./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/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_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/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_8526136d-25b3-4e1b-853a-9188170eabd2/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 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:44:45,253 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:44:45,346 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-26 11:44:45,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:44:45,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:44:45,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:44:45,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:44:45,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:44:45,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:44:45,382 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:44:45,382 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:44:45,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:44:45,384 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:44:45,384 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:44:45,385 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:44:45,385 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:44:45,386 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:44:45,386 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:44:45,387 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:44:45,387 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:44:45,388 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:44:45,389 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:44:45,389 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-26 11:44:45,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:44:45,390 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:44:45,391 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:44:45,391 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:44:45,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:44:45,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:44:45,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:44:45,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:44:45,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:44:45,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:45,394 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:44:45,394 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:44:45,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:44:45,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:44:45,395 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:44:45,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:44:45,396 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:44:45,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:44:45,396 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_8526136d-25b3-4e1b-853a-9188170eabd2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cac3035eaeb2816ec7d27d980ff4447cc10ff3a409a1a8662d4bf55d93fe6d5 [2023-11-26 11:44:45,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:44:45,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:44:45,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:44:45,761 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:44:45,761 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:44:45,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2023-11-26 11:44:48,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:44:49,250 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:44:49,251 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/sv-benchmarks/c/pthread-wmm/thin002_power.oepc.i [2023-11-26 11:44:49,270 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/data/01e0cdb61/b5ab8323bcd54e6591b66acbc6ff57b7/FLAG3410c4f70 [2023-11-26 11:44:49,285 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/data/01e0cdb61/b5ab8323bcd54e6591b66acbc6ff57b7 [2023-11-26 11:44:49,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:44:49,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:44:49,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:49,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:44:49,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:44:49,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:49" (1/1) ... [2023-11-26 11:44:49,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2397ab52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:49, skipping insertion in model container [2023-11-26 11:44:49,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:44:49" (1/1) ... [2023-11-26 11:44:49,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:44:49,912 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:49,928 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:44:50,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:44:50,120 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:44:50,121 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:44:50,129 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:44:50,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50 WrapperNode [2023-11-26 11:44:50,130 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:44:50,131 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:50,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:44:50,132 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:44:50,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,171 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,240 INFO L138 Inliner]: procedures = 177, calls = 83, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2023-11-26 11:44:50,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:44:50,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:44:50,243 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:44:50,243 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:44:50,256 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,257 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,310 INFO L175 MemorySlicer]: Split 21 memory accesses to 6 slices as follows [2, 15, 1, 1, 1, 1]. 71 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0, 0, 0]. The 9 writes are split as follows [0, 5, 1, 1, 1, 1]. [2023-11-26 11:44:50,311 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,355 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,358 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,364 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:44:50,378 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:44:50,378 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:44:50,378 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:44:50,379 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (1/1) ... [2023-11-26 11:44:50,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:44:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:50,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:44:50,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8526136d-25b3-4e1b-853a-9188170eabd2/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:44:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:44:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:44:50,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:44:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:44:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:44:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:44:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:44:50,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:44:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:44:50,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:44:50,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:44:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:44:50,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-26 11:44:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:44:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:44:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:44:50,465 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-26 11:44:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-26 11:44:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-26 11:44:50,466 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-26 11:44:50,466 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-26 11:44:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-26 11:44:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-26 11:44:50,467 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-26 11:44:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:44:50,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:44:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:44:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:44:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:44:50,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:44:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-26 11:44:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:44:50,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:44:50,472 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 11:44:50,697 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:44:50,699 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:44:51,317 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:44:52,053 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:44:52,053 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:44:52,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:52 BoogieIcfgContainer [2023-11-26 11:44:52,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:44:52,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:44:52,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:44:52,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:44:52,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:44:49" (1/3) ... [2023-11-26 11:44:52,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6088db97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:52, skipping insertion in model container [2023-11-26 11:44:52,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:44:50" (2/3) ... [2023-11-26 11:44:52,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6088db97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:44:52, skipping insertion in model container [2023-11-26 11:44:52,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:44:52" (3/3) ... [2023-11-26 11:44:52,068 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_power.oepc.i [2023-11-26 11:44:52,090 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:44:52,091 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-26 11:44:52,091 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:44:52,237 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-26 11:44:52,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 92 transitions, 200 flow [2023-11-26 11:44:52,373 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-26 11:44:52,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:44:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 284 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-11-26 11:44:52,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 92 transitions, 200 flow [2023-11-26 11:44:52,388 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 88 transitions, 188 flow [2023-11-26 11:44:52,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:44:52,420 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;@61e1af64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:44:52,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-26 11:44:52,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:44:52,425 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-26 11:44:52,425 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-26 11:44:52,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:52,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:44:52,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:44:52,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:52,433 INFO L85 PathProgramCache]: Analyzing trace with hash 24774, now seen corresponding path program 1 times [2023-11-26 11:44:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010772981] [2023-11-26 11:44:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:52,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:52,882 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 11:44:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:52,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010772981] [2023-11-26 11:44:52,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010772981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:52,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:44:52,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434740250] [2023-11-26 11:44:52,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:52,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:52,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:44:52,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:52,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:52,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:44:52,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:56,299 INFO L124 PetriNetUnfolderBase]: 8007/12244 cut-off events. [2023-11-26 11:44:56,300 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-26 11:44:56,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23401 conditions, 12244 events. 8007/12244 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 97885 event pairs, 6927 based on Foata normal form. 400/8179 useless extension candidates. Maximal degree in co-relation 23386. Up to 9599 conditions per place. [2023-11-26 11:44:56,466 INFO L140 encePairwiseOnDemand]: 73/92 looper letters, 51 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-26 11:44:56,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 85 transitions, 288 flow [2023-11-26 11:44:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2023-11-26 11:44:56,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2023-11-26 11:44:56,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 192 transitions. [2023-11-26 11:44:56,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 192 transitions. [2023-11-26 11:44:56,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:56,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 192 transitions. [2023-11-26 11:44:56,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 11:44:56,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:44:56,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:44:56,501 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 188 flow. Second operand 3 states and 192 transitions. [2023-11-26 11:44:56,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 85 transitions, 288 flow [2023-11-26 11:44:56,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 85 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-26 11:44:56,514 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 152 flow [2023-11-26 11:44:56,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2023-11-26 11:44:56,521 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -18 predicate places. [2023-11-26 11:44:56,521 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 152 flow [2023-11-26 11:44:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:56,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:56,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-26 11:44:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:44:56,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:44:56,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 24775, now seen corresponding path program 1 times [2023-11-26 11:44:56,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995566835] [2023-11-26 11:44:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:56,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:44:56,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995566835] [2023-11-26 11:44:56,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995566835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:56,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:56,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:44:56,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235298367] [2023-11-26 11:44:56,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:56,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:44:56,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:56,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:44:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:44:56,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:44:56,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:56,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:44:56,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:44:56,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:44:59,590 INFO L124 PetriNetUnfolderBase]: 8007/12243 cut-off events. [2023-11-26 11:44:59,590 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-11-26 11:44:59,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23597 conditions, 12243 events. 8007/12243 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 97981 event pairs, 6927 based on Foata normal form. 1/7779 useless extension candidates. Maximal degree in co-relation 23586. Up to 9598 conditions per place. [2023-11-26 11:44:59,727 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 50 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-26 11:44:59,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 284 flow [2023-11-26 11:44:59,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:44:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:44:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2023-11-26 11:44:59,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2023-11-26 11:44:59,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 164 transitions. [2023-11-26 11:44:59,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 164 transitions. [2023-11-26 11:44:59,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:44:59,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 164 transitions. [2023-11-26 11:44:59,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 11:44:59,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:44:59,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:44:59,748 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 152 flow. Second operand 3 states and 164 transitions. [2023-11-26 11:44:59,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 84 transitions, 284 flow [2023-11-26 11:44:59,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 280 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:44:59,782 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 150 flow [2023-11-26 11:44:59,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2023-11-26 11:44:59,783 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -19 predicate places. [2023-11-26 11:44:59,783 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 150 flow [2023-11-26 11:44:59,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:44:59,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:44:59,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:44:59,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:44:59,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:44:59,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:44:59,786 INFO L85 PathProgramCache]: Analyzing trace with hash 738834137, now seen corresponding path program 1 times [2023-11-26 11:44:59,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:44:59,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308330443] [2023-11-26 11:44:59,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:59,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:59,963 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 11:44:59,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:59,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308330443] [2023-11-26 11:44:59,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308330443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:44:59,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:44:59,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:44:59,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442283122] [2023-11-26 11:44:59,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:44:59,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:44:59,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:44:59,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:44:59,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:00,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:00,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:45:00,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:00,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:00,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:01,991 INFO L124 PetriNetUnfolderBase]: 4667/7521 cut-off events. [2023-11-26 11:45:01,992 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-26 11:45:02,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14332 conditions, 7521 events. 4667/7521 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 60129 event pairs, 3295 based on Foata normal form. 0/5529 useless extension candidates. Maximal degree in co-relation 14320. Up to 4473 conditions per place. [2023-11-26 11:45:02,078 INFO L140 encePairwiseOnDemand]: 81/92 looper letters, 54 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-26 11:45:02,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 310 flow [2023-11-26 11:45:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:02,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:02,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2023-11-26 11:45:02,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896739130434783 [2023-11-26 11:45:02,083 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 217 transitions. [2023-11-26 11:45:02,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 217 transitions. [2023-11-26 11:45:02,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:02,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 217 transitions. [2023-11-26 11:45:02,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 11:45:02,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:02,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:02,090 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 150 flow. Second operand 4 states and 217 transitions. [2023-11-26 11:45:02,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 310 flow [2023-11-26 11:45:02,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 90 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:02,108 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 190 flow [2023-11-26 11:45:02,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2023-11-26 11:45:02,110 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2023-11-26 11:45:02,111 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 190 flow [2023-11-26 11:45:02,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:45:02,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:02,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:02,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:45:02,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:02,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash 738834138, now seen corresponding path program 1 times [2023-11-26 11:45:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:02,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344431875] [2023-11-26 11:45:02,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:02,301 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 11:45:02,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:02,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344431875] [2023-11-26 11:45:02,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344431875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:02,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:02,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:02,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705044300] [2023-11-26 11:45:02,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:02,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:02,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:02,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:02,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2023-11-26 11:45:02,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 190 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 11:45:02,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:02,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2023-11-26 11:45:02,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:03,209 INFO L124 PetriNetUnfolderBase]: 1815/3191 cut-off events. [2023-11-26 11:45:03,209 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2023-11-26 11:45:03,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7002 conditions, 3191 events. 1815/3191 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24196 event pairs, 1223 based on Foata normal form. 554/3522 useless extension candidates. Maximal degree in co-relation 6988. Up to 1530 conditions per place. [2023-11-26 11:45:03,245 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-26 11:45:03,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 276 flow [2023-11-26 11:45:03,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:03,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:03,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 198 transitions. [2023-11-26 11:45:03,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380434782608695 [2023-11-26 11:45:03,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 198 transitions. [2023-11-26 11:45:03,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 198 transitions. [2023-11-26 11:45:03,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:03,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 198 transitions. [2023-11-26 11:45:03,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 11:45:03,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:03,251 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:03,251 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 190 flow. Second operand 4 states and 198 transitions. [2023-11-26 11:45:03,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 276 flow [2023-11-26 11:45:03,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-26 11:45:03,257 INFO L231 Difference]: Finished difference. Result has 78 places, 64 transitions, 180 flow [2023-11-26 11:45:03,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=78, PETRI_TRANSITIONS=64} [2023-11-26 11:45:03,259 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -21 predicate places. [2023-11-26 11:45:03,259 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 64 transitions, 180 flow [2023-11-26 11:45:03,259 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 11:45:03,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:03,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:03,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:45:03,261 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:03,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:03,265 INFO L85 PathProgramCache]: Analyzing trace with hash 738832084, now seen corresponding path program 1 times [2023-11-26 11:45:03,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:03,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147027903] [2023-11-26 11:45:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:03,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:03,332 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 11:45:03,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:03,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147027903] [2023-11-26 11:45:03,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147027903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:03,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:03,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:03,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111246227] [2023-11-26 11:45:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:03,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:03,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:03,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 64 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:03,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:03,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:03,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:04,239 INFO L124 PetriNetUnfolderBase]: 1817/3189 cut-off events. [2023-11-26 11:45:04,239 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2023-11-26 11:45:04,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7055 conditions, 3189 events. 1817/3189 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24287 event pairs, 1090 based on Foata normal form. 0/2972 useless extension candidates. Maximal degree in co-relation 7040. Up to 1531 conditions per place. [2023-11-26 11:45:04,276 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 38 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-26 11:45:04,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 278 flow [2023-11-26 11:45:04,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:45:04,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2023-11-26 11:45:04,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:45:04,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:45:04,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:04,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:45:04,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:04,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:04,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:04,282 INFO L175 Difference]: Start difference. First operand has 78 places, 64 transitions, 180 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:45:04,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 278 flow [2023-11-26 11:45:04,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 275 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:04,287 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 179 flow [2023-11-26 11:45:04,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2023-11-26 11:45:04,288 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -22 predicate places. [2023-11-26 11:45:04,288 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 179 flow [2023-11-26 11:45:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:04,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:04,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:45:04,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:45:04,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:04,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:04,290 INFO L85 PathProgramCache]: Analyzing trace with hash 738832085, now seen corresponding path program 1 times [2023-11-26 11:45:04,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:04,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411770724] [2023-11-26 11:45:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:04,390 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 11:45:04,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:04,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411770724] [2023-11-26 11:45:04,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411770724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:04,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:04,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595463937] [2023-11-26 11:45:04,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:04,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:04,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:04,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 11:45:04,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:04,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:04,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:05,180 INFO L124 PetriNetUnfolderBase]: 1815/3166 cut-off events. [2023-11-26 11:45:05,180 INFO L125 PetriNetUnfolderBase]: For 960/960 co-relation queries the response was YES. [2023-11-26 11:45:05,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7076 conditions, 3166 events. 1815/3166 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24422 event pairs, 1285 based on Foata normal form. 3/2955 useless extension candidates. Maximal degree in co-relation 7062. Up to 1526 conditions per place. [2023-11-26 11:45:05,209 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-26 11:45:05,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 69 transitions, 275 flow [2023-11-26 11:45:05,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-26 11:45:05,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2023-11-26 11:45:05,212 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-26 11:45:05,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-26 11:45:05,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:05,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-26 11:45:05,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:45:05,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:05,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:05,215 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 179 flow. Second operand 3 states and 148 transitions. [2023-11-26 11:45:05,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 69 transitions, 275 flow [2023-11-26 11:45:05,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:05,220 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 177 flow [2023-11-26 11:45:05,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2023-11-26 11:45:05,221 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -23 predicate places. [2023-11-26 11:45:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 177 flow [2023-11-26 11:45:05,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states 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 11:45:05,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:05,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:45:05,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1159982696, now seen corresponding path program 1 times [2023-11-26 11:45:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:05,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461292169] [2023-11-26 11:45:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:05,285 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 11:45:05,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461292169] [2023-11-26 11:45:05,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461292169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:05,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:05,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:05,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034520488] [2023-11-26 11:45:05,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:05,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:05,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:05,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:05,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:05,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:06,079 INFO L124 PetriNetUnfolderBase]: 1822/3183 cut-off events. [2023-11-26 11:45:06,079 INFO L125 PetriNetUnfolderBase]: For 930/930 co-relation queries the response was YES. [2023-11-26 11:45:06,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7108 conditions, 3183 events. 1822/3183 cut-off events. For 930/930 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24426 event pairs, 1019 based on Foata normal form. 0/2977 useless extension candidates. Maximal degree in co-relation 7094. Up to 1524 conditions per place. [2023-11-26 11:45:06,109 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 38 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-26 11:45:06,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 275 flow [2023-11-26 11:45:06,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:06,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:45:06,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2023-11-26 11:45:06,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:45:06,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:45:06,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:06,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:45:06,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:06,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:06,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:06,114 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 177 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:45:06,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 68 transitions, 275 flow [2023-11-26 11:45:06,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:06,117 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 175 flow [2023-11-26 11:45:06,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-11-26 11:45:06,119 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -24 predicate places. [2023-11-26 11:45:06,119 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 175 flow [2023-11-26 11:45:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:06,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:06,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:06,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:45:06,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:06,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1159982695, now seen corresponding path program 1 times [2023-11-26 11:45:06,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:06,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052298285] [2023-11-26 11:45:06,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:06,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:06,194 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 11:45:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:06,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052298285] [2023-11-26 11:45:06,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052298285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:06,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:06,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:06,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052072506] [2023-11-26 11:45:06,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:06,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:06,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:06,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:06,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 11:45:06,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:06,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:06,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:06,911 INFO L124 PetriNetUnfolderBase]: 1815/3170 cut-off events. [2023-11-26 11:45:06,911 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2023-11-26 11:45:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7083 conditions, 3170 events. 1815/3170 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24278 event pairs, 1016 based on Foata normal form. 6/2973 useless extension candidates. Maximal degree in co-relation 7069. Up to 1511 conditions per place. [2023-11-26 11:45:06,935 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-26 11:45:06,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 67 transitions, 271 flow [2023-11-26 11:45:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-26 11:45:06,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2023-11-26 11:45:06,937 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-26 11:45:06,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-26 11:45:06,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:06,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-26 11:45:06,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:45:06,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:06,942 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:06,942 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 175 flow. Second operand 3 states and 148 transitions. [2023-11-26 11:45:06,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 67 transitions, 271 flow [2023-11-26 11:45:06,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:06,947 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 173 flow [2023-11-26 11:45:06,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2023-11-26 11:45:06,951 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -25 predicate places. [2023-11-26 11:45:06,952 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 173 flow [2023-11-26 11:45:06,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 11:45:06,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:06,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:06,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:45:06,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:06,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash 263159514, now seen corresponding path program 1 times [2023-11-26 11:45:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449477780] [2023-11-26 11:45:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,069 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 11:45:07,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:07,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449477780] [2023-11-26 11:45:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449477780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088083986] [2023-11-26 11:45:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:07,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:07,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 173 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 11:45:07,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:07,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:07,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:07,632 INFO L124 PetriNetUnfolderBase]: 1815/3143 cut-off events. [2023-11-26 11:45:07,632 INFO L125 PetriNetUnfolderBase]: For 929/929 co-relation queries the response was YES. [2023-11-26 11:45:07,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7056 conditions, 3143 events. 1815/3143 cut-off events. For 929/929 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 24281 event pairs, 1022 based on Foata normal form. 12/2985 useless extension candidates. Maximal degree in co-relation 7042. Up to 1472 conditions per place. [2023-11-26 11:45:07,662 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 37 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-11-26 11:45:07,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 66 transitions, 269 flow [2023-11-26 11:45:07,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2023-11-26 11:45:07,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2023-11-26 11:45:07,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 148 transitions. [2023-11-26 11:45:07,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 148 transitions. [2023-11-26 11:45:07,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:07,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 148 transitions. [2023-11-26 11:45:07,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:45:07,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:07,667 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:07,667 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 173 flow. Second operand 3 states and 148 transitions. [2023-11-26 11:45:07,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 66 transitions, 269 flow [2023-11-26 11:45:07,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 66 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:07,671 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 171 flow [2023-11-26 11:45:07,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=171, PETRI_PLACES=73, PETRI_TRANSITIONS=59} [2023-11-26 11:45:07,672 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -26 predicate places. [2023-11-26 11:45:07,672 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 171 flow [2023-11-26 11:45:07,673 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 11:45:07,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:07,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:07,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:45:07,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:07,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash 263159513, now seen corresponding path program 1 times [2023-11-26 11:45:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997638291] [2023-11-26 11:45:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:07,728 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 11:45:07,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:07,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997638291] [2023-11-26 11:45:07,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997638291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:07,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:07,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:45:07,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809109932] [2023-11-26 11:45:07,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:07,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:07,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:07,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 59 transitions, 171 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 11:45:07,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:07,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:08,461 INFO L124 PetriNetUnfolderBase]: 1835/3169 cut-off events. [2023-11-26 11:45:08,461 INFO L125 PetriNetUnfolderBase]: For 936/936 co-relation queries the response was YES. [2023-11-26 11:45:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7124 conditions, 3169 events. 1835/3169 cut-off events. For 936/936 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 24147 event pairs, 1001 based on Foata normal form. 0/2987 useless extension candidates. Maximal degree in co-relation 7110. Up to 1504 conditions per place. [2023-11-26 11:45:08,482 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 38 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-26 11:45:08,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 269 flow [2023-11-26 11:45:08,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:08,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:08,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2023-11-26 11:45:08,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289855072463768 [2023-11-26 11:45:08,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 146 transitions. [2023-11-26 11:45:08,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 146 transitions. [2023-11-26 11:45:08,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:08,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 146 transitions. [2023-11-26 11:45:08,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:08,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:08,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:08,486 INFO L175 Difference]: Start difference. First operand has 73 places, 59 transitions, 171 flow. Second operand 3 states and 146 transitions. [2023-11-26 11:45:08,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 65 transitions, 269 flow [2023-11-26 11:45:08,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:08,490 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 169 flow [2023-11-26 11:45:08,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=169, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-26 11:45:08,491 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -27 predicate places. [2023-11-26 11:45:08,491 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 169 flow [2023-11-26 11:45:08,491 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 11:45:08,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:08,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:08,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:45:08,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:08,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 15812093, now seen corresponding path program 1 times [2023-11-26 11:45:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408962410] [2023-11-26 11:45:08,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:08,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:08,608 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 11:45:08,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:08,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408962410] [2023-11-26 11:45:08,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408962410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:08,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:08,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 11:45:08,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120636287] [2023-11-26 11:45:08,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:08,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:45:08,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:45:08,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:45:08,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2023-11-26 11:45:08,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 11:45:08,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:08,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2023-11-26 11:45:08,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:09,217 INFO L124 PetriNetUnfolderBase]: 1727/2859 cut-off events. [2023-11-26 11:45:09,218 INFO L125 PetriNetUnfolderBase]: For 813/816 co-relation queries the response was YES. [2023-11-26 11:45:09,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6610 conditions, 2859 events. 1727/2859 cut-off events. For 813/816 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 19935 event pairs, 1220 based on Foata normal form. 0/2738 useless extension candidates. Maximal degree in co-relation 6596. Up to 1797 conditions per place. [2023-11-26 11:45:09,238 INFO L140 encePairwiseOnDemand]: 88/92 looper letters, 53 selfloop transitions, 3 changer transitions 0/82 dead transitions. [2023-11-26 11:45:09,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 82 transitions, 367 flow [2023-11-26 11:45:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:45:09,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-26 11:45:09,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-11-26 11:45:09,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.605072463768116 [2023-11-26 11:45:09,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-11-26 11:45:09,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-11-26 11:45:09,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:09,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-11-26 11:45:09,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 11:45:09,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:09,242 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 92.0) internal successors, (368), 4 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 11:45:09,242 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 169 flow. Second operand 3 states and 167 transitions. [2023-11-26 11:45:09,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 82 transitions, 367 flow [2023-11-26 11:45:09,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 82 transitions, 359 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:09,247 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 178 flow [2023-11-26 11:45:09,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-11-26 11:45:09,248 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -26 predicate places. [2023-11-26 11:45:09,248 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 178 flow [2023-11-26 11:45:09,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 11:45:09,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:09,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:09,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:45:09,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:09,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1984375220, now seen corresponding path program 1 times [2023-11-26 11:45:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:09,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739032592] [2023-11-26 11:45:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:09,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:09,364 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 11:45:09,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739032592] [2023-11-26 11:45:09,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739032592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:09,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:09,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473479202] [2023-11-26 11:45:09,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:09,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:09,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:09,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2023-11-26 11:45:09,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 11:45:09,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:09,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2023-11-26 11:45:09,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:09,976 INFO L124 PetriNetUnfolderBase]: 1735/3304 cut-off events. [2023-11-26 11:45:09,976 INFO L125 PetriNetUnfolderBase]: For 1106/1118 co-relation queries the response was YES. [2023-11-26 11:45:09,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7465 conditions, 3304 events. 1735/3304 cut-off events. For 1106/1118 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 27132 event pairs, 391 based on Foata normal form. 0/3232 useless extension candidates. Maximal degree in co-relation 7449. Up to 1340 conditions per place. [2023-11-26 11:45:10,005 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 49 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2023-11-26 11:45:10,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 350 flow [2023-11-26 11:45:10,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 209 transitions. [2023-11-26 11:45:10,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679347826086957 [2023-11-26 11:45:10,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 209 transitions. [2023-11-26 11:45:10,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 209 transitions. [2023-11-26 11:45:10,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:10,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 209 transitions. [2023-11-26 11:45:10,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 11:45:10,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:10,009 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:10,010 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 178 flow. Second operand 4 states and 209 transitions. [2023-11-26 11:45:10,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 350 flow [2023-11-26 11:45:10,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 82 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:10,012 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 188 flow [2023-11-26 11:45:10,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-11-26 11:45:10,013 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -26 predicate places. [2023-11-26 11:45:10,013 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 188 flow [2023-11-26 11:45:10,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 11:45:10,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:10,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:10,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:45:10,014 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:10,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,015 INFO L85 PathProgramCache]: Analyzing trace with hash 479861985, now seen corresponding path program 1 times [2023-11-26 11:45:10,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029081136] [2023-11-26 11:45:10,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:10,306 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 11:45:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029081136] [2023-11-26 11:45:10,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029081136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:10,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369559751] [2023-11-26 11:45:10,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:10,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:10,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:10,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:10,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 92 [2023-11-26 11:45:10,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:10,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:10,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 92 [2023-11-26 11:45:10,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:10,905 INFO L124 PetriNetUnfolderBase]: 1663/2791 cut-off events. [2023-11-26 11:45:10,905 INFO L125 PetriNetUnfolderBase]: For 1277/1280 co-relation queries the response was YES. [2023-11-26 11:45:10,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6912 conditions, 2791 events. 1663/2791 cut-off events. For 1277/1280 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 19353 event pairs, 1128 based on Foata normal form. 32/2768 useless extension candidates. Maximal degree in co-relation 6896. Up to 1716 conditions per place. [2023-11-26 11:45:10,921 INFO L140 encePairwiseOnDemand]: 89/92 looper letters, 51 selfloop transitions, 3 changer transitions 0/80 dead transitions. [2023-11-26 11:45:10,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 372 flow [2023-11-26 11:45:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:10,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:10,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 202 transitions. [2023-11-26 11:45:10,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5489130434782609 [2023-11-26 11:45:10,923 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 202 transitions. [2023-11-26 11:45:10,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 202 transitions. [2023-11-26 11:45:10,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:10,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 202 transitions. [2023-11-26 11:45:10,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 11:45:10,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:10,926 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:10,926 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 188 flow. Second operand 4 states and 202 transitions. [2023-11-26 11:45:10,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 372 flow [2023-11-26 11:45:10,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 361 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:10,930 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 181 flow [2023-11-26 11:45:10,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2023-11-26 11:45:10,931 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -26 predicate places. [2023-11-26 11:45:10,931 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 181 flow [2023-11-26 11:45:10,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:10,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:10,932 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 11:45:10,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:45:10,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:10,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash -64212808, now seen corresponding path program 1 times [2023-11-26 11:45:10,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:10,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71196041] [2023-11-26 11:45:10,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:12,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:12,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71196041] [2023-11-26 11:45:12,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71196041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:12,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:12,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:45:12,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100377502] [2023-11-26 11:45:12,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:12,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:12,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:12,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:12,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:12,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 92 [2023-11-26 11:45:12,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 181 flow. Second operand has 10 states, 10 states have (on average 33.7) internal successors, (337), 10 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 11:45:12,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:12,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 92 [2023-11-26 11:45:12,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:13,263 INFO L124 PetriNetUnfolderBase]: 2556/4322 cut-off events. [2023-11-26 11:45:13,263 INFO L125 PetriNetUnfolderBase]: For 1879/1882 co-relation queries the response was YES. [2023-11-26 11:45:13,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10130 conditions, 4322 events. 2556/4322 cut-off events. For 1879/1882 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 33553 event pairs, 1329 based on Foata normal form. 0/4142 useless extension candidates. Maximal degree in co-relation 10114. Up to 1352 conditions per place. [2023-11-26 11:45:13,289 INFO L140 encePairwiseOnDemand]: 84/92 looper letters, 73 selfloop transitions, 11 changer transitions 2/109 dead transitions. [2023-11-26 11:45:13,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 109 transitions, 528 flow [2023-11-26 11:45:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 338 transitions. [2023-11-26 11:45:13,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2023-11-26 11:45:13,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 338 transitions. [2023-11-26 11:45:13,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 338 transitions. [2023-11-26 11:45:13,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:13,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 338 transitions. [2023-11-26 11:45:13,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 42.25) internal successors, (338), 8 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 11:45:13,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:13,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:13,296 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 181 flow. Second operand 8 states and 338 transitions. [2023-11-26 11:45:13,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 109 transitions, 528 flow [2023-11-26 11:45:13,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 109 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:13,300 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 266 flow [2023-11-26 11:45:13,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=266, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2023-11-26 11:45:13,301 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -15 predicate places. [2023-11-26 11:45:13,301 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 266 flow [2023-11-26 11:45:13,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.7) internal successors, (337), 10 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 11:45:13,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:13,302 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 11:45:13,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:45:13,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:13,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash -64213690, now seen corresponding path program 1 times [2023-11-26 11:45:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526351234] [2023-11-26 11:45:13,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:13,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:13,550 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 11:45:13,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:13,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526351234] [2023-11-26 11:45:13,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526351234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:13,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:13,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:13,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115667330] [2023-11-26 11:45:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:13,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:13,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:13,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:13,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:13,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:13,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 266 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 11:45:13,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:13,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:13,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:15,079 INFO L124 PetriNetUnfolderBase]: 5479/9968 cut-off events. [2023-11-26 11:45:15,079 INFO L125 PetriNetUnfolderBase]: For 6713/6875 co-relation queries the response was YES. [2023-11-26 11:45:15,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23765 conditions, 9968 events. 5479/9968 cut-off events. For 6713/6875 co-relation queries the response was YES. Maximal size of possible extension queue 953. Compared 93187 event pairs, 991 based on Foata normal form. 0/9608 useless extension candidates. Maximal degree in co-relation 23743. Up to 3601 conditions per place. [2023-11-26 11:45:15,147 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 101 selfloop transitions, 17 changer transitions 0/142 dead transitions. [2023-11-26 11:45:15,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 142 transitions, 868 flow [2023-11-26 11:45:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 382 transitions. [2023-11-26 11:45:15,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5190217391304348 [2023-11-26 11:45:15,150 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 382 transitions. [2023-11-26 11:45:15,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 382 transitions. [2023-11-26 11:45:15,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:15,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 382 transitions. [2023-11-26 11:45:15,152 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 11:45:15,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:15,155 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:15,155 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 266 flow. Second operand 8 states and 382 transitions. [2023-11-26 11:45:15,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 142 transitions, 868 flow [2023-11-26 11:45:15,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 142 transitions, 839 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-26 11:45:15,173 INFO L231 Difference]: Finished difference. Result has 94 places, 77 transitions, 385 flow [2023-11-26 11:45:15,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=94, PETRI_TRANSITIONS=77} [2023-11-26 11:45:15,174 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-11-26 11:45:15,174 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 77 transitions, 385 flow [2023-11-26 11:45:15,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 11:45:15,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:15,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:45:15,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:15,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:15,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1990595862, now seen corresponding path program 1 times [2023-11-26 11:45:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28329892] [2023-11-26 11:45:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:15,646 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 11:45:15,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:15,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28329892] [2023-11-26 11:45:15,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28329892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:15,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:15,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:45:15,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737963631] [2023-11-26 11:45:15,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:15,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:15,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:15,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:15,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:15,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:15,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 77 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 37.875) internal successors, (303), 8 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 11:45:15,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:15,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:15,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:16,698 INFO L124 PetriNetUnfolderBase]: 2939/5488 cut-off events. [2023-11-26 11:45:16,698 INFO L125 PetriNetUnfolderBase]: For 4791/4847 co-relation queries the response was YES. [2023-11-26 11:45:16,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14126 conditions, 5488 events. 2939/5488 cut-off events. For 4791/4847 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 48644 event pairs, 1192 based on Foata normal form. 194/5494 useless extension candidates. Maximal degree in co-relation 14099. Up to 2396 conditions per place. [2023-11-26 11:45:16,737 INFO L140 encePairwiseOnDemand]: 83/92 looper letters, 36 selfloop transitions, 10 changer transitions 10/85 dead transitions. [2023-11-26 11:45:16,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 85 transitions, 501 flow [2023-11-26 11:45:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:45:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 295 transitions. [2023-11-26 11:45:16,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4580745341614907 [2023-11-26 11:45:16,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 295 transitions. [2023-11-26 11:45:16,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 295 transitions. [2023-11-26 11:45:16,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:16,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 295 transitions. [2023-11-26 11:45:16,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 42.142857142857146) internal successors, (295), 7 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 11:45:16,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:16,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:16,744 INFO L175 Difference]: Start difference. First operand has 94 places, 77 transitions, 385 flow. Second operand 7 states and 295 transitions. [2023-11-26 11:45:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 85 transitions, 501 flow [2023-11-26 11:45:16,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 85 transitions, 488 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:16,793 INFO L231 Difference]: Finished difference. Result has 94 places, 64 transitions, 279 flow [2023-11-26 11:45:16,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=279, PETRI_PLACES=94, PETRI_TRANSITIONS=64} [2023-11-26 11:45:16,794 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2023-11-26 11:45:16,794 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 64 transitions, 279 flow [2023-11-26 11:45:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 37.875) internal successors, (303), 8 states have internal predecessors, (303), 0 states have call successors, (0), 0 states 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 11:45:16,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:16,795 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 11:45:16,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:45:16,795 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:16,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:16,795 INFO L85 PathProgramCache]: Analyzing trace with hash 253410887, now seen corresponding path program 1 times [2023-11-26 11:45:16,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:16,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130351431] [2023-11-26 11:45:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:16,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:17,898 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 11:45:17,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130351431] [2023-11-26 11:45:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130351431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 11:45:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746847261] [2023-11-26 11:45:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:17,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:45:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:45:17,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:45:18,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 92 [2023-11-26 11:45:18,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 64 transitions, 279 flow. Second operand has 10 states, 10 states have (on average 33.8) internal successors, (338), 10 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 11:45:18,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:18,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 92 [2023-11-26 11:45:18,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:19,165 INFO L124 PetriNetUnfolderBase]: 1911/3716 cut-off events. [2023-11-26 11:45:19,165 INFO L125 PetriNetUnfolderBase]: For 2719/2733 co-relation queries the response was YES. [2023-11-26 11:45:19,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9060 conditions, 3716 events. 1911/3716 cut-off events. For 2719/2733 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 31849 event pairs, 774 based on Foata normal form. 114/3743 useless extension candidates. Maximal degree in co-relation 9046. Up to 2396 conditions per place. [2023-11-26 11:45:19,192 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 30 selfloop transitions, 9 changer transitions 16/78 dead transitions. [2023-11-26 11:45:19,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 78 transitions, 417 flow [2023-11-26 11:45:19,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:19,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2023-11-26 11:45:19,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4076086956521739 [2023-11-26 11:45:19,194 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 300 transitions. [2023-11-26 11:45:19,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 300 transitions. [2023-11-26 11:45:19,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:19,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 300 transitions. [2023-11-26 11:45:19,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 37.5) internal successors, (300), 8 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 11:45:19,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:19,199 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:19,199 INFO L175 Difference]: Start difference. First operand has 94 places, 64 transitions, 279 flow. Second operand 8 states and 300 transitions. [2023-11-26 11:45:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 78 transitions, 417 flow [2023-11-26 11:45:19,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 390 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-26 11:45:19,221 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 197 flow [2023-11-26 11:45:19,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2023-11-26 11:45:19,222 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -8 predicate places. [2023-11-26 11:45:19,222 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 197 flow [2023-11-26 11:45:19,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.8) internal successors, (338), 10 states have internal predecessors, (338), 0 states have call successors, (0), 0 states 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 11:45:19,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:19,223 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 11:45:19,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:45:19,223 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1618851591, now seen corresponding path program 1 times [2023-11-26 11:45:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590709431] [2023-11-26 11:45:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:19,544 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 11:45:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590709431] [2023-11-26 11:45:19,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590709431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:19,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:19,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:19,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840983875] [2023-11-26 11:45:19,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:19,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:19,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:19,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:19,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:19,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:19,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 11:45:19,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:19,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:19,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:20,530 INFO L124 PetriNetUnfolderBase]: 2328/3801 cut-off events. [2023-11-26 11:45:20,530 INFO L125 PetriNetUnfolderBase]: For 1770/1772 co-relation queries the response was YES. [2023-11-26 11:45:20,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 3801 events. 2328/3801 cut-off events. For 1770/1772 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 28561 event pairs, 354 based on Foata normal form. 100/3865 useless extension candidates. Maximal degree in co-relation 9449. Up to 1877 conditions per place. [2023-11-26 11:45:20,555 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 34 selfloop transitions, 2 changer transitions 37/96 dead transitions. [2023-11-26 11:45:20,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 495 flow [2023-11-26 11:45:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:20,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 356 transitions. [2023-11-26 11:45:20,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.483695652173913 [2023-11-26 11:45:20,558 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 356 transitions. [2023-11-26 11:45:20,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 356 transitions. [2023-11-26 11:45:20,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:20,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 356 transitions. [2023-11-26 11:45:20,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.5) internal successors, (356), 8 states have internal predecessors, (356), 0 states have call successors, (0), 0 states 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 11:45:20,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:20,563 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:20,563 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 197 flow. Second operand 8 states and 356 transitions. [2023-11-26 11:45:20,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 495 flow [2023-11-26 11:45:20,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 454 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-11-26 11:45:20,587 INFO L231 Difference]: Finished difference. Result has 84 places, 52 transitions, 183 flow [2023-11-26 11:45:20,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=8, PETRI_FLOW=183, PETRI_PLACES=84, PETRI_TRANSITIONS=52} [2023-11-26 11:45:20,588 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -15 predicate places. [2023-11-26 11:45:20,589 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 52 transitions, 183 flow [2023-11-26 11:45:20,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.8) internal successors, (194), 5 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 11:45:20,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:20,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:20,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:45:20,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:20,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash 58810244, now seen corresponding path program 1 times [2023-11-26 11:45:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:20,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925762099] [2023-11-26 11:45:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:20,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:20,906 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 11:45:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925762099] [2023-11-26 11:45:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925762099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:20,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:20,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497423715] [2023-11-26 11:45:20,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:20,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 92 [2023-11-26 11:45:20,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 52 transitions, 183 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 11:45:20,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:20,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 92 [2023-11-26 11:45:20,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:21,952 INFO L124 PetriNetUnfolderBase]: 2299/4049 cut-off events. [2023-11-26 11:45:21,952 INFO L125 PetriNetUnfolderBase]: For 2030/2039 co-relation queries the response was YES. [2023-11-26 11:45:21,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9689 conditions, 4049 events. 2299/4049 cut-off events. For 2030/2039 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29423 event pairs, 968 based on Foata normal form. 120/4121 useless extension candidates. Maximal degree in co-relation 9676. Up to 2099 conditions per place. [2023-11-26 11:45:21,979 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 45 selfloop transitions, 2 changer transitions 31/101 dead transitions. [2023-11-26 11:45:21,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 101 transitions, 529 flow [2023-11-26 11:45:21,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:21,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:45:21,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 320 transitions. [2023-11-26 11:45:21,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968944099378882 [2023-11-26 11:45:21,982 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 320 transitions. [2023-11-26 11:45:21,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 320 transitions. [2023-11-26 11:45:21,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:21,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 320 transitions. [2023-11-26 11:45:21,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 45.714285714285715) internal successors, (320), 7 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 11:45:21,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:21,986 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:21,987 INFO L175 Difference]: Start difference. First operand has 84 places, 52 transitions, 183 flow. Second operand 7 states and 320 transitions. [2023-11-26 11:45:21,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 101 transitions, 529 flow [2023-11-26 11:45:22,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 101 transitions, 509 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 11:45:22,005 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 187 flow [2023-11-26 11:45:22,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=7, PETRI_FLOW=187, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2023-11-26 11:45:22,006 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2023-11-26 11:45:22,006 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 187 flow [2023-11-26 11:45:22,006 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 11:45:22,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:22,007 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 11:45:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:45:22,007 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:22,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2053881517, now seen corresponding path program 1 times [2023-11-26 11:45:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672112765] [2023-11-26 11:45:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:22,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:22,403 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 11:45:22,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:22,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672112765] [2023-11-26 11:45:22,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672112765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:22,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:22,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:22,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725440275] [2023-11-26 11:45:22,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:22,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:22,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:22,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:22,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:22,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:22,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 11:45:22,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:22,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:22,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:23,211 INFO L124 PetriNetUnfolderBase]: 1380/2637 cut-off events. [2023-11-26 11:45:23,211 INFO L125 PetriNetUnfolderBase]: For 1237/1251 co-relation queries the response was YES. [2023-11-26 11:45:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6159 conditions, 2637 events. 1380/2637 cut-off events. For 1237/1251 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19940 event pairs, 540 based on Foata normal form. 48/2634 useless extension candidates. Maximal degree in co-relation 6145. Up to 1564 conditions per place. [2023-11-26 11:45:23,230 INFO L140 encePairwiseOnDemand]: 87/92 looper letters, 34 selfloop transitions, 5 changer transitions 27/90 dead transitions. [2023-11-26 11:45:23,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 90 transitions, 447 flow [2023-11-26 11:45:23,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:45:23,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-26 11:45:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 323 transitions. [2023-11-26 11:45:23,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015527950310559 [2023-11-26 11:45:23,232 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 323 transitions. [2023-11-26 11:45:23,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 323 transitions. [2023-11-26 11:45:23,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:23,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 323 transitions. [2023-11-26 11:45:23,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 11:45:23,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:23,237 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states 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 11:45:23,237 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 187 flow. Second operand 7 states and 323 transitions. [2023-11-26 11:45:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 90 transitions, 447 flow [2023-11-26 11:45:23,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 427 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 11:45:23,252 INFO L231 Difference]: Finished difference. Result has 83 places, 52 transitions, 200 flow [2023-11-26 11:45:23,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=83, PETRI_TRANSITIONS=52} [2023-11-26 11:45:23,252 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -16 predicate places. [2023-11-26 11:45:23,252 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 52 transitions, 200 flow [2023-11-26 11:45:23,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 11:45:23,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:23,253 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] [2023-11-26 11:45:23,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 11:45:23,254 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:23,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1520730546, now seen corresponding path program 1 times [2023-11-26 11:45:23,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:23,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517680865] [2023-11-26 11:45:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:23,548 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 11:45:23,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:23,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517680865] [2023-11-26 11:45:23,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517680865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:23,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:23,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:23,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037383788] [2023-11-26 11:45:23,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:23,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:23,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2023-11-26 11:45:23,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 52 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:23,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:23,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2023-11-26 11:45:23,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:24,556 INFO L124 PetriNetUnfolderBase]: 3236/5593 cut-off events. [2023-11-26 11:45:24,556 INFO L125 PetriNetUnfolderBase]: For 2963/2983 co-relation queries the response was YES. [2023-11-26 11:45:24,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13273 conditions, 5593 events. 3236/5593 cut-off events. For 2963/2983 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 42636 event pairs, 939 based on Foata normal form. 96/5586 useless extension candidates. Maximal degree in co-relation 13258. Up to 1623 conditions per place. [2023-11-26 11:45:24,581 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 54 selfloop transitions, 3 changer transitions 31/110 dead transitions. [2023-11-26 11:45:24,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 568 flow [2023-11-26 11:45:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:24,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:24,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 361 transitions. [2023-11-26 11:45:24,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904891304347826 [2023-11-26 11:45:24,584 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 361 transitions. [2023-11-26 11:45:24,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 361 transitions. [2023-11-26 11:45:24,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:24,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 361 transitions. [2023-11-26 11:45:24,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.125) internal successors, (361), 8 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:24,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:24,588 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:24,588 INFO L175 Difference]: Start difference. First operand has 83 places, 52 transitions, 200 flow. Second operand 8 states and 361 transitions. [2023-11-26 11:45:24,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 568 flow [2023-11-26 11:45:24,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 110 transitions, 542 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-26 11:45:24,619 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 204 flow [2023-11-26 11:45:24,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=204, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2023-11-26 11:45:24,620 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2023-11-26 11:45:24,620 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 204 flow [2023-11-26 11:45:24,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:24,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:24,621 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 11:45:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:45:24,621 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:24,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1454534996, now seen corresponding path program 1 times [2023-11-26 11:45:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:24,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867850647] [2023-11-26 11:45:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:24,892 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 11:45:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:24,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867850647] [2023-11-26 11:45:24,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867850647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:24,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:24,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932058111] [2023-11-26 11:45:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:24,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:24,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:24,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2023-11-26 11:45:24,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:24,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:24,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2023-11-26 11:45:24,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:25,706 INFO L124 PetriNetUnfolderBase]: 2759/4741 cut-off events. [2023-11-26 11:45:25,706 INFO L125 PetriNetUnfolderBase]: For 4169/4211 co-relation queries the response was YES. [2023-11-26 11:45:25,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11526 conditions, 4741 events. 2759/4741 cut-off events. For 4169/4211 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 36025 event pairs, 451 based on Foata normal form. 96/4785 useless extension candidates. Maximal degree in co-relation 11509. Up to 1561 conditions per place. [2023-11-26 11:45:25,733 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 44 selfloop transitions, 3 changer transitions 35/104 dead transitions. [2023-11-26 11:45:25,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 557 flow [2023-11-26 11:45:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:25,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:25,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 355 transitions. [2023-11-26 11:45:25,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48233695652173914 [2023-11-26 11:45:25,735 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 355 transitions. [2023-11-26 11:45:25,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 355 transitions. [2023-11-26 11:45:25,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:25,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 355 transitions. [2023-11-26 11:45:25,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.375) internal successors, (355), 8 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 11:45:25,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:25,739 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:25,740 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 204 flow. Second operand 8 states and 355 transitions. [2023-11-26 11:45:25,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 557 flow [2023-11-26 11:45:25,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 507 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-11-26 11:45:25,782 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 199 flow [2023-11-26 11:45:25,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=199, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2023-11-26 11:45:25,783 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2023-11-26 11:45:25,783 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 199 flow [2023-11-26 11:45:25,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:25,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:25,784 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] [2023-11-26 11:45:25,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 11:45:25,784 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:25,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:25,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2095549970, now seen corresponding path program 1 times [2023-11-26 11:45:25,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:25,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579237948] [2023-11-26 11:45:25,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:25,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:26,057 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 11:45:26,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:26,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579237948] [2023-11-26 11:45:26,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579237948] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:26,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:26,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:26,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950634902] [2023-11-26 11:45:26,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:26,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 92 [2023-11-26 11:45:26,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:26,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:26,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 92 [2023-11-26 11:45:26,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:26,949 INFO L124 PetriNetUnfolderBase]: 2577/4646 cut-off events. [2023-11-26 11:45:26,949 INFO L125 PetriNetUnfolderBase]: For 3266/3287 co-relation queries the response was YES. [2023-11-26 11:45:26,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10932 conditions, 4646 events. 2577/4646 cut-off events. For 3266/3287 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 34631 event pairs, 655 based on Foata normal form. 96/4703 useless extension candidates. Maximal degree in co-relation 10916. Up to 1497 conditions per place. [2023-11-26 11:45:26,973 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 43 selfloop transitions, 3 changer transitions 37/105 dead transitions. [2023-11-26 11:45:26,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 540 flow [2023-11-26 11:45:26,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:26,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 357 transitions. [2023-11-26 11:45:26,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485054347826087 [2023-11-26 11:45:26,975 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 357 transitions. [2023-11-26 11:45:26,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 357 transitions. [2023-11-26 11:45:26,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:26,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 357 transitions. [2023-11-26 11:45:26,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.625) internal successors, (357), 8 states have internal predecessors, (357), 0 states have call successors, (0), 0 states 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 11:45:26,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:26,978 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:26,978 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 199 flow. Second operand 8 states and 357 transitions. [2023-11-26 11:45:26,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 540 flow [2023-11-26 11:45:27,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 495 flow, removed 17 selfloop flow, removed 9 redundant places. [2023-11-26 11:45:27,010 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 197 flow [2023-11-26 11:45:27,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2023-11-26 11:45:27,011 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -13 predicate places. [2023-11-26 11:45:27,011 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 197 flow [2023-11-26 11:45:27,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 11:45:27,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:27,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:27,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 11:45:27,012 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:27,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:27,013 INFO L85 PathProgramCache]: Analyzing trace with hash -2084628296, now seen corresponding path program 1 times [2023-11-26 11:45:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:27,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434546950] [2023-11-26 11:45:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:27,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:28,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434546950] [2023-11-26 11:45:28,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434546950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:28,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:28,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:45:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400708471] [2023-11-26 11:45:28,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:28,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:45:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:45:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:45:28,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 92 [2023-11-26 11:45:28,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 11:45:28,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:28,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 92 [2023-11-26 11:45:28,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:28,692 INFO L124 PetriNetUnfolderBase]: 1125/2041 cut-off events. [2023-11-26 11:45:28,692 INFO L125 PetriNetUnfolderBase]: For 1306/1320 co-relation queries the response was YES. [2023-11-26 11:45:28,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4774 conditions, 2041 events. 1125/2041 cut-off events. For 1306/1320 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 13117 event pairs, 197 based on Foata normal form. 64/2041 useless extension candidates. Maximal degree in co-relation 4759. Up to 1081 conditions per place. [2023-11-26 11:45:28,703 INFO L140 encePairwiseOnDemand]: 86/92 looper letters, 34 selfloop transitions, 6 changer transitions 21/85 dead transitions. [2023-11-26 11:45:28,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 415 flow [2023-11-26 11:45:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:45:28,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:45:28,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 355 transitions. [2023-11-26 11:45:28,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48233695652173914 [2023-11-26 11:45:28,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 355 transitions. [2023-11-26 11:45:28,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 355 transitions. [2023-11-26 11:45:28,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:28,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 355 transitions. [2023-11-26 11:45:28,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 44.375) internal successors, (355), 8 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 11:45:28,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:28,709 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 92.0) internal successors, (828), 9 states have internal predecessors, (828), 0 states have call successors, (0), 0 states 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 11:45:28,709 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 197 flow. Second operand 8 states and 355 transitions. [2023-11-26 11:45:28,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 415 flow [2023-11-26 11:45:28,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 362 flow, removed 21 selfloop flow, removed 10 redundant places. [2023-11-26 11:45:28,722 INFO L231 Difference]: Finished difference. Result has 84 places, 52 transitions, 193 flow [2023-11-26 11:45:28,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=84, PETRI_TRANSITIONS=52} [2023-11-26 11:45:28,723 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -15 predicate places. [2023-11-26 11:45:28,723 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 52 transitions, 193 flow [2023-11-26 11:45:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 39.142857142857146) internal successors, (274), 7 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 11:45:28,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:28,724 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 11:45:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 11:45:28,724 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:28,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1377233986, now seen corresponding path program 1 times [2023-11-26 11:45:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140054160] [2023-11-26 11:45:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:28,932 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 11:45:28,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140054160] [2023-11-26 11:45:28,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140054160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:28,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:45:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897402912] [2023-11-26 11:45:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:45:28,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:28,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:45:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:45:28,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2023-11-26 11:45:28,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 52 transitions, 193 flow. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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 11:45:28,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:28,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2023-11-26 11:45:28,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:29,922 INFO L124 PetriNetUnfolderBase]: 5877/8713 cut-off events. [2023-11-26 11:45:29,923 INFO L125 PetriNetUnfolderBase]: For 1075/1077 co-relation queries the response was YES. [2023-11-26 11:45:29,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19153 conditions, 8713 events. 5877/8713 cut-off events. For 1075/1077 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 53989 event pairs, 888 based on Foata normal form. 271/8893 useless extension candidates. Maximal degree in co-relation 19140. Up to 5359 conditions per place. [2023-11-26 11:45:29,991 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 51 selfloop transitions, 6 changer transitions 1/77 dead transitions. [2023-11-26 11:45:29,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 381 flow [2023-11-26 11:45:29,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:45:29,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-26 11:45:29,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2023-11-26 11:45:29,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-26 11:45:29,992 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 184 transitions. [2023-11-26 11:45:29,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 184 transitions. [2023-11-26 11:45:29,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:29,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 184 transitions. [2023-11-26 11:45:29,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:29,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:29,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 92.0) internal successors, (460), 5 states have internal predecessors, (460), 0 states have call successors, (0), 0 states 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 11:45:29,994 INFO L175 Difference]: Start difference. First operand has 84 places, 52 transitions, 193 flow. Second operand 4 states and 184 transitions. [2023-11-26 11:45:29,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 381 flow [2023-11-26 11:45:30,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 357 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-26 11:45:30,034 INFO L231 Difference]: Finished difference. Result has 78 places, 56 transitions, 215 flow [2023-11-26 11:45:30,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=78, PETRI_TRANSITIONS=56} [2023-11-26 11:45:30,035 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -21 predicate places. [2023-11-26 11:45:30,036 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 56 transitions, 215 flow [2023-11-26 11:45:30,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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 11:45:30,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:30,036 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] [2023-11-26 11:45:30,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-26 11:45:30,037 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:30,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:30,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1152583495, now seen corresponding path program 1 times [2023-11-26 11:45:30,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:30,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091145225] [2023-11-26 11:45:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:30,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:30,259 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 11:45:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:30,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091145225] [2023-11-26 11:45:30,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091145225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:30,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:30,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:45:30,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401756538] [2023-11-26 11:45:30,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:30,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:45:30,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:30,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:45:30,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:45:30,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2023-11-26 11:45:30,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 56 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 11:45:30,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:30,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2023-11-26 11:45:30,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:45:31,330 INFO L124 PetriNetUnfolderBase]: 5178/7747 cut-off events. [2023-11-26 11:45:31,330 INFO L125 PetriNetUnfolderBase]: For 2780/3019 co-relation queries the response was YES. [2023-11-26 11:45:31,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19267 conditions, 7747 events. 5178/7747 cut-off events. For 2780/3019 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46273 event pairs, 375 based on Foata normal form. 281/7963 useless extension candidates. Maximal degree in co-relation 19256. Up to 4441 conditions per place. [2023-11-26 11:45:31,397 INFO L140 encePairwiseOnDemand]: 85/92 looper letters, 63 selfloop transitions, 10 changer transitions 1/93 dead transitions. [2023-11-26 11:45:31,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 93 transitions, 486 flow [2023-11-26 11:45:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:45:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:45:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 232 transitions. [2023-11-26 11:45:31,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043478260869565 [2023-11-26 11:45:31,399 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 232 transitions. [2023-11-26 11:45:31,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 232 transitions. [2023-11-26 11:45:31,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:45:31,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 232 transitions. [2023-11-26 11:45:31,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 11:45:31,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 11:45:31,401 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 92.0) internal successors, (552), 6 states have internal predecessors, (552), 0 states have call successors, (0), 0 states 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 11:45:31,401 INFO L175 Difference]: Start difference. First operand has 78 places, 56 transitions, 215 flow. Second operand 5 states and 232 transitions. [2023-11-26 11:45:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 93 transitions, 486 flow [2023-11-26 11:45:31,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 475 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-26 11:45:31,406 INFO L231 Difference]: Finished difference. Result has 82 places, 60 transitions, 267 flow [2023-11-26 11:45:31,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=267, PETRI_PLACES=82, PETRI_TRANSITIONS=60} [2023-11-26 11:45:31,407 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -17 predicate places. [2023-11-26 11:45:31,407 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 60 transitions, 267 flow [2023-11-26 11:45:31,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 11:45:31,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:45:31,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:31,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 11:45:31,408 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 61 more)] === [2023-11-26 11:45:31,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:31,409 INFO L85 PathProgramCache]: Analyzing trace with hash 87074142, now seen corresponding path program 1 times [2023-11-26 11:45:31,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:31,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644336329] [2023-11-26 11:45:31,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:31,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:31,632 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 11:45:31,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:31,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644336329] [2023-11-26 11:45:31,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644336329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:31,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:31,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:45:31,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63358206] [2023-11-26 11:45:31,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:31,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:45:31,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:31,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:45:31,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:45:31,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 92 [2023-11-26 11:45:31,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 60 transitions, 267 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 11:45:31,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:45:31,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 92 [2023-11-26 11:45:31,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand