./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/test-easy10.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:27:50,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:27:50,365 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:27:50,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:27:50,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:27:50,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:27:50,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:27:50,396 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:27:50,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:27:50,398 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:27:50,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:27:50,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:27:50,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:27:50,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:27:50,401 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:27:50,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:27:50,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:27:50,403 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:27:50,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:27:50,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:27:50,405 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:27:50,406 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:27:50,407 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:27:50,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:27:50,408 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:27:50,408 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:27:50,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:27:50,409 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:27:50,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:27:50,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:27:50,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:27:50,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:27:50,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:50,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:27:50,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:27:50,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:27:50,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:27:50,414 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:27:50,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:27:50,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:27:50,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:27:50,416 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_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2023-11-24 21:27:50,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:27:50,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:27:50,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:27:50,737 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:27:50,737 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:27:50,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-24 21:27:53,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:27:54,074 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:27:54,075 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/sv-benchmarks/c/weaver/test-easy10.wvr.c [2023-11-24 21:27:54,086 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/data/7fb5cfc53/0e515745d15e457fa2f2956ef0cb3d36/FLAG3cfb92cbb [2023-11-24 21:27:54,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/data/7fb5cfc53/0e515745d15e457fa2f2956ef0cb3d36 [2023-11-24 21:27:54,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:27:54,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:27:54,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:54,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:27:54,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:27:54,123 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4d1224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54, skipping insertion in model container [2023-11-24 21:27:54,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:27:54,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:54,482 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:27:54,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:27:54,520 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:27:54,520 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:27:54,528 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:27:54,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54 WrapperNode [2023-11-24 21:27:54,529 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:27:54,530 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:54,530 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:27:54,530 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:27:54,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,547 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,572 INFO L138 Inliner]: procedures = 23, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 197 [2023-11-24 21:27:54,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:27:54,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:27:54,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:27:54,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:27:54,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,604 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2023-11-24 21:27:54,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:27:54,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:27:54,623 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:27:54,623 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:27:54,624 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (1/1) ... [2023-11-24 21:27:54,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:27:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:27:54,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:27:54,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27c808ae-6a8b-43a9-8485-4a3bd08a1dde/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:27:54,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:27:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:27:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:27:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:27:54,730 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:27:54,730 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-24 21:27:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-24 21:27:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-24 21:27:54,731 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-24 21:27:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:27:54,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:27:54,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:27:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:27:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:27:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-24 21:27:54,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:27:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:27:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:27:54,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:27:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:27:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:27:54,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:27:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:27:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-24 21:27:54,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:27:54,737 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:27:54,862 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:27:54,863 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:27:55,228 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:27:55,457 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:27:55,457 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:27:55,458 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:55 BoogieIcfgContainer [2023-11-24 21:27:55,459 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:27:55,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:27:55,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:27:55,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:27:55,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:27:54" (1/3) ... [2023-11-24 21:27:55,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27be9d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:55, skipping insertion in model container [2023-11-24 21:27:55,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:27:54" (2/3) ... [2023-11-24 21:27:55,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27be9d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:27:55, skipping insertion in model container [2023-11-24 21:27:55,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:27:55" (3/3) ... [2023-11-24 21:27:55,473 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2023-11-24 21:27:55,494 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:27:55,494 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-24 21:27:55,494 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:27:55,577 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-24 21:27:55,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 81 transitions, 190 flow [2023-11-24 21:27:55,677 INFO L124 PetriNetUnfolderBase]: 0/77 cut-off events. [2023-11-24 21:27:55,678 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:27:55,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 77 events. 0/77 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 168 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-24 21:27:55,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 81 transitions, 190 flow [2023-11-24 21:27:55,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 76 transitions, 176 flow [2023-11-24 21:27:55,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:27:55,709 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;@8941c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:27:55,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-24 21:27:55,732 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:27:55,733 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:27:55,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:27:55,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:55,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:27:55,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:55,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash 12619, now seen corresponding path program 1 times [2023-11-24 21:27:55,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:55,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63252511] [2023-11-24 21:27:55,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:55,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:55,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:56,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:56,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63252511] [2023-11-24 21:27:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63252511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:56,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:56,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752223484] [2023-11-24 21:27:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:56,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:56,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:56,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:56,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-24 21:27:56,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 76 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:56,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:56,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-24 21:27:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:56,745 INFO L124 PetriNetUnfolderBase]: 772/1732 cut-off events. [2023-11-24 21:27:56,745 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-11-24 21:27:56,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2994 conditions, 1732 events. 772/1732 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 12577 event pairs, 772 based on Foata normal form. 1/1420 useless extension candidates. Maximal degree in co-relation 2564. Up to 1136 conditions per place. [2023-11-24 21:27:56,772 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-24 21:27:56,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 216 flow [2023-11-24 21:27:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:56,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-11-24 21:27:56,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2023-11-24 21:27:56,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-11-24 21:27:56,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-11-24 21:27:56,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:56,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-11-24 21:27:56,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:56,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:56,800 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:56,802 INFO L175 Difference]: Start difference. First operand has 89 places, 76 transitions, 176 flow. Second operand 3 states and 186 transitions. [2023-11-24 21:27:56,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 216 flow [2023-11-24 21:27:56,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 72 transitions, 200 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-24 21:27:56,815 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 154 flow [2023-11-24 21:27:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-11-24 21:27:56,821 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2023-11-24 21:27:56,821 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 154 flow [2023-11-24 21:27:56,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:56,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:56,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:27:56,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:27:56,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:56,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 12620, now seen corresponding path program 1 times [2023-11-24 21:27:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404389928] [2023-11-24 21:27:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:57,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:57,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404389928] [2023-11-24 21:27:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404389928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:57,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920220578] [2023-11-24 21:27:57,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:57,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:57,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:57,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:57,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:57,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-24 21:27:57,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 154 flow. Second operand has 3 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) [2023-11-24 21:27:57,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:57,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-24 21:27:57,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:57,383 INFO L124 PetriNetUnfolderBase]: 556/1434 cut-off events. [2023-11-24 21:27:57,384 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:27:57,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2316 conditions, 1434 events. 556/1434 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 10491 event pairs, 556 based on Foata normal form. 82/1257 useless extension candidates. Maximal degree in co-relation 2310. Up to 838 conditions per place. [2023-11-24 21:27:57,400 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-11-24 21:27:57,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 194 flow [2023-11-24 21:27:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-24 21:27:57,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-24 21:27:57,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-24 21:27:57,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-24 21:27:57,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:57,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-24 21:27:57,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,424 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 154 flow. Second operand 3 states and 189 transitions. [2023-11-24 21:27:57,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 194 flow [2023-11-24 21:27:57,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 70 transitions, 193 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:57,428 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 151 flow [2023-11-24 21:27:57,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2023-11-24 21:27:57,429 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -11 predicate places. [2023-11-24 21:27:57,429 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 151 flow [2023-11-24 21:27:57,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-24 21:27:57,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:57,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:27:57,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:27:57,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:57,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash 376334815, now seen corresponding path program 1 times [2023-11-24 21:27:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:57,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289153042] [2023-11-24 21:27:57,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:57,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:57,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289153042] [2023-11-24 21:27:57,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289153042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:57,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:57,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:57,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575691110] [2023-11-24 21:27:57,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:57,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:57,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:57,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:57,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-24 21:27:57,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:57,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-24 21:27:57,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:57,935 INFO L124 PetriNetUnfolderBase]: 612/1460 cut-off events. [2023-11-24 21:27:57,935 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:27:57,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2429 conditions, 1460 events. 612/1460 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10531 event pairs, 612 based on Foata normal form. 0/1259 useless extension candidates. Maximal degree in co-relation 2422. Up to 924 conditions per place. [2023-11-24 21:27:57,951 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-24 21:27:57,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 195 flow [2023-11-24 21:27:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-24 21:27:57,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-24 21:27:57,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-24 21:27:57,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-24 21:27:57,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:57,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-24 21:27:57,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,958 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 151 flow. Second operand 3 states and 185 transitions. [2023-11-24 21:27:57,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 195 flow [2023-11-24 21:27:57,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 68 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:57,963 INFO L231 Difference]: Finished difference. Result has 77 places, 68 transitions, 148 flow [2023-11-24 21:27:57,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=77, PETRI_TRANSITIONS=68} [2023-11-24 21:27:57,965 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -12 predicate places. [2023-11-24 21:27:57,965 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 148 flow [2023-11-24 21:27:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:57,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:57,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:27:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:27:57,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 376334816, now seen corresponding path program 1 times [2023-11-24 21:27:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350059018] [2023-11-24 21:27:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:57,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:58,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:58,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350059018] [2023-11-24 21:27:58,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350059018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:58,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626296515] [2023-11-24 21:27:58,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:58,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:58,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:58,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:58,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:58,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-24 21:27:58,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:58,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-24 21:27:58,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:58,425 INFO L124 PetriNetUnfolderBase]: 556/1374 cut-off events. [2023-11-24 21:27:58,426 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:27:58,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1374 events. 556/1374 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9886 event pairs, 556 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 2250. Up to 838 conditions per place. [2023-11-24 21:27:58,441 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2023-11-24 21:27:58,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 188 flow [2023-11-24 21:27:58,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:58,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-24 21:27:58,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-24 21:27:58,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-24 21:27:58,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-24 21:27:58,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:58,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-24 21:27:58,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,447 INFO L175 Difference]: Start difference. First operand has 77 places, 68 transitions, 148 flow. Second operand 3 states and 189 transitions. [2023-11-24 21:27:58,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 188 flow [2023-11-24 21:27:58,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:58,452 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 145 flow [2023-11-24 21:27:58,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-11-24 21:27:58,455 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -13 predicate places. [2023-11-24 21:27:58,455 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 145 flow [2023-11-24 21:27:58,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:58,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:27:58,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:58,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:58,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238028, now seen corresponding path program 1 times [2023-11-24 21:27:58,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:58,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107896176] [2023-11-24 21:27:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:58,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107896176] [2023-11-24 21:27:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107896176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:58,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899723572] [2023-11-24 21:27:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:58,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-24 21:27:58,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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) [2023-11-24 21:27:58,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:58,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-24 21:27:58,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:58,814 INFO L124 PetriNetUnfolderBase]: 580/1380 cut-off events. [2023-11-24 21:27:58,814 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-24 21:27:58,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 1380 events. 580/1380 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9830 event pairs, 580 based on Foata normal form. 0/1211 useless extension candidates. Maximal degree in co-relation 2298. Up to 880 conditions per place. [2023-11-24 21:27:58,830 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-11-24 21:27:58,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 189 flow [2023-11-24 21:27:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-24 21:27:58,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-24 21:27:58,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-24 21:27:58,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-24 21:27:58,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:58,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-24 21:27:58,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:58,835 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 145 flow. Second operand 3 states and 185 transitions. [2023-11-24 21:27:58,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 189 flow [2023-11-24 21:27:58,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:58,838 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 142 flow [2023-11-24 21:27:58,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-11-24 21:27:58,839 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2023-11-24 21:27:58,839 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 142 flow [2023-11-24 21:27:58,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 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) [2023-11-24 21:27:58,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:58,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:58,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:27:58,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:58,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:58,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1526238029, now seen corresponding path program 1 times [2023-11-24 21:27:58,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:58,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283264016] [2023-11-24 21:27:58,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:58,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:58,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:58,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:58,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283264016] [2023-11-24 21:27:58,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283264016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:58,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:58,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:58,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416078744] [2023-11-24 21:27:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:58,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:58,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:59,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-24 21:27:59,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:59,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-24 21:27:59,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:59,190 INFO L124 PetriNetUnfolderBase]: 556/1338 cut-off events. [2023-11-24 21:27:59,191 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:27:59,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1338 events. 556/1338 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9529 event pairs, 556 based on Foata normal form. 18/1193 useless extension candidates. Maximal degree in co-relation 2214. Up to 838 conditions per place. [2023-11-24 21:27:59,205 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/62 dead transitions. [2023-11-24 21:27:59,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 62 transitions, 182 flow [2023-11-24 21:27:59,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:59,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-24 21:27:59,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-24 21:27:59,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:59,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,211 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 142 flow. Second operand 3 states and 189 transitions. [2023-11-24 21:27:59,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 62 transitions, 182 flow [2023-11-24 21:27:59,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 62 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:59,213 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 139 flow [2023-11-24 21:27:59,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2023-11-24 21:27:59,214 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2023-11-24 21:27:59,215 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 139 flow [2023-11-24 21:27:59,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:59,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:27:59,216 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:59,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:59,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701250, now seen corresponding path program 1 times [2023-11-24 21:27:59,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811717682] [2023-11-24 21:27:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811717682] [2023-11-24 21:27:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811717682] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:59,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631341004] [2023-11-24 21:27:59,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:59,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:59,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:59,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:59,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 81 [2023-11-24 21:27:59,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:59,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 81 [2023-11-24 21:27:59,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:59,528 INFO L124 PetriNetUnfolderBase]: 556/1308 cut-off events. [2023-11-24 21:27:59,528 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:27:59,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 1308 events. 556/1308 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9133 event pairs, 556 based on Foata normal form. 30/1205 useless extension candidates. Maximal degree in co-relation 2184. Up to 838 conditions per place. [2023-11-24 21:27:59,542 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 21 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-11-24 21:27:59,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 179 flow [2023-11-24 21:27:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:59,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2023-11-24 21:27:59,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-24 21:27:59,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:59,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 189 transitions. [2023-11-24 21:27:59,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,548 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 139 flow. Second operand 3 states and 189 transitions. [2023-11-24 21:27:59,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 179 flow [2023-11-24 21:27:59,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 60 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:59,550 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 136 flow [2023-11-24 21:27:59,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-11-24 21:27:59,551 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -16 predicate places. [2023-11-24 21:27:59,552 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 136 flow [2023-11-24 21:27:59,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:59,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:59,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:27:59,553 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:59,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1633701249, now seen corresponding path program 1 times [2023-11-24 21:27:59,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:59,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678700159] [2023-11-24 21:27:59,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:59,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:27:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:27:59,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:27:59,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678700159] [2023-11-24 21:27:59,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678700159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:27:59,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:27:59,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:27:59,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855299550] [2023-11-24 21:27:59,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:27:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:27:59,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:27:59,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:27:59,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:27:59,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 81 [2023-11-24 21:27:59,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 136 flow. Second operand has 3 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) [2023-11-24 21:27:59,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:27:59,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 81 [2023-11-24 21:27:59,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:27:59,823 INFO L124 PetriNetUnfolderBase]: 612/1334 cut-off events. [2023-11-24 21:27:59,823 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-24 21:27:59,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 1334 events. 612/1334 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9073 event pairs, 612 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 2296. Up to 924 conditions per place. [2023-11-24 21:27:59,838 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 23 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-24 21:27:59,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 58 transitions, 180 flow [2023-11-24 21:27:59,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:27:59,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:27:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2023-11-24 21:27:59,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7613168724279835 [2023-11-24 21:27:59,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 185 transitions. [2023-11-24 21:27:59,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 185 transitions. [2023-11-24 21:27:59,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:27:59,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 185 transitions. [2023-11-24 21:27:59,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:27:59,843 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 136 flow. Second operand 3 states and 185 transitions. [2023-11-24 21:27:59,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 58 transitions, 180 flow [2023-11-24 21:27:59,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 58 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:27:59,871 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 133 flow [2023-11-24 21:27:59,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2023-11-24 21:27:59,873 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -17 predicate places. [2023-11-24 21:27:59,873 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 133 flow [2023-11-24 21:27:59,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-24 21:27:59,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:27:59,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:27:59,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:27:59,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:27:59,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:27:59,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1482862844, now seen corresponding path program 1 times [2023-11-24 21:27:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:27:59,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548563098] [2023-11-24 21:27:59,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:27:59,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:27:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:00,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:00,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548563098] [2023-11-24 21:28:00,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548563098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:00,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:00,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:00,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104178100] [2023-11-24 21:28:00,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:00,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:00,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:00,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:00,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:00,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-24 21:28:00,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:00,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-24 21:28:00,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:00,262 INFO L124 PetriNetUnfolderBase]: 597/1234 cut-off events. [2023-11-24 21:28:00,262 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2023-11-24 21:28:00,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2188 conditions, 1234 events. 597/1234 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7670 event pairs, 142 based on Foata normal form. 25/1223 useless extension candidates. Maximal degree in co-relation 2175. Up to 853 conditions per place. [2023-11-24 21:28:00,273 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 30 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-24 21:28:00,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 67 transitions, 217 flow [2023-11-24 21:28:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-24 21:28:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8271604938271605 [2023-11-24 21:28:00,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-24 21:28:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-24 21:28:00,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:00,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-24 21:28:00,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,278 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,278 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 133 flow. Second operand 3 states and 201 transitions. [2023-11-24 21:28:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 67 transitions, 217 flow [2023-11-24 21:28:00,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:28:00,281 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 140 flow [2023-11-24 21:28:00,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=140, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-11-24 21:28:00,282 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -15 predicate places. [2023-11-24 21:28:00,282 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 140 flow [2023-11-24 21:28:00,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:00,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:00,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:28:00,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:00,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:00,284 INFO L85 PathProgramCache]: Analyzing trace with hash 508274962, now seen corresponding path program 2 times [2023-11-24 21:28:00,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:00,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545196595] [2023-11-24 21:28:00,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:00,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545196595] [2023-11-24 21:28:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545196595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:00,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:00,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34009516] [2023-11-24 21:28:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:00,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:00,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:00,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-24 21:28:00,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:00,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-24 21:28:00,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:00,657 INFO L124 PetriNetUnfolderBase]: 507/1050 cut-off events. [2023-11-24 21:28:00,657 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-24 21:28:00,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1928 conditions, 1050 events. 507/1050 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6323 event pairs, 156 based on Foata normal form. 26/1032 useless extension candidates. Maximal degree in co-relation 1913. Up to 645 conditions per place. [2023-11-24 21:28:00,667 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 28 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-24 21:28:00,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 218 flow [2023-11-24 21:28:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:00,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 199 transitions. [2023-11-24 21:28:00,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8189300411522634 [2023-11-24 21:28:00,669 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 199 transitions. [2023-11-24 21:28:00,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 199 transitions. [2023-11-24 21:28:00,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:00,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 199 transitions. [2023-11-24 21:28:00,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 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) [2023-11-24 21:28:00,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,672 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 140 flow. Second operand 3 states and 199 transitions. [2023-11-24 21:28:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 218 flow [2023-11-24 21:28:00,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:00,674 INFO L231 Difference]: Finished difference. Result has 75 places, 58 transitions, 144 flow [2023-11-24 21:28:00,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=144, PETRI_PLACES=75, PETRI_TRANSITIONS=58} [2023-11-24 21:28:00,675 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -14 predicate places. [2023-11-24 21:28:00,675 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 58 transitions, 144 flow [2023-11-24 21:28:00,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:00,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:00,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:28:00,677 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:00,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 54161014, now seen corresponding path program 3 times [2023-11-24 21:28:00,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:00,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954606702] [2023-11-24 21:28:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954606702] [2023-11-24 21:28:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954606702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:03,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:03,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-24 21:28:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832598071] [2023-11-24 21:28:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:03,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:28:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:03,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:28:03,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:28:03,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-24 21:28:03,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 58 transitions, 144 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:03,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:03,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-24 21:28:03,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:09,322 INFO L124 PetriNetUnfolderBase]: 22288/32865 cut-off events. [2023-11-24 21:28:09,322 INFO L125 PetriNetUnfolderBase]: For 2608/2692 co-relation queries the response was YES. [2023-11-24 21:28:09,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66440 conditions, 32865 events. 22288/32865 cut-off events. For 2608/2692 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 220124 event pairs, 2239 based on Foata normal form. 43/32898 useless extension candidates. Maximal degree in co-relation 66424. Up to 7260 conditions per place. [2023-11-24 21:28:09,619 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 215 selfloop transitions, 14 changer transitions 19/268 dead transitions. [2023-11-24 21:28:09,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 268 transitions, 1120 flow [2023-11-24 21:28:09,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:28:09,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-24 21:28:09,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 823 transitions. [2023-11-24 21:28:09,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7257495590828924 [2023-11-24 21:28:09,623 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 823 transitions. [2023-11-24 21:28:09,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 823 transitions. [2023-11-24 21:28:09,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:09,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 823 transitions. [2023-11-24 21:28:09,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.785714285714285) internal successors, (823), 14 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:09,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:09,631 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:09,631 INFO L175 Difference]: Start difference. First operand has 75 places, 58 transitions, 144 flow. Second operand 14 states and 823 transitions. [2023-11-24 21:28:09,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 268 transitions, 1120 flow [2023-11-24 21:28:09,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 268 transitions, 1116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:09,641 INFO L231 Difference]: Finished difference. Result has 98 places, 71 transitions, 253 flow [2023-11-24 21:28:09,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=253, PETRI_PLACES=98, PETRI_TRANSITIONS=71} [2023-11-24 21:28:09,642 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 9 predicate places. [2023-11-24 21:28:09,643 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 71 transitions, 253 flow [2023-11-24 21:28:09,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:09,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:09,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:09,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:28:09,644 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:09,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:09,645 INFO L85 PathProgramCache]: Analyzing trace with hash -985381992, now seen corresponding path program 4 times [2023-11-24 21:28:09,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:09,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385927189] [2023-11-24 21:28:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:09,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:09,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385927189] [2023-11-24 21:28:09,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385927189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:09,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543914173] [2023-11-24 21:28:09,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:09,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:09,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-24 21:28:09,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 71 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:09,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:09,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-24 21:28:09,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:10,765 INFO L124 PetriNetUnfolderBase]: 2554/5150 cut-off events. [2023-11-24 21:28:10,766 INFO L125 PetriNetUnfolderBase]: For 1314/1670 co-relation queries the response was YES. [2023-11-24 21:28:10,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11331 conditions, 5150 events. 2554/5150 cut-off events. For 1314/1670 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 41164 event pairs, 721 based on Foata normal form. 57/4726 useless extension candidates. Maximal degree in co-relation 11304. Up to 3418 conditions per place. [2023-11-24 21:28:10,836 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 30 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-11-24 21:28:10,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 80 transitions, 340 flow [2023-11-24 21:28:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:10,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 201 transitions. [2023-11-24 21:28:10,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8271604938271605 [2023-11-24 21:28:10,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 201 transitions. [2023-11-24 21:28:10,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 201 transitions. [2023-11-24 21:28:10,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:10,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 201 transitions. [2023-11-24 21:28:10,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:10,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:10,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:10,843 INFO L175 Difference]: Start difference. First operand has 98 places, 71 transitions, 253 flow. Second operand 3 states and 201 transitions. [2023-11-24 21:28:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 80 transitions, 340 flow [2023-11-24 21:28:10,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 80 transitions, 335 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-24 21:28:10,899 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 256 flow [2023-11-24 21:28:10,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2023-11-24 21:28:10,902 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 7 predicate places. [2023-11-24 21:28:10,902 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 256 flow [2023-11-24 21:28:10,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:10,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:10,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:10,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:28:10,903 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:10,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash -183344146, now seen corresponding path program 5 times [2023-11-24 21:28:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718668621] [2023-11-24 21:28:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:11,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:11,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:11,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718668621] [2023-11-24 21:28:11,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718668621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:11,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:11,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:11,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930475442] [2023-11-24 21:28:11,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:11,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:28:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:11,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:28:11,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:28:11,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2023-11-24 21:28:11,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:11,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:11,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2023-11-24 21:28:11,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:11,823 INFO L124 PetriNetUnfolderBase]: 2112/4384 cut-off events. [2023-11-24 21:28:11,823 INFO L125 PetriNetUnfolderBase]: For 1051/1073 co-relation queries the response was YES. [2023-11-24 21:28:11,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 4384 events. 2112/4384 cut-off events. For 1051/1073 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 34815 event pairs, 984 based on Foata normal form. 24/4019 useless extension candidates. Maximal degree in co-relation 9482. Up to 3135 conditions per place. [2023-11-24 21:28:11,871 INFO L140 encePairwiseOnDemand]: 78/81 looper letters, 32 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-24 21:28:11,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 81 transitions, 347 flow [2023-11-24 21:28:11,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:28:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:28:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2023-11-24 21:28:11,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8353909465020576 [2023-11-24 21:28:11,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2023-11-24 21:28:11,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2023-11-24 21:28:11,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:11,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2023-11-24 21:28:11,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:11,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:11,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:11,876 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 256 flow. Second operand 3 states and 203 transitions. [2023-11-24 21:28:11,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 81 transitions, 347 flow [2023-11-24 21:28:11,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 81 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:11,887 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 252 flow [2023-11-24 21:28:11,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=94, 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=252, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-11-24 21:28:11,889 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2023-11-24 21:28:11,889 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 252 flow [2023-11-24 21:28:11,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.666666666666664) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:11,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:11,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:11,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:28:11,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:11,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1606885670, now seen corresponding path program 6 times [2023-11-24 21:28:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:11,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709691150] [2023-11-24 21:28:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:15,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:15,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709691150] [2023-11-24 21:28:15,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709691150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:15,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:15,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-24 21:28:15,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125218903] [2023-11-24 21:28:15,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:15,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:28:15,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:28:15,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:28:15,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-24 21:28:15,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 252 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:15,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:15,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-24 21:28:15,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:28:23,304 INFO L124 PetriNetUnfolderBase]: 28762/42581 cut-off events. [2023-11-24 21:28:23,304 INFO L125 PetriNetUnfolderBase]: For 29072/29093 co-relation queries the response was YES. [2023-11-24 21:28:23,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112241 conditions, 42581 events. 28762/42581 cut-off events. For 29072/29093 co-relation queries the response was YES. Maximal size of possible extension queue 1192. Compared 285035 event pairs, 4924 based on Foata normal form. 10/42572 useless extension candidates. Maximal degree in co-relation 112213. Up to 12073 conditions per place. [2023-11-24 21:28:23,797 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 256 selfloop transitions, 26 changer transitions 10/312 dead transitions. [2023-11-24 21:28:23,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 312 transitions, 1714 flow [2023-11-24 21:28:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:28:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-24 21:28:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 814 transitions. [2023-11-24 21:28:23,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7178130511463845 [2023-11-24 21:28:23,803 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 814 transitions. [2023-11-24 21:28:23,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 814 transitions. [2023-11-24 21:28:23,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:28:23,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 814 transitions. [2023-11-24 21:28:23,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.142857142857146) internal successors, (814), 14 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,814 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:23,814 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 252 flow. Second operand 14 states and 814 transitions. [2023-11-24 21:28:23,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 312 transitions, 1714 flow [2023-11-24 21:28:24,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 312 transitions, 1710 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:28:24,308 INFO L231 Difference]: Finished difference. Result has 119 places, 89 transitions, 479 flow [2023-11-24 21:28:24,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=479, PETRI_PLACES=119, PETRI_TRANSITIONS=89} [2023-11-24 21:28:24,309 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 30 predicate places. [2023-11-24 21:28:24,310 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 89 transitions, 479 flow [2023-11-24 21:28:24,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:24,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:28:24,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:28:24,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-24 21:28:24,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:24,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1458699866, now seen corresponding path program 7 times [2023-11-24 21:28:24,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:24,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97765275] [2023-11-24 21:28:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:24,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:26,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:26,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:26,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97765275] [2023-11-24 21:28:26,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97765275] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:26,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:26,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-24 21:28:26,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550891779] [2023-11-24 21:28:26,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:26,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:28:26,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:26,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:28:26,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:28:27,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 81 [2023-11-24 21:28:27,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 89 transitions, 479 flow. Second operand has 14 states, 14 states have (on average 43.714285714285715) internal successors, (612), 14 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:28:27,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:28:27,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 81 [2023-11-24 21:28:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand