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 212 flow [2023-11-24 21:41:03,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:03,683 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-24 21:41:03,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-24 21:41:03,685 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -8 predicate places. [2023-11-24 21:41:03,685 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-24 21:41:03,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:03,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:41:03,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:41:03,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:03,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:03,687 INFO L85 PathProgramCache]: Analyzing trace with hash 423439960, now seen corresponding path program 1 times [2023-11-24 21:41:03,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:03,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541266026] [2023-11-24 21:41:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:03,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:03,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541266026] [2023-11-24 21:41:03,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541266026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:03,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835607989] [2023-11-24 21:41:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:03,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:03,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:03,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:03,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:41:03,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:03,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:03,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:41:03,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:04,612 INFO L124 PetriNetUnfolderBase]: 2903/5168 cut-off events. [2023-11-24 21:41:04,613 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-24 21:41:04,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9441 conditions, 5168 events. 2903/5168 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 37817 event pairs, 1880 based on Foata normal form. 4/4936 useless extension candidates. Maximal degree in co-relation 9431. Up to 3459 conditions per place. [2023-11-24 21:41:04,662 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-24 21:41:04,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 206 flow [2023-11-24 21:41:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:04,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:04,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 21:41:04,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:41:04,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 21:41:04,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 21:41:04,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:04,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 21:41:04,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,667 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 143 transitions. [2023-11-24 21:41:04,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 206 flow [2023-11-24 21:41:04,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:04,672 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-24 21:41:04,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2023-11-24 21:41:04,673 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-24 21:41:04,673 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-24 21:41:04,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:04,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:04,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:41:04,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:04,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash 381310430, now seen corresponding path program 1 times [2023-11-24 21:41:04,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:04,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744597777] [2023-11-24 21:41:04,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:04,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:04,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:04,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:04,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744597777] [2023-11-24 21:41:04,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744597777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:04,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:04,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585822472] [2023-11-24 21:41:04,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:04,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:04,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:04,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:04,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:04,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:04,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:04,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:04,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:05,470 INFO L124 PetriNetUnfolderBase]: 2920/5121 cut-off events. [2023-11-24 21:41:05,470 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-11-24 21:41:05,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9423 conditions, 5121 events. 2920/5121 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 36993 event pairs, 1892 based on Foata normal form. 0/4906 useless extension candidates. Maximal degree in co-relation 9413. Up to 3460 conditions per place. [2023-11-24 21:41:05,511 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-24 21:41:05,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 206 flow [2023-11-24 21:41:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:05,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-24 21:41:05,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-24 21:41:05,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-24 21:41:05,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-24 21:41:05,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:05,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-24 21:41:05,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,515 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 141 transitions. [2023-11-24 21:41:05,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 206 flow [2023-11-24 21:41:05,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 62 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:05,519 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-24 21:41:05,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-11-24 21:41:05,520 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2023-11-24 21:41:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-24 21:41:05,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:05,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:41:05,521 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:05,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash 381310431, now seen corresponding path program 1 times [2023-11-24 21:41:05,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:05,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377635162] [2023-11-24 21:41:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:05,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:05,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:05,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377635162] [2023-11-24 21:41:05,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377635162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:05,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:05,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:05,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369382081] [2023-11-24 21:41:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:05,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:05,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:05,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:41:05,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:05,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:05,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:41:05,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:06,609 INFO L124 PetriNetUnfolderBase]: 2903/5092 cut-off events. [2023-11-24 21:41:06,610 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 21:41:06,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9373 conditions, 5092 events. 2903/5092 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 36840 event pairs, 1884 based on Foata normal form. 12/4894 useless extension candidates. Maximal degree in co-relation 9363. Up to 3431 conditions per place. [2023-11-24 21:41:06,655 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-24 21:41:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 202 flow [2023-11-24 21:41:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 21:41:06,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:41:06,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 21:41:06,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 21:41:06,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:06,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 21:41:06,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,664 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 143 transitions. [2023-11-24 21:41:06,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 202 flow [2023-11-24 21:41:06,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:06,671 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-24 21:41:06,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-24 21:41:06,672 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-24 21:41:06,672 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-24 21:41:06,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:06,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:41:06,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:06,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash -569038806, now seen corresponding path program 1 times [2023-11-24 21:41:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:06,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070368988] [2023-11-24 21:41:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:06,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:06,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070368988] [2023-11-24 21:41:06,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070368988] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:06,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:06,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515722024] [2023-11-24 21:41:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:06,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:06,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:06,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:06,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:06,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:07,564 INFO L124 PetriNetUnfolderBase]: 2978/5123 cut-off events. [2023-11-24 21:41:07,564 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2023-11-24 21:41:07,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9515 conditions, 5123 events. 2978/5123 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 36540 event pairs, 1424 based on Foata normal form. 0/4977 useless extension candidates. Maximal degree in co-relation 9505. Up to 3426 conditions per place. [2023-11-24 21:41:07,607 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 33 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-24 21:41:07,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 202 flow [2023-11-24 21:41:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2023-11-24 21:41:07,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7121212121212122 [2023-11-24 21:41:07,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 141 transitions. [2023-11-24 21:41:07,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 141 transitions. [2023-11-24 21:41:07,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:07,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 141 transitions. [2023-11-24 21:41:07,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,612 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 141 transitions. [2023-11-24 21:41:07,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 202 flow [2023-11-24 21:41:07,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:07,616 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-24 21:41:07,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-24 21:41:07,617 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -12 predicate places. [2023-11-24 21:41:07,617 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-24 21:41:07,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:07,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:07,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:41:07,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:07,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:07,619 INFO L85 PathProgramCache]: Analyzing trace with hash -569038805, now seen corresponding path program 1 times [2023-11-24 21:41:07,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:07,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032419863] [2023-11-24 21:41:07,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:07,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:07,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:07,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032419863] [2023-11-24 21:41:07,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032419863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:07,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:07,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:41:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178239945] [2023-11-24 21:41:07,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:07,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:41:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:07,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:41:07,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:41:07,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 66 [2023-11-24 21:41:07,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:07,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:07,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 66 [2023-11-24 21:41:07,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:08,407 INFO L124 PetriNetUnfolderBase]: 2903/5072 cut-off events. [2023-11-24 21:41:08,408 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-24 21:41:08,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9377 conditions, 5072 events. 2903/5072 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 36491 event pairs, 920 based on Foata normal form. 36/4990 useless extension candidates. Maximal degree in co-relation 9367. Up to 3315 conditions per place. [2023-11-24 21:41:08,449 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 32 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-11-24 21:41:08,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 198 flow [2023-11-24 21:41:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:41:08,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:41:08,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2023-11-24 21:41:08,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2023-11-24 21:41:08,451 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 143 transitions. [2023-11-24 21:41:08,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 143 transitions. [2023-11-24 21:41:08,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:08,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 143 transitions. [2023-11-24 21:41:08,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 66.0) internal successors, (264), 4 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,453 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 3 states and 143 transitions. [2023-11-24 21:41:08,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 198 flow [2023-11-24 21:41:08,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:08,456 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 110 flow [2023-11-24 21:41:08,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-11-24 21:41:08,457 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -13 predicate places. [2023-11-24 21:41:08,458 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 110 flow [2023-11-24 21:41:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:08,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:08,458 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] [2023-11-24 21:41:08,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:41:08,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash -962540356, now seen corresponding path program 1 times [2023-11-24 21:41:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091770073] [2023-11-24 21:41:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:09,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:09,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:09,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091770073] [2023-11-24 21:41:09,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091770073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:09,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:09,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:41:09,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065532100] [2023-11-24 21:41:09,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:09,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:41:09,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:09,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:41:09,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:41:10,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-24 21:41:10,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 110 flow. Second operand has 10 states, 10 states have (on average 34.7) internal successors, (347), 10 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:10,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:10,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-24 21:41:10,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:11,085 INFO L124 PetriNetUnfolderBase]: 3661/5596 cut-off events. [2023-11-24 21:41:11,086 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-11-24 21:41:11,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10960 conditions, 5596 events. 3661/5596 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 35499 event pairs, 150 based on Foata normal form. 180/5736 useless extension candidates. Maximal degree in co-relation 10949. Up to 3384 conditions per place. [2023-11-24 21:41:11,118 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 48 selfloop transitions, 5 changer transitions 13/87 dead transitions. [2023-11-24 21:41:11,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 87 transitions, 320 flow [2023-11-24 21:41:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:41:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:41:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 331 transitions. [2023-11-24 21:41:11,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6268939393939394 [2023-11-24 21:41:11,121 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 331 transitions. [2023-11-24 21:41:11,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 331 transitions. [2023-11-24 21:41:11,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:11,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 331 transitions. [2023-11-24 21:41:11,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.375) internal successors, (331), 8 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:11,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:11,125 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:11,125 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 110 flow. Second operand 8 states and 331 transitions. [2023-11-24 21:41:11,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 87 transitions, 320 flow [2023-11-24 21:41:11,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 87 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:11,128 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 112 flow [2023-11-24 21:41:11,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=112, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2023-11-24 21:41:11,129 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -9 predicate places. [2023-11-24 21:41:11,129 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 112 flow [2023-11-24 21:41:11,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 34.7) internal successors, (347), 10 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:11,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:11,130 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] [2023-11-24 21:41:11,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:41:11,130 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:11,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:11,131 INFO L85 PathProgramCache]: Analyzing trace with hash -962538920, now seen corresponding path program 1 times [2023-11-24 21:41:11,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:11,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487533342] [2023-11-24 21:41:11,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:11,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:11,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:11,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487533342] [2023-11-24 21:41:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487533342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:11,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:11,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451200573] [2023-11-24 21:41:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:11,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 66 [2023-11-24 21:41:11,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:11,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:11,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 66 [2023-11-24 21:41:11,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:12,513 INFO L124 PetriNetUnfolderBase]: 5132/7841 cut-off events. [2023-11-24 21:41:12,513 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-11-24 21:41:12,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15328 conditions, 7841 events. 5132/7841 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 52366 event pairs, 779 based on Foata normal form. 0/7627 useless extension candidates. Maximal degree in co-relation 15317. Up to 3865 conditions per place. [2023-11-24 21:41:12,547 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 33 selfloop transitions, 2 changer transitions 52/108 dead transitions. [2023-11-24 21:41:12,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 108 transitions, 412 flow [2023-11-24 21:41:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:41:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-24 21:41:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 361 transitions. [2023-11-24 21:41:12,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6837121212121212 [2023-11-24 21:41:12,550 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 361 transitions. [2023-11-24 21:41:12,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 361 transitions. [2023-11-24 21:41:12,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:12,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 361 transitions. [2023-11-24 21:41:12,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,554 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 66.0) internal successors, (594), 9 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,554 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 112 flow. Second operand 8 states and 361 transitions. [2023-11-24 21:41:12,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 108 transitions, 412 flow [2023-11-24 21:41:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 108 transitions, 401 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-24 21:41:12,558 INFO L231 Difference]: Finished difference. Result has 69 places, 46 transitions, 117 flow [2023-11-24 21:41:12,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=117, PETRI_PLACES=69, PETRI_TRANSITIONS=46} [2023-11-24 21:41:12,559 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -4 predicate places. [2023-11-24 21:41:12,559 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 46 transitions, 117 flow [2023-11-24 21:41:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:12,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:41:12,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:12,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1089203173, now seen corresponding path program 1 times [2023-11-24 21:41:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419459493] [2023-11-24 21:41:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:12,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419459493] [2023-11-24 21:41:12,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419459493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:12,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:12,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:41:12,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537464093] [2023-11-24 21:41:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:41:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:41:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:41:12,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:41:12,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 46 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:12,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:12,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:41:12,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:14,358 INFO L124 PetriNetUnfolderBase]: 8875/13285 cut-off events. [2023-11-24 21:41:14,358 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2023-11-24 21:41:14,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27468 conditions, 13285 events. 8875/13285 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 89408 event pairs, 1033 based on Foata normal form. 400/13525 useless extension candidates. Maximal degree in co-relation 27452. Up to 7301 conditions per place. [2023-11-24 21:41:14,446 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 53 selfloop transitions, 6 changer transitions 1/78 dead transitions. [2023-11-24 21:41:14,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 307 flow [2023-11-24 21:41:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:41:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:41:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2023-11-24 21:41:14,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2023-11-24 21:41:14,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 190 transitions. [2023-11-24 21:41:14,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 190 transitions. [2023-11-24 21:41:14,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:14,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 190 transitions. [2023-11-24 21:41:14,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:14,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:14,455 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:14,456 INFO L175 Difference]: Start difference. First operand has 69 places, 46 transitions, 117 flow. Second operand 4 states and 190 transitions. [2023-11-24 21:41:14,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 307 flow [2023-11-24 21:41:14,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 295 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-24 21:41:14,664 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 147 flow [2023-11-24 21:41:14,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-11-24 21:41:14,666 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -11 predicate places. [2023-11-24 21:41:14,667 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 147 flow [2023-11-24 21:41:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:14,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:41:14,669 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:14,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:14,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1470267479, now seen corresponding path program 1 times [2023-11-24 21:41:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:14,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665992226] [2023-11-24 21:41:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:14,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:15,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665992226] [2023-11-24 21:41:15,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665992226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:15,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:15,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:41:15,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025670718] [2023-11-24 21:41:15,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:15,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:41:15,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:15,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:41:15,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:41:15,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:41:15,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:15,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:15,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:41:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:16,424 INFO L124 PetriNetUnfolderBase]: 6751/10165 cut-off events. [2023-11-24 21:41:16,424 INFO L125 PetriNetUnfolderBase]: For 2428/2428 co-relation queries the response was YES. [2023-11-24 21:41:16,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23290 conditions, 10165 events. 6751/10165 cut-off events. For 2428/2428 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 65054 event pairs, 451 based on Foata normal form. 364/10393 useless extension candidates. Maximal degree in co-relation 23276. Up to 4601 conditions per place. [2023-11-24 21:41:16,472 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 68 selfloop transitions, 10 changer transitions 1/97 dead transitions. [2023-11-24 21:41:16,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 428 flow [2023-11-24 21:41:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:41:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:41:16,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 241 transitions. [2023-11-24 21:41:16,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7303030303030303 [2023-11-24 21:41:16,474 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 241 transitions. [2023-11-24 21:41:16,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 241 transitions. [2023-11-24 21:41:16,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:16,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 241 transitions. [2023-11-24 21:41:16,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:16,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:16,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 66.0) internal successors, (396), 6 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:16,478 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 147 flow. Second operand 5 states and 241 transitions. [2023-11-24 21:41:16,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 428 flow [2023-11-24 21:41:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 97 transitions, 417 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:16,483 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 199 flow [2023-11-24 21:41:16,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2023-11-24 21:41:16,484 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, -7 predicate places. [2023-11-24 21:41:16,484 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 199 flow [2023-11-24 21:41:16,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.4) internal successors, (177), 5 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:16,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:16,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:16,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:41:16,485 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:16,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:16,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1836260232, now seen corresponding path program 1 times [2023-11-24 21:41:16,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:16,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157821106] [2023-11-24 21:41:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:16,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157821106] [2023-11-24 21:41:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157821106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:17,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:41:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242991334] [2023-11-24 21:41:17,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:17,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:41:17,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:17,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:41:17,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:41:17,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:17,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:17,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:19,368 INFO L124 PetriNetUnfolderBase]: 8512/13854 cut-off events. [2023-11-24 21:41:19,368 INFO L125 PetriNetUnfolderBase]: For 4822/6045 co-relation queries the response was YES. [2023-11-24 21:41:19,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31384 conditions, 13854 events. 8512/13854 cut-off events. For 4822/6045 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 105913 event pairs, 2902 based on Foata normal form. 165/13272 useless extension candidates. Maximal degree in co-relation 31368. Up to 5914 conditions per place. [2023-11-24 21:41:19,462 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 89 selfloop transitions, 22 changer transitions 2/143 dead transitions. [2023-11-24 21:41:19,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 143 transitions, 647 flow [2023-11-24 21:41:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:41:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:41:19,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 465 transitions. [2023-11-24 21:41:19,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-24 21:41:19,465 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 465 transitions. [2023-11-24 21:41:19,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 465 transitions. [2023-11-24 21:41:19,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:19,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 465 transitions. [2023-11-24 21:41:19,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 46.5) internal successors, (465), 10 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:19,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:19,470 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 66.0) internal successors, (726), 11 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:19,470 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 199 flow. Second operand 10 states and 465 transitions. [2023-11-24 21:41:19,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 143 transitions, 647 flow [2023-11-24 21:41:19,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 143 transitions, 612 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-24 21:41:19,489 INFO L231 Difference]: Finished difference. Result has 79 places, 79 transitions, 344 flow [2023-11-24 21:41:19,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=344, PETRI_PLACES=79, PETRI_TRANSITIONS=79} [2023-11-24 21:41:19,490 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2023-11-24 21:41:19,490 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 79 transitions, 344 flow [2023-11-24 21:41:19,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.57142857142857) internal successors, (263), 7 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:19,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:19,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:19,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:41:19,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:19,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:19,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1732805858, now seen corresponding path program 2 times [2023-11-24 21:41:19,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:19,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273024062] [2023-11-24 21:41:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:19,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:19,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:19,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273024062] [2023-11-24 21:41:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273024062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:19,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:41:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628477275] [2023-11-24 21:41:19,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:19,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:19,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:41:19,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 79 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:19,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:19,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:41:19,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:21,405 INFO L124 PetriNetUnfolderBase]: 9658/14141 cut-off events. [2023-11-24 21:41:21,405 INFO L125 PetriNetUnfolderBase]: For 16995/16995 co-relation queries the response was YES. [2023-11-24 21:41:21,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42499 conditions, 14141 events. 9658/14141 cut-off events. For 16995/16995 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 86512 event pairs, 506 based on Foata normal form. 624/14567 useless extension candidates. Maximal degree in co-relation 42477. Up to 4124 conditions per place. [2023-11-24 21:41:21,485 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 115 selfloop transitions, 14 changer transitions 28/175 dead transitions. [2023-11-24 21:41:21,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 175 transitions, 1091 flow [2023-11-24 21:41:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:41:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:41:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 290 transitions. [2023-11-24 21:41:21,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-24 21:41:21,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 290 transitions. [2023-11-24 21:41:21,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 290 transitions. [2023-11-24 21:41:21,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:21,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 290 transitions. [2023-11-24 21:41:21,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:21,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:21,498 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 66.0) internal successors, (462), 7 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:21,498 INFO L175 Difference]: Start difference. First operand has 79 places, 79 transitions, 344 flow. Second operand 6 states and 290 transitions. [2023-11-24 21:41:21,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 175 transitions, 1091 flow [2023-11-24 21:41:21,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 175 transitions, 1085 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:21,538 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 331 flow [2023-11-24 21:41:21,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=331, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2023-11-24 21:41:21,539 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-11-24 21:41:21,539 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 331 flow [2023-11-24 21:41:21,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.333333333333336) internal successors, (212), 6 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:21,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:21,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:21,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:41:21,540 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:21,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:21,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1086639322, now seen corresponding path program 1 times [2023-11-24 21:41:21,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:21,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116235051] [2023-11-24 21:41:21,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:21,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116235051] [2023-11-24 21:41:21,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116235051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:21,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:41:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832840035] [2023-11-24 21:41:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:21,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:21,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 66 [2023-11-24 21:41:21,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:21,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:21,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 66 [2023-11-24 21:41:21,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:24,452 INFO L124 PetriNetUnfolderBase]: 13615/20733 cut-off events. [2023-11-24 21:41:24,452 INFO L125 PetriNetUnfolderBase]: For 20113/21226 co-relation queries the response was YES. [2023-11-24 21:41:24,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59674 conditions, 20733 events. 13615/20733 cut-off events. For 20113/21226 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 141592 event pairs, 3701 based on Foata normal form. 490/20350 useless extension candidates. Maximal degree in co-relation 59650. Up to 9549 conditions per place. [2023-11-24 21:41:24,597 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 99 selfloop transitions, 12 changer transitions 42/182 dead transitions. [2023-11-24 21:41:24,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 182 transitions, 1093 flow [2023-11-24 21:41:24,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:24,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:24,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 396 transitions. [2023-11-24 21:41:24,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:41:24,600 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 396 transitions. [2023-11-24 21:41:24,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 396 transitions. [2023-11-24 21:41:24,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:24,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 396 transitions. [2023-11-24 21:41:24,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,605 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,605 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 331 flow. Second operand 9 states and 396 transitions. [2023-11-24 21:41:24,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 182 transitions, 1093 flow [2023-11-24 21:41:24,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 182 transitions, 1024 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-24 21:41:24,898 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 394 flow [2023-11-24 21:41:24,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=394, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-11-24 21:41:24,899 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 12 predicate places. [2023-11-24 21:41:24,899 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 394 flow [2023-11-24 21:41:24,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:24,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:24,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:24,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:41:24,900 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:24,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -964800552, now seen corresponding path program 2 times [2023-11-24 21:41:24,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:24,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058399756] [2023-11-24 21:41:24,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:24,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:25,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:25,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:25,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058399756] [2023-11-24 21:41:25,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058399756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:25,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:25,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:41:25,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735933927] [2023-11-24 21:41:25,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:25,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:41:25,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:41:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:41:25,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:25,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 394 flow. Second operand has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:25,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:25,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:25,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:28,671 INFO L124 PetriNetUnfolderBase]: 11853/19769 cut-off events. [2023-11-24 21:41:28,672 INFO L125 PetriNetUnfolderBase]: For 23740/25853 co-relation queries the response was YES. [2023-11-24 21:41:28,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57484 conditions, 19769 events. 11853/19769 cut-off events. For 23740/25853 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 155842 event pairs, 4534 based on Foata normal form. 876/19252 useless extension candidates. Maximal degree in co-relation 57457. Up to 8511 conditions per place. [2023-11-24 21:41:28,831 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 66 selfloop transitions, 24 changer transitions 16/148 dead transitions. [2023-11-24 21:41:28,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 148 transitions, 900 flow [2023-11-24 21:41:28,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 410 transitions. [2023-11-24 21:41:28,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6902356902356902 [2023-11-24 21:41:28,834 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 410 transitions. [2023-11-24 21:41:28,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 410 transitions. [2023-11-24 21:41:28,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:28,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 410 transitions. [2023-11-24 21:41:28,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.55555555555556) internal successors, (410), 9 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:28,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:28,838 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:28,838 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 394 flow. Second operand 9 states and 410 transitions. [2023-11-24 21:41:28,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 148 transitions, 900 flow [2023-11-24 21:41:29,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 886 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-24 21:41:29,025 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 589 flow [2023-11-24 21:41:29,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=589, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2023-11-24 21:41:29,026 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 20 predicate places. [2023-11-24 21:41:29,026 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 589 flow [2023-11-24 21:41:29,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:29,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:29,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:29,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-24 21:41:29,027 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:29,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:29,027 INFO L85 PathProgramCache]: Analyzing trace with hash -443889538, now seen corresponding path program 1 times [2023-11-24 21:41:29,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:29,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120357585] [2023-11-24 21:41:29,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:29,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:29,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:29,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120357585] [2023-11-24 21:41:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120357585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-24 21:41:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369276212] [2023-11-24 21:41:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 21:41:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 21:41:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-24 21:41:30,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 66 [2023-11-24 21:41:30,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 589 flow. Second operand has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:30,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:30,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 66 [2023-11-24 21:41:30,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:33,593 INFO L124 PetriNetUnfolderBase]: 14988/25094 cut-off events. [2023-11-24 21:41:33,593 INFO L125 PetriNetUnfolderBase]: For 48658/51585 co-relation queries the response was YES. [2023-11-24 21:41:33,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81162 conditions, 25094 events. 14988/25094 cut-off events. For 48658/51585 co-relation queries the response was YES. Maximal size of possible extension queue 1229. Compared 206136 event pairs, 5399 based on Foata normal form. 1193/24650 useless extension candidates. Maximal degree in co-relation 81129. Up to 10088 conditions per place. [2023-11-24 21:41:33,792 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 91 selfloop transitions, 16 changer transitions 17/166 dead transitions. [2023-11-24 21:41:33,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 1203 flow [2023-11-24 21:41:33,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:41:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:41:33,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 411 transitions. [2023-11-24 21:41:33,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6919191919191919 [2023-11-24 21:41:33,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 411 transitions. [2023-11-24 21:41:33,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 411 transitions. [2023-11-24 21:41:33,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:33,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 411 transitions. [2023-11-24 21:41:33,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.666666666666664) internal successors, (411), 9 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:33,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:33,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 66.0) internal successors, (660), 10 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:33,799 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 589 flow. Second operand 9 states and 411 transitions. [2023-11-24 21:41:33,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 1203 flow [2023-11-24 21:41:34,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1168 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-24 21:41:34,279 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 711 flow [2023-11-24 21:41:34,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=711, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2023-11-24 21:41:34,280 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 28 predicate places. [2023-11-24 21:41:34,280 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 711 flow [2023-11-24 21:41:34,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 37.111111111111114) internal successors, (334), 9 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:34,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:34,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-24 21:41:34,281 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:34,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -192642976, now seen corresponding path program 3 times [2023-11-24 21:41:34,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:34,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054151883] [2023-11-24 21:41:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:34,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:34,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:34,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054151883] [2023-11-24 21:41:34,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054151883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:34,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:34,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:41:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108200384] [2023-11-24 21:41:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:34,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:41:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:34,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:41:34,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:41:34,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 66 [2023-11-24 21:41:34,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 711 flow. Second operand has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:34,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:34,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 66 [2023-11-24 21:41:34,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:41:39,053 INFO L124 PetriNetUnfolderBase]: 22673/33032 cut-off events. [2023-11-24 21:41:39,053 INFO L125 PetriNetUnfolderBase]: For 92978/95015 co-relation queries the response was YES. [2023-11-24 21:41:39,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118848 conditions, 33032 events. 22673/33032 cut-off events. For 92978/95015 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 218427 event pairs, 1427 based on Foata normal form. 1164/33530 useless extension candidates. Maximal degree in co-relation 118811. Up to 10824 conditions per place. [2023-11-24 21:41:39,300 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 139 selfloop transitions, 18 changer transitions 42/225 dead transitions. [2023-11-24 21:41:39,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 225 transitions, 2052 flow [2023-11-24 21:41:39,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:41:39,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:41:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2023-11-24 21:41:39,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6861471861471862 [2023-11-24 21:41:39,303 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 317 transitions. [2023-11-24 21:41:39,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 317 transitions. [2023-11-24 21:41:39,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:41:39,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 317 transitions. [2023-11-24 21:41:39,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.285714285714285) internal successors, (317), 7 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:39,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:39,307 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 66.0) internal successors, (528), 8 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:39,307 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 711 flow. Second operand 7 states and 317 transitions. [2023-11-24 21:41:39,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 225 transitions, 2052 flow [2023-11-24 21:41:41,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 225 transitions, 1976 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-11-24 21:41:41,237 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 600 flow [2023-11-24 21:41:41,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=600, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2023-11-24 21:41:41,237 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 29 predicate places. [2023-11-24 21:41:41,238 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 600 flow [2023-11-24 21:41:41,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.142857142857146) internal successors, (246), 7 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:41,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:41:41,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:41:41,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-24 21:41:41,239 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-24 21:41:41,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:41:41,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1478280886, now seen corresponding path program 1 times [2023-11-24 21:41:41,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:41:41,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844040424] [2023-11-24 21:41:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:41:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:41:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:41:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:41:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:41:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844040424] [2023-11-24 21:41:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844040424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:41:41,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:41:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:41:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680875616] [2023-11-24 21:41:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:41:41,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:41:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:41:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:41:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:41:41,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 66 [2023-11-24 21:41:41,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 600 flow. Second operand has 6 states, 6 states have (on average 36.666666666666664) internal successors, (220), 6 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:41:41,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:41:41,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 66 [2023-11-24 21:41:41,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand