./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix007.opt.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_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix007.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme --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 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:44:11,744 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:11,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:44:11,825 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:11,825 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:11,851 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:11,852 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:11,852 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:11,853 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:11,854 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:11,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:11,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:11,856 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:11,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:11,857 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:11,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:11,858 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:44:11,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:44:11,859 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:44:11,859 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:11,860 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:44:11,860 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:44:11,861 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:44:11,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:11,862 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:44:11,862 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:44:11,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:44:11,863 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:11,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:11,864 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:11,864 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:11,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:11,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:11,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:11,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:11,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:44:11,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:44:11,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:11,868 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:11,868 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:11,868 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:11,869 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_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 98fb631b7747d0724c093b074b80cf02851c21b4b9e1af2c5f1e3d032d6b592f [2023-11-26 11:44:12,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:12,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:12,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:12,212 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:12,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:12,214 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/mix007.opt.i [2023-11-26 11:44:15,311 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:15,661 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:15,661 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/sv-benchmarks/c/pthread-wmm/mix007.opt.i [2023-11-26 11:44:15,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/data/8448af321/59225ac610ed4c85900ef901a22c61da/FLAG4b64921da [2023-11-26 11:44:15,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/data/8448af321/59225ac610ed4c85900ef901a22c61da [2023-11-26 11:44:15,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:15,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:15,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:15,716 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:15,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:15,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:15" (1/1) ... [2023-11-26 11:44:15,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40aeb097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:15, skipping insertion in model container [2023-11-26 11:44:15,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:15" (1/1) ... [2023-11-26 11:44:15,779 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:16,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:16,347 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:16,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:16,471 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:44:16,471 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:44:16,480 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:16,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16 WrapperNode [2023-11-26 11:44:16,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:16,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:16,483 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:16,483 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:16,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,584 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 171 [2023-11-26 11:44:16,592 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:16,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:16,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:16,593 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:16,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,621 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,656 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]. [2023-11-26 11:44:16,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,678 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,681 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:16,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:16,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:16,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:16,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (1/1) ... [2023-11-26 11:44:16,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:16,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:16,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:16,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6a5074-8d55-4e51-af69-89a31b49a3b1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:44:16,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:44:16,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:16,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:44:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:44:16,798 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:44:16,799 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:44:16,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:44:16,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:44:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:44:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:44:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:44:16,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:44:16,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:44:16,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:44:16,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:16,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:16,805 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:44:17,033 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:17,035 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:17,566 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:17,850 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:17,851 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:44:17,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:17 BoogieIcfgContainer [2023-11-26 11:44:17,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:17,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:17,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:17,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:17,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:15" (1/3) ... [2023-11-26 11:44:17,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a617c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:17, skipping insertion in model container [2023-11-26 11:44:17,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:16" (2/3) ... [2023-11-26 11:44:17,883 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a617c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:17, skipping insertion in model container [2023-11-26 11:44:17,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:17" (3/3) ... [2023-11-26 11:44:17,885 INFO L112 eAbstractionObserver]: Analyzing ICFG mix007.opt.i [2023-11-26 11:44:17,906 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:17,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-26 11:44:17,907 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:44:17,982 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:44:18,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 11:44:18,081 INFO L124 PetriNetUnfolderBase]: 2/63 cut-off events. [2023-11-26 11:44:18,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:44:18,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-11-26 11:44:18,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 67 transitions, 150 flow [2023-11-26 11:44:18,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 63 transitions, 138 flow [2023-11-26 11:44:18,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:18,119 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;@34909e5c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:18,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-26 11:44:18,126 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:44:18,126 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:44:18,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:44:18,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:18,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:44:18,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:18,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:18,137 INFO L85 PathProgramCache]: Analyzing trace with hash 14648, now seen corresponding path program 1 times [2023-11-26 11:44:18,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:18,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982904336] [2023-11-26 11:44:18,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:18,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:18,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982904336] [2023-11-26 11:44:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982904336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:18,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:18,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:44:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778410595] [2023-11-26 11:44:18,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:18,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:18,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:18,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:44:18,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 138 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) [2023-11-26 11:44:18,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:18,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:44:18,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:19,313 INFO L124 PetriNetUnfolderBase]: 1419/2603 cut-off events. [2023-11-26 11:44:19,314 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-26 11:44:19,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4680 conditions, 2603 events. 1419/2603 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20405 event pairs, 1059 based on Foata normal form. 144/2586 useless extension candidates. Maximal degree in co-relation 4665. Up to 1529 conditions per place. [2023-11-26 11:44:19,353 INFO L140 encePairwiseOnDemand]: 62/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 11:44:19,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 216 flow [2023-11-26 11:44:19,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:19,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:44:19,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:44:19,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:44:19,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:44:19,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:19,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:44:19,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:19,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:19,392 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 138 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:44:19,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 216 flow [2023-11-26 11:44:19,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:44:19,406 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-26 11:44:19,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-26 11:44:19,412 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -4 predicate places. [2023-11-26 11:44:19,412 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-26 11:44:19,413 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) [2023-11-26 11:44:19,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:19,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:44:19,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:44:19,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:19,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:19,414 INFO L85 PathProgramCache]: Analyzing trace with hash 14649, now seen corresponding path program 1 times [2023-11-26 11:44:19,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:19,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755801748] [2023-11-26 11:44:19,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:19,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:19,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:19,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755801748] [2023-11-26 11:44:19,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755801748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:19,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:19,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:44:19,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322927781] [2023-11-26 11:44:19,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:19,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:19,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:44:19,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:19,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:19,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:44:19,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:20,236 INFO L124 PetriNetUnfolderBase]: 1419/2602 cut-off events. [2023-11-26 11:44:20,237 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:44:20,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4748 conditions, 2602 events. 1419/2602 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20449 event pairs, 1059 based on Foata normal form. 1/2442 useless extension candidates. Maximal degree in co-relation 4737. Up to 1528 conditions per place. [2023-11-26 11:44:20,268 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 11:44:20,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 212 flow [2023-11-26 11:44:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:20,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:44:20,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:44:20,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:44:20,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:44:20,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:20,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:44:20,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,286 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:44:20,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 212 flow [2023-11-26 11:44:20,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:20,295 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-26 11:44:20,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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} [2023-11-26 11:44:20,303 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -5 predicate places. [2023-11-26 11:44:20,303 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-26 11:44:20,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:20,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:44:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:44:20,304 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:20,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash 436829672, now seen corresponding path program 1 times [2023-11-26 11:44:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374959246] [2023-11-26 11:44:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:20,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374959246] [2023-11-26 11:44:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374959246] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089808947] [2023-11-26 11:44:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:20,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:20,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:44:20,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:20,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:20,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:44:20,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:20,970 INFO L124 PetriNetUnfolderBase]: 1420/2600 cut-off events. [2023-11-26 11:44:20,970 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-11-26 11:44:20,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 2600 events. 1420/2600 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20363 event pairs, 1059 based on Foata normal form. 0/2443 useless extension candidates. Maximal degree in co-relation 4738. Up to 1528 conditions per place. [2023-11-26 11:44:21,000 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-26 11:44:21,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 212 flow [2023-11-26 11:44:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:44:21,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:44:21,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:44:21,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:44:21,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:21,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:44:21,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,005 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:44:21,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 212 flow [2023-11-26 11:44:21,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:21,012 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-26 11:44:21,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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} [2023-11-26 11:44:21,013 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-26 11:44:21,013 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-26 11:44:21,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:21,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:44:21,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:44:21,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:21,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:21,014 INFO L85 PathProgramCache]: Analyzing trace with hash 436829673, now seen corresponding path program 1 times [2023-11-26 11:44:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765675047] [2023-11-26 11:44:21,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:21,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:21,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:21,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765675047] [2023-11-26 11:44:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765675047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:21,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:21,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507067956] [2023-11-26 11:44:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:21,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:21,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:21,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:44:21,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:21,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:44:21,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:21,736 INFO L124 PetriNetUnfolderBase]: 1419/2598 cut-off events. [2023-11-26 11:44:21,736 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:44:21,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2598 events. 1419/2598 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20243 event pairs, 898 based on Foata normal form. 2/2444 useless extension candidates. Maximal degree in co-relation 4735. Up to 1525 conditions per place. [2023-11-26 11:44:21,771 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:44:21,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 208 flow [2023-11-26 11:44:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:44:21,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:44:21,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:44:21,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:44:21,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:21,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:44:21,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,778 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,778 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:44:21,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 208 flow [2023-11-26 11:44:21,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 65 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:21,785 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-26 11:44:21,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-26 11:44:21,786 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -7 predicate places. [2023-11-26 11:44:21,787 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-26 11:44:21,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:21,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:21,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:44:21,788 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:21,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:21,788 INFO L85 PathProgramCache]: Analyzing trace with hash -157693391, now seen corresponding path program 1 times [2023-11-26 11:44:21,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:21,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960120125] [2023-11-26 11:44:21,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:21,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:21,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960120125] [2023-11-26 11:44:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960120125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:21,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:21,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158338467] [2023-11-26 11:44:21,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:21,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:21,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:21,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:21,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:21,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:44:21,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:21,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:21,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:44:21,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:22,454 INFO L124 PetriNetUnfolderBase]: 1423/2590 cut-off events. [2023-11-26 11:44:22,455 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-11-26 11:44:22,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2590 events. 1423/2590 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20334 event pairs, 1060 based on Foata normal form. 0/2446 useless extension candidates. Maximal degree in co-relation 4735. Up to 1524 conditions per place. [2023-11-26 11:44:22,480 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-26 11:44:22,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 208 flow [2023-11-26 11:44:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:22,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:44:22,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:44:22,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:44:22,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:44:22,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:22,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:44:22,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:22,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:22,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:22,486 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:44:22,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 208 flow [2023-11-26 11:44:22,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:22,495 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-26 11:44:22,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-26 11:44:22,496 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -8 predicate places. [2023-11-26 11:44:22,496 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-26 11:44:22,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:22,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:22,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:44:22,497 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:22,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash -157693390, now seen corresponding path program 1 times [2023-11-26 11:44:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:22,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068846123] [2023-11-26 11:44:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068846123] [2023-11-26 11:44:22,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068846123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:22,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:22,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:22,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192184710] [2023-11-26 11:44:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:22,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:44:22,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:22,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:22,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:44:22,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:23,111 INFO L124 PetriNetUnfolderBase]: 1419/2590 cut-off events. [2023-11-26 11:44:23,112 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:44:23,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4739 conditions, 2590 events. 1419/2590 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 19950 event pairs, 743 based on Foata normal form. 4/2448 useless extension candidates. Maximal degree in co-relation 4729. Up to 1516 conditions per place. [2023-11-26 11:44:23,142 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-26 11:44:23,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 63 transitions, 204 flow [2023-11-26 11:44:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:44:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:44:23,144 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:44:23,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:44:23,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:23,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:44:23,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,147 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:44:23,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 63 transitions, 204 flow [2023-11-26 11:44:23,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 63 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:23,151 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-26 11:44:23,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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} [2023-11-26 11:44:23,154 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2023-11-26 11:44:23,154 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-26 11:44:23,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:23,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:44:23,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:23,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash 850864651, now seen corresponding path program 1 times [2023-11-26 11:44:23,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:23,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169354924] [2023-11-26 11:44:23,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:23,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169354924] [2023-11-26 11:44:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169354924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:23,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:23,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:23,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15744112] [2023-11-26 11:44:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:23,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:23,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:23,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:23,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:23,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 67 [2023-11-26 11:44:23,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:23,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 67 [2023-11-26 11:44:23,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:23,754 INFO L124 PetriNetUnfolderBase]: 1439/2564 cut-off events. [2023-11-26 11:44:23,754 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-11-26 11:44:23,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4745 conditions, 2564 events. 1439/2564 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 19009 event pairs, 937 based on Foata normal form. 0/2441 useless extension candidates. Maximal degree in co-relation 4735. Up to 1516 conditions per place. [2023-11-26 11:44:23,777 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 32 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-26 11:44:23,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 62 transitions, 204 flow [2023-11-26 11:44:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:23,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2023-11-26 11:44:23,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7412935323383084 [2023-11-26 11:44:23,786 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 149 transitions. [2023-11-26 11:44:23,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 149 transitions. [2023-11-26 11:44:23,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:23,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 149 transitions. [2023-11-26 11:44:23,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,788 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,789 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 149 transitions. [2023-11-26 11:44:23,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 62 transitions, 204 flow [2023-11-26 11:44:23,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:23,793 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 118 flow [2023-11-26 11:44:23,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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} [2023-11-26 11:44:23,794 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -10 predicate places. [2023-11-26 11:44:23,794 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 118 flow [2023-11-26 11:44:23,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:23,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:23,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:44:23,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:23,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 850864652, now seen corresponding path program 1 times [2023-11-26 11:44:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757020667] [2023-11-26 11:44:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:23,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:23,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757020667] [2023-11-26 11:44:23,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757020667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:23,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:23,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081981201] [2023-11-26 11:44:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:23,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:23,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:23,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:23,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:23,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 67 [2023-11-26 11:44:23,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:23,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:23,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 67 [2023-11-26 11:44:23,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:24,379 INFO L124 PetriNetUnfolderBase]: 1419/2530 cut-off events. [2023-11-26 11:44:24,379 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-26 11:44:24,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 2530 events. 1419/2530 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 18515 event pairs, 923 based on Foata normal form. 12/2423 useless extension candidates. Maximal degree in co-relation 4677. Up to 1484 conditions per place. [2023-11-26 11:44:24,404 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 31 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-11-26 11:44:24,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 61 transitions, 200 flow [2023-11-26 11:44:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2023-11-26 11:44:24,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7512437810945274 [2023-11-26 11:44:24,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 151 transitions. [2023-11-26 11:44:24,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 151 transitions. [2023-11-26 11:44:24,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:24,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 151 transitions. [2023-11-26 11:44:24,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:24,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:24,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:24,414 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 118 flow. Second operand 3 states and 151 transitions. [2023-11-26 11:44:24,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 61 transitions, 200 flow [2023-11-26 11:44:24,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:24,419 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 116 flow [2023-11-26 11:44:24,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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} [2023-11-26 11:44:24,423 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -11 predicate places. [2023-11-26 11:44:24,423 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 116 flow [2023-11-26 11:44:24,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:24,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:24,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:24,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:44:24,425 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P3Err0ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:24,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:24,425 INFO L85 PathProgramCache]: Analyzing trace with hash -787711524, now seen corresponding path program 1 times [2023-11-26 11:44:24,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:24,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706668221] [2023-11-26 11:44:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:24,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706668221] [2023-11-26 11:44:24,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706668221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:24,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:24,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:44:24,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167229221] [2023-11-26 11:44:24,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:24,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:24,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:24,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:24,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 67 [2023-11-26 11:44:24,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:24,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:24,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 67 [2023-11-26 11:44:24,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:25,080 INFO L124 PetriNetUnfolderBase]: 1175/2022 cut-off events. [2023-11-26 11:44:25,080 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-26 11:44:25,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3827 conditions, 2022 events. 1175/2022 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14621 event pairs, 199 based on Foata normal form. 0/2001 useless extension candidates. Maximal degree in co-relation 3817. Up to 1361 conditions per place. [2023-11-26 11:44:25,101 INFO L140 encePairwiseOnDemand]: 64/67 looper letters, 30 selfloop transitions, 2 changer transitions 2/62 dead transitions. [2023-11-26 11:44:25,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 62 transitions, 206 flow [2023-11-26 11:44:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-26 11:44:25,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7711442786069652 [2023-11-26 11:44:25,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-26 11:44:25,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-26 11:44:25,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:25,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-26 11:44:25,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:25,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:25,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 67.0) internal successors, (268), 4 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:25,107 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 116 flow. Second operand 3 states and 155 transitions. [2023-11-26 11:44:25,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 62 transitions, 206 flow [2023-11-26 11:44:25,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 62 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:25,110 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 112 flow [2023-11-26 11:44:25,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, 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=112, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2023-11-26 11:44:25,111 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -12 predicate places. [2023-11-26 11:44:25,111 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 112 flow [2023-11-26 11:44:25,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:25,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:25,112 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] [2023-11-26 11:44:25,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:44:25,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:25,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1873074494, now seen corresponding path program 1 times [2023-11-26 11:44:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699229571] [2023-11-26 11:44:25,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:25,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:26,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:26,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699229571] [2023-11-26 11:44:26,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699229571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:26,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:26,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:44:26,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265475058] [2023-11-26 11:44:26,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:26,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:44:26,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:26,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:44:26,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:44:26,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 67 [2023-11-26 11:44:26,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:26,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:26,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 67 [2023-11-26 11:44:26,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:27,220 INFO L124 PetriNetUnfolderBase]: 1031/1806 cut-off events. [2023-11-26 11:44:27,220 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-11-26 11:44:27,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1806 events. 1031/1806 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 12689 event pairs, 240 based on Foata normal form. 60/1859 useless extension candidates. Maximal degree in co-relation 3413. Up to 756 conditions per place. [2023-11-26 11:44:27,238 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 34 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-11-26 11:44:27,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 260 flow [2023-11-26 11:44:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:44:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:44:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2023-11-26 11:44:27,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6455223880597015 [2023-11-26 11:44:27,241 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2023-11-26 11:44:27,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2023-11-26 11:44:27,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:27,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2023-11-26 11:44:27,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,245 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,246 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 112 flow. Second operand 8 states and 346 transitions. [2023-11-26 11:44:27,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 260 flow [2023-11-26 11:44:27,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:27,248 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 114 flow [2023-11-26 11:44:27,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-11-26 11:44:27,249 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -9 predicate places. [2023-11-26 11:44:27,250 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 114 flow [2023-11-26 11:44:27,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 38.7) internal successors, (387), 10 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:27,251 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] [2023-11-26 11:44:27,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:44:27,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:27,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:27,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1873073213, now seen corresponding path program 1 times [2023-11-26 11:44:27,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:27,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597165095] [2023-11-26 11:44:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:27,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:27,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597165095] [2023-11-26 11:44:27,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597165095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:27,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:27,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:44:27,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981526053] [2023-11-26 11:44:27,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:27,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:27,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:27,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:44:27,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:27,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:27,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:44:27,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:30,635 INFO L124 PetriNetUnfolderBase]: 13564/20818 cut-off events. [2023-11-26 11:44:30,636 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2023-11-26 11:44:30,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40507 conditions, 20818 events. 13564/20818 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 1231. Compared 161829 event pairs, 3390 based on Foata normal form. 0/20173 useless extension candidates. Maximal degree in co-relation 40496. Up to 8336 conditions per place. [2023-11-26 11:44:30,808 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 43 selfloop transitions, 8 changer transitions 84/155 dead transitions. [2023-11-26 11:44:30,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 624 flow [2023-11-26 11:44:30,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:44:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:44:30,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 434 transitions. [2023-11-26 11:44:30,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7197346600331676 [2023-11-26 11:44:30,812 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 434 transitions. [2023-11-26 11:44:30,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 434 transitions. [2023-11-26 11:44:30,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:30,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 434 transitions. [2023-11-26 11:44:30,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,818 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,818 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 114 flow. Second operand 9 states and 434 transitions. [2023-11-26 11:44:30,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 624 flow [2023-11-26 11:44:30,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 155 transitions, 602 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-26 11:44:30,824 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 216 flow [2023-11-26 11:44:30,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2023-11-26 11:44:30,825 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-26 11:44:30,825 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 216 flow [2023-11-26 11:44:30,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:30,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:30,826 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] [2023-11-26 11:44:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:44:30,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1891039106, now seen corresponding path program 1 times [2023-11-26 11:44:30,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:30,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405988112] [2023-11-26 11:44:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405988112] [2023-11-26 11:44:31,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405988112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:31,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:44:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391867241] [2023-11-26 11:44:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:44:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:44:31,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:44:31,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:44:31,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:31,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:31,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:44:31,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:33,410 INFO L124 PetriNetUnfolderBase]: 9538/15393 cut-off events. [2023-11-26 11:44:33,411 INFO L125 PetriNetUnfolderBase]: For 22493/22493 co-relation queries the response was YES. [2023-11-26 11:44:33,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47202 conditions, 15393 events. 9538/15393 cut-off events. For 22493/22493 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 119132 event pairs, 1728 based on Foata normal form. 420/15721 useless extension candidates. Maximal degree in co-relation 47183. Up to 5580 conditions per place. [2023-11-26 11:44:33,570 INFO L140 encePairwiseOnDemand]: 56/67 looper letters, 50 selfloop transitions, 9 changer transitions 76/155 dead transitions. [2023-11-26 11:44:33,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 155 transitions, 1022 flow [2023-11-26 11:44:33,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:44:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:44:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 452 transitions. [2023-11-26 11:44:33,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6746268656716418 [2023-11-26 11:44:33,573 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 452 transitions. [2023-11-26 11:44:33,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 452 transitions. [2023-11-26 11:44:33,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:33,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 452 transitions. [2023-11-26 11:44:33,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 45.2) internal successors, (452), 10 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:33,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:33,580 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:33,580 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 216 flow. Second operand 10 states and 452 transitions. [2023-11-26 11:44:33,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 155 transitions, 1022 flow [2023-11-26 11:44:33,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 155 transitions, 872 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-11-26 11:44:33,716 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 282 flow [2023-11-26 11:44:33,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=282, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2023-11-26 11:44:33,717 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-11-26 11:44:33,718 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 282 flow [2023-11-26 11:44:33,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:33,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:33,718 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] [2023-11-26 11:44:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:44:33,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:33,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:33,719 INFO L85 PathProgramCache]: Analyzing trace with hash -132730924, now seen corresponding path program 1 times [2023-11-26 11:44:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561861301] [2023-11-26 11:44:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:34,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:34,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561861301] [2023-11-26 11:44:34,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561861301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:34,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:44:34,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967271573] [2023-11-26 11:44:34,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:34,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:34,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:34,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 67 [2023-11-26 11:44:34,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:34,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:34,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 67 [2023-11-26 11:44:34,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:35,988 INFO L124 PetriNetUnfolderBase]: 7084/12463 cut-off events. [2023-11-26 11:44:35,988 INFO L125 PetriNetUnfolderBase]: For 21502/21602 co-relation queries the response was YES. [2023-11-26 11:44:36,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37392 conditions, 12463 events. 7084/12463 cut-off events. For 21502/21602 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 104698 event pairs, 1989 based on Foata normal form. 296/12551 useless extension candidates. Maximal degree in co-relation 37366. Up to 7257 conditions per place. [2023-11-26 11:44:36,120 INFO L140 encePairwiseOnDemand]: 61/67 looper letters, 42 selfloop transitions, 6 changer transitions 33/109 dead transitions. [2023-11-26 11:44:36,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 109 transitions, 698 flow [2023-11-26 11:44:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:44:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:44:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 321 transitions. [2023-11-26 11:44:36,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6844349680170576 [2023-11-26 11:44:36,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 321 transitions. [2023-11-26 11:44:36,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 321 transitions. [2023-11-26 11:44:36,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:36,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 321 transitions. [2023-11-26 11:44:36,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.857142857142854) internal successors, (321), 7 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:36,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:36,132 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 67.0) internal successors, (536), 8 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:36,132 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 282 flow. Second operand 7 states and 321 transitions. [2023-11-26 11:44:36,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 109 transitions, 698 flow [2023-11-26 11:44:36,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 109 transitions, 665 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-26 11:44:36,588 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 343 flow [2023-11-26 11:44:36,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-11-26 11:44:36,590 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-11-26 11:44:36,590 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 343 flow [2023-11-26 11:44:36,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:36,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:36,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:44:36,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:44:36,591 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:36,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash 450638567, now seen corresponding path program 1 times [2023-11-26 11:44:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783648562] [2023-11-26 11:44:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:36,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:36,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:36,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:36,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783648562] [2023-11-26 11:44:36,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783648562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:36,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:36,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:44:36,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892451892] [2023-11-26 11:44:36,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:36,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:44:36,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:36,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:44:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:44:36,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 67 [2023-11-26 11:44:36,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:36,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:36,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 67 [2023-11-26 11:44:36,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:39,209 INFO L124 PetriNetUnfolderBase]: 7696/12677 cut-off events. [2023-11-26 11:44:39,209 INFO L125 PetriNetUnfolderBase]: For 27352/27352 co-relation queries the response was YES. [2023-11-26 11:44:39,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41494 conditions, 12677 events. 7696/12677 cut-off events. For 27352/27352 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 98608 event pairs, 1507 based on Foata normal form. 264/12855 useless extension candidates. Maximal degree in co-relation 41466. Up to 4402 conditions per place. [2023-11-26 11:44:39,314 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 63 selfloop transitions, 12 changer transitions 62/157 dead transitions. [2023-11-26 11:44:39,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 157 transitions, 1131 flow [2023-11-26 11:44:39,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:44:39,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-26 11:44:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 447 transitions. [2023-11-26 11:44:39,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6671641791044776 [2023-11-26 11:44:39,317 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 447 transitions. [2023-11-26 11:44:39,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 447 transitions. [2023-11-26 11:44:39,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:39,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 447 transitions. [2023-11-26 11:44:39,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 44.7) internal successors, (447), 10 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:39,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:39,322 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 67.0) internal successors, (737), 11 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:39,322 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 343 flow. Second operand 10 states and 447 transitions. [2023-11-26 11:44:39,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 157 transitions, 1131 flow [2023-11-26 11:44:39,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 157 transitions, 1069 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-11-26 11:44:39,674 INFO L231 Difference]: Finished difference. Result has 88 places, 69 transitions, 441 flow [2023-11-26 11:44:39,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=88, PETRI_TRANSITIONS=69} [2023-11-26 11:44:39,675 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-11-26 11:44:39,675 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 69 transitions, 441 flow [2023-11-26 11:44:39,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:39,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:39,676 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] [2023-11-26 11:44:39,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:44:39,676 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:39,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:39,677 INFO L85 PathProgramCache]: Analyzing trace with hash -746331894, now seen corresponding path program 1 times [2023-11-26 11:44:39,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:39,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55543886] [2023-11-26 11:44:39,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:39,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:39,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:39,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:39,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55543886] [2023-11-26 11:44:39,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55543886] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:39,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:39,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:44:39,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098644130] [2023-11-26 11:44:39,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:39,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:44:39,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:39,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:44:39,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:44:39,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-26 11:44:39,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 69 transitions, 441 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:39,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:39,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-26 11:44:39,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:43,451 INFO L124 PetriNetUnfolderBase]: 15998/24258 cut-off events. [2023-11-26 11:44:43,452 INFO L125 PetriNetUnfolderBase]: For 46641/50705 co-relation queries the response was YES. [2023-11-26 11:44:43,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69171 conditions, 24258 events. 15998/24258 cut-off events. For 46641/50705 co-relation queries the response was YES. Maximal size of possible extension queue 1242. Compared 179756 event pairs, 2547 based on Foata normal form. 986/24337 useless extension candidates. Maximal degree in co-relation 69139. Up to 12957 conditions per place. [2023-11-26 11:44:43,664 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 60 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-11-26 11:44:43,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 105 transitions, 755 flow [2023-11-26 11:44:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:44:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:44:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 196 transitions. [2023-11-26 11:44:43,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7313432835820896 [2023-11-26 11:44:43,665 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 196 transitions. [2023-11-26 11:44:43,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 196 transitions. [2023-11-26 11:44:43,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:43,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 196 transitions. [2023-11-26 11:44:43,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:43,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:43,667 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:43,667 INFO L175 Difference]: Start difference. First operand has 88 places, 69 transitions, 441 flow. Second operand 4 states and 196 transitions. [2023-11-26 11:44:43,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 105 transitions, 755 flow [2023-11-26 11:44:44,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 733 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-26 11:44:44,091 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 465 flow [2023-11-26 11:44:44,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=465, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2023-11-26 11:44:44,091 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-26 11:44:44,092 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 465 flow [2023-11-26 11:44:44,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:44,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:44,092 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] [2023-11-26 11:44:44,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:44:44,092 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:44,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:44,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1172873309, now seen corresponding path program 1 times [2023-11-26 11:44:44,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:44,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715611764] [2023-11-26 11:44:44,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:44,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:44,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715611764] [2023-11-26 11:44:44,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715611764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:44,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:44,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:44:44,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098590969] [2023-11-26 11:44:44,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:44,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:44:44,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:44:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:44:44,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-26 11:44:44,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 465 flow. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:44,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:44,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-26 11:44:44,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:47,612 INFO L124 PetriNetUnfolderBase]: 13837/21233 cut-off events. [2023-11-26 11:44:47,613 INFO L125 PetriNetUnfolderBase]: For 34016/38614 co-relation queries the response was YES. [2023-11-26 11:44:47,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64945 conditions, 21233 events. 13837/21233 cut-off events. For 34016/38614 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 154429 event pairs, 1232 based on Foata normal form. 1041/21557 useless extension candidates. Maximal degree in co-relation 64914. Up to 8325 conditions per place. [2023-11-26 11:44:47,789 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 78 selfloop transitions, 10 changer transitions 0/127 dead transitions. [2023-11-26 11:44:47,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 127 transitions, 932 flow [2023-11-26 11:44:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:44:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:44:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 249 transitions. [2023-11-26 11:44:47,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7432835820895523 [2023-11-26 11:44:47,792 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 249 transitions. [2023-11-26 11:44:47,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 249 transitions. [2023-11-26 11:44:47,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:47,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 249 transitions. [2023-11-26 11:44:47,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 49.8) internal successors, (249), 5 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:47,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:47,795 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:47,796 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 465 flow. Second operand 5 states and 249 transitions. [2023-11-26 11:44:47,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 127 transitions, 932 flow [2023-11-26 11:44:47,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 127 transitions, 921 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-26 11:44:47,858 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 522 flow [2023-11-26 11:44:47,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2023-11-26 11:44:47,859 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 11 predicate places. [2023-11-26 11:44:47,859 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 522 flow [2023-11-26 11:44:47,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:47,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:47,860 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] [2023-11-26 11:44:47,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:44:47,860 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:47,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:47,861 INFO L85 PathProgramCache]: Analyzing trace with hash -390267264, now seen corresponding path program 1 times [2023-11-26 11:44:47,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:47,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043620449] [2023-11-26 11:44:47,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:47,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:48,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:48,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:48,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043620449] [2023-11-26 11:44:48,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043620449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:48,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:48,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:44:48,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784555055] [2023-11-26 11:44:48,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:48,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:44:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:44:48,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:44:48,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-26 11:44:48,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 522 flow. Second operand has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:48,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:48,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-26 11:44:48,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:50,738 INFO L124 PetriNetUnfolderBase]: 10901/16745 cut-off events. [2023-11-26 11:44:50,738 INFO L125 PetriNetUnfolderBase]: For 38586/45203 co-relation queries the response was YES. [2023-11-26 11:44:50,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57637 conditions, 16745 events. 10901/16745 cut-off events. For 38586/45203 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 117693 event pairs, 662 based on Foata normal form. 898/16992 useless extension candidates. Maximal degree in co-relation 57605. Up to 5684 conditions per place. [2023-11-26 11:44:50,875 INFO L140 encePairwiseOnDemand]: 60/67 looper letters, 90 selfloop transitions, 14 changer transitions 0/143 dead transitions. [2023-11-26 11:44:50,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 143 transitions, 1083 flow [2023-11-26 11:44:50,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:44:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:44:50,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2023-11-26 11:44:50,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.746268656716418 [2023-11-26 11:44:50,877 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 300 transitions. [2023-11-26 11:44:50,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 300 transitions. [2023-11-26 11:44:50,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:50,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 300 transitions. [2023-11-26 11:44:50,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:50,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:50,881 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 67.0) internal successors, (469), 7 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:50,882 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 522 flow. Second operand 6 states and 300 transitions. [2023-11-26 11:44:50,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 143 transitions, 1083 flow [2023-11-26 11:44:50,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 143 transitions, 1067 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:50,922 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 592 flow [2023-11-26 11:44:50,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=592, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-26 11:44:50,922 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 16 predicate places. [2023-11-26 11:44:50,922 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 592 flow [2023-11-26 11:44:50,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.333333333333336) internal successors, (230), 6 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:50,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:50,923 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] [2023-11-26 11:44:50,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:44:50,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:50,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:50,924 INFO L85 PathProgramCache]: Analyzing trace with hash -562020463, now seen corresponding path program 1 times [2023-11-26 11:44:50,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:50,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199485556] [2023-11-26 11:44:50,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:50,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:51,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:51,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:51,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199485556] [2023-11-26 11:44:51,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199485556] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:51,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:51,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:44:51,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77905470] [2023-11-26 11:44:51,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:51,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:44:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:44:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:44:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 67 [2023-11-26 11:44:51,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:51,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:51,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 67 [2023-11-26 11:44:51,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:54,626 INFO L124 PetriNetUnfolderBase]: 11912/19857 cut-off events. [2023-11-26 11:44:54,626 INFO L125 PetriNetUnfolderBase]: For 62994/68323 co-relation queries the response was YES. [2023-11-26 11:44:54,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70003 conditions, 19857 events. 11912/19857 cut-off events. For 62994/68323 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 158754 event pairs, 2803 based on Foata normal form. 541/18816 useless extension candidates. Maximal degree in co-relation 69969. Up to 7239 conditions per place. [2023-11-26 11:44:54,815 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 82 selfloop transitions, 44 changer transitions 27/187 dead transitions. [2023-11-26 11:44:54,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 187 transitions, 1520 flow [2023-11-26 11:44:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:44:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-26 11:44:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 409 transitions. [2023-11-26 11:44:54,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782752902155887 [2023-11-26 11:44:54,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 409 transitions. [2023-11-26 11:44:54,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 409 transitions. [2023-11-26 11:44:54,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:54,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 409 transitions. [2023-11-26 11:44:54,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 45.44444444444444) internal successors, (409), 9 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:54,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:54,823 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:54,823 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 592 flow. Second operand 9 states and 409 transitions. [2023-11-26 11:44:54,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 187 transitions, 1520 flow [2023-11-26 11:44:55,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 187 transitions, 1489 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-26 11:44:55,054 INFO L231 Difference]: Finished difference. Result has 102 places, 110 transitions, 1036 flow [2023-11-26 11:44:55,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1036, PETRI_PLACES=102, PETRI_TRANSITIONS=110} [2023-11-26 11:44:55,055 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2023-11-26 11:44:55,055 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 110 transitions, 1036 flow [2023-11-26 11:44:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.833333333333336) internal successors, (215), 6 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:55,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:55,056 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] [2023-11-26 11:44:55,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:44:55,056 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:44:55,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:55,057 INFO L85 PathProgramCache]: Analyzing trace with hash 858702099, now seen corresponding path program 2 times [2023-11-26 11:44:55,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:55,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088814252] [2023-11-26 11:44:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:55,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088814252] [2023-11-26 11:44:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088814252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:55,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:44:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902320878] [2023-11-26 11:44:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:55,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:44:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:55,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:44:55,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:44:55,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 67 [2023-11-26 11:44:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 110 transitions, 1036 flow. Second operand has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:55,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 67 [2023-11-26 11:44:55,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:00,359 INFO L124 PetriNetUnfolderBase]: 16083/26784 cut-off events. [2023-11-26 11:45:00,359 INFO L125 PetriNetUnfolderBase]: For 115132/120010 co-relation queries the response was YES. [2023-11-26 11:45:00,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102565 conditions, 26784 events. 16083/26784 cut-off events. For 115132/120010 co-relation queries the response was YES. Maximal size of possible extension queue 1573. Compared 226626 event pairs, 3775 based on Foata normal form. 689/24965 useless extension candidates. Maximal degree in co-relation 102524. Up to 8265 conditions per place. [2023-11-26 11:45:00,639 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 106 selfloop transitions, 41 changer transitions 20/201 dead transitions. [2023-11-26 11:45:00,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 201 transitions, 2003 flow [2023-11-26 11:45:00,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:00,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 382 transitions. [2023-11-26 11:45:00,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7126865671641791 [2023-11-26 11:45:00,643 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 382 transitions. [2023-11-26 11:45:00,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 382 transitions. [2023-11-26 11:45:00,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:00,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 382 transitions. [2023-11-26 11:45:00,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 47.75) internal successors, (382), 8 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:00,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:00,648 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 67.0) internal successors, (603), 9 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:00,648 INFO L175 Difference]: Start difference. First operand has 102 places, 110 transitions, 1036 flow. Second operand 8 states and 382 transitions. [2023-11-26 11:45:00,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 201 transitions, 2003 flow [2023-11-26 11:45:01,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 201 transitions, 1931 flow, removed 36 selfloop flow, removed 4 redundant places. [2023-11-26 11:45:01,765 INFO L231 Difference]: Finished difference. Result has 106 places, 118 transitions, 1299 flow [2023-11-26 11:45:01,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1299, PETRI_PLACES=106, PETRI_TRANSITIONS=118} [2023-11-26 11:45:01,767 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2023-11-26 11:45:01,767 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 118 transitions, 1299 flow [2023-11-26 11:45:01,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.285714285714285) internal successors, (247), 7 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:01,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:01,768 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] [2023-11-26 11:45:01,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:45:01,768 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-26 11:45:01,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:01,769 INFO L85 PathProgramCache]: Analyzing trace with hash -984541865, now seen corresponding path program 3 times [2023-11-26 11:45:01,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:01,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196800000] [2023-11-26 11:45:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:02,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:02,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196800000] [2023-11-26 11:45:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196800000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:45:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417848425] [2023-11-26 11:45:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:45:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:45:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:02,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 67 [2023-11-26 11:45:02,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 118 transitions, 1299 flow. Second operand has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:02,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:02,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 67 [2023-11-26 11:45:02,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand