./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 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_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx --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 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:21:17,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:21:17,127 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:21:17,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:21:17,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:21:17,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:21:17,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:21:17,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:21:17,160 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:21:17,161 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:21:17,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:21:17,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:21:17,163 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:21:17,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:21:17,164 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:21:17,164 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:21:17,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:21:17,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:21:17,166 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:21:17,167 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:21:17,167 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:21:17,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:21:17,168 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:21:17,169 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:21:17,170 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:21:17,170 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:21:17,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:21:17,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:21:17,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:21:17,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:21:17,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:17,173 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:21:17,173 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:21:17,174 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:21:17,174 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:21:17,175 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:21:17,175 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:21:17,176 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:21:17,176 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:21:17,176 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_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab [2023-11-21 22:21:17,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:21:17,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:21:17,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:21:17,542 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:21:17,542 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:21:17,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2023-11-21 22:21:20,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:21:20,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:21:20,902 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/sv-benchmarks/c/weaver/chl-collitem-trans.wvr.c [2023-11-21 22:21:20,911 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/data/b4c115cfe/294efcc4c6b944f3867b852c55f7c0ae/FLAG419d12e6a [2023-11-21 22:21:20,926 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/data/b4c115cfe/294efcc4c6b944f3867b852c55f7c0ae [2023-11-21 22:21:20,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:21:20,930 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:21:20,931 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:20,932 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:21:20,937 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:21:20,938 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:20" (1/1) ... [2023-11-21 22:21:20,941 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bb70eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:20, skipping insertion in model container [2023-11-21 22:21:20,942 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:21:20" (1/1) ... [2023-11-21 22:21:20,983 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:21:21,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:21,265 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:21:21,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:21:21,332 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:21,337 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:21:21,345 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:21:21,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21 WrapperNode [2023-11-21 22:21:21,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:21:21,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:21,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:21:21,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:21:21,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,429 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 365 [2023-11-21 22:21:21,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:21:21,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:21:21,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:21:21,430 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:21:21,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,460 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:21:21,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:21:21,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:21:21,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:21:21,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (1/1) ... [2023-11-21 22:21:21,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:21:21,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:21:21,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:21:21,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:21:21,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:21:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:21:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:21:21,565 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:21:21,565 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:21:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:21:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:21:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:21:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:21:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:21:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:21:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:21:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:21:21,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:21:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:21:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:21:21,570 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:21:21,699 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:21:21,702 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:21:22,365 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:21:23,189 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:21:23,189 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:21:23,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:23 BoogieIcfgContainer [2023-11-21 22:21:23,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:21:23,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:21:23,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:21:23,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:21:23,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:21:20" (1/3) ... [2023-11-21 22:21:23,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:23, skipping insertion in model container [2023-11-21 22:21:23,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:21:21" (2/3) ... [2023-11-21 22:21:23,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f7f35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:21:23, skipping insertion in model container [2023-11-21 22:21:23,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:23" (3/3) ... [2023-11-21 22:21:23,208 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2023-11-21 22:21:23,230 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:21:23,232 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-21 22:21:23,233 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:21:23,358 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-21 22:21:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 47 transitions, 115 flow [2023-11-21 22:21:23,465 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-21 22:21:23,465 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:21:23,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 0/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-11-21 22:21:23,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 47 transitions, 115 flow [2023-11-21 22:21:23,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 43 transitions, 104 flow [2023-11-21 22:21:23,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:21:23,498 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;@3c37389f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:21:23,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-21 22:21:23,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:21:23,503 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:21:23,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:21:23,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:23,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:21:23,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:23,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:23,509 INFO L85 PathProgramCache]: Analyzing trace with hash 39519, now seen corresponding path program 1 times [2023-11-21 22:21:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768417198] [2023-11-21 22:21:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:23,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:24,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:24,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768417198] [2023-11-21 22:21:24,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768417198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:24,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:24,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594713110] [2023-11-21 22:21:24,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:24,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:24,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:24,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:24,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-21 22:21:24,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:24,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-21 22:21:24,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:24,459 INFO L124 PetriNetUnfolderBase]: 178/400 cut-off events. [2023-11-21 22:21:24,460 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-21 22:21:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 400 events. 178/400 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1818 event pairs, 178 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 611. Up to 299 conditions per place. [2023-11-21 22:21:24,472 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-21 22:21:24,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 39 transitions, 134 flow [2023-11-21 22:21:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:24,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-21 22:21:24,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-21 22:21:24,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-21 22:21:24,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-21 22:21:24,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:24,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-21 22:21:24,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,508 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 3 states and 94 transitions. [2023-11-21 22:21:24,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 39 transitions, 134 flow [2023-11-21 22:21:24,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 122 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-21 22:21:24,520 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 86 flow [2023-11-21 22:21:24,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-21 22:21:24,526 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-21 22:21:24,527 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 86 flow [2023-11-21 22:21:24,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:24,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:21:24,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:21:24,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:24,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 39520, now seen corresponding path program 1 times [2023-11-21 22:21:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:24,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287223415] [2023-11-21 22:21:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:24,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287223415] [2023-11-21 22:21:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287223415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:24,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:24,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833097898] [2023-11-21 22:21:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:24,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:24,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:24,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:24,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-21 22:21:24,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:24,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-21 22:21:24,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:24,978 INFO L124 PetriNetUnfolderBase]: 124/302 cut-off events. [2023-11-21 22:21:24,978 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-21 22:21:24,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 302 events. 124/302 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1332 event pairs, 124 based on Foata normal form. 28/285 useless extension candidates. Maximal degree in co-relation 530. Up to 217 conditions per place. [2023-11-21 22:21:24,986 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-11-21 22:21:24,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 116 flow [2023-11-21 22:21:24,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-21 22:21:24,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-21 22:21:24,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-21 22:21:24,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-21 22:21:24,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:24,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-21 22:21:24,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:24,999 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 86 flow. Second operand 3 states and 97 transitions. [2023-11-21 22:21:25,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 116 flow [2023-11-21 22:21:25,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:25,005 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 83 flow [2023-11-21 22:21:25,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-21 22:21:25,006 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-21 22:21:25,006 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 83 flow [2023-11-21 22:21:25,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:25,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:21:25,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:21:25,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:25,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1178492092, now seen corresponding path program 1 times [2023-11-21 22:21:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:25,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181779498] [2023-11-21 22:21:25,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181779498] [2023-11-21 22:21:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181779498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:25,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619632174] [2023-11-21 22:21:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:25,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:25,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:25,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:25,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-21 22:21:25,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:25,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-21 22:21:25,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:25,325 INFO L124 PetriNetUnfolderBase]: 138/317 cut-off events. [2023-11-21 22:21:25,325 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-21 22:21:25,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 317 events. 138/317 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1342 event pairs, 138 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 571. Up to 243 conditions per place. [2023-11-21 22:21:25,328 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-21 22:21:25,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 117 flow [2023-11-21 22:21:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:25,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-21 22:21:25,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-21 22:21:25,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:25,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,333 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 83 flow. Second operand 3 states and 93 transitions. [2023-11-21 22:21:25,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 117 flow [2023-11-21 22:21:25,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:25,335 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 80 flow [2023-11-21 22:21:25,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-11-21 22:21:25,337 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-21 22:21:25,337 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 80 flow [2023-11-21 22:21:25,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:25,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:21:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:21:25,338 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:25,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1178492093, now seen corresponding path program 1 times [2023-11-21 22:21:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:25,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087629545] [2023-11-21 22:21:25,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:25,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:25,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087629545] [2023-11-21 22:21:25,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087629545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:25,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:25,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:25,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812573519] [2023-11-21 22:21:25,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:25,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:25,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:25,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-21 22:21:25,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:25,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-21 22:21:25,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:25,642 INFO L124 PetriNetUnfolderBase]: 138/309 cut-off events. [2023-11-21 22:21:25,642 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-21 22:21:25,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 571 conditions, 309 events. 138/309 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1294 event pairs, 138 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 563. Up to 243 conditions per place. [2023-11-21 22:21:25,645 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-21 22:21:25,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 114 flow [2023-11-21 22:21:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:25,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-21 22:21:25,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-21 22:21:25,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:25,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-21 22:21:25,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,652 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,653 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 80 flow. Second operand 3 states and 93 transitions. [2023-11-21 22:21:25,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 114 flow [2023-11-21 22:21:25,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:25,656 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 77 flow [2023-11-21 22:21:25,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-21 22:21:25,658 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-21 22:21:25,659 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 77 flow [2023-11-21 22:21:25,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:25,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:25,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:21:25,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:25,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1396420764, now seen corresponding path program 1 times [2023-11-21 22:21:25,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:25,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932632391] [2023-11-21 22:21:25,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:25,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932632391] [2023-11-21 22:21:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932632391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:25,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:25,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401003254] [2023-11-21 22:21:25,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:25,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:25,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:25,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 47 [2023-11-21 22:21:25,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:25,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 47 [2023-11-21 22:21:25,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:25,979 INFO L124 PetriNetUnfolderBase]: 124/278 cut-off events. [2023-11-21 22:21:25,980 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-21 22:21:25,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 278 events. 124/278 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1161 event pairs, 124 based on Foata normal form. 11/268 useless extension candidates. Maximal degree in co-relation 506. Up to 217 conditions per place. [2023-11-21 22:21:25,984 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 16 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-21 22:21:25,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 31 transitions, 107 flow [2023-11-21 22:21:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:25,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2023-11-21 22:21:25,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6879432624113475 [2023-11-21 22:21:25,989 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 97 transitions. [2023-11-21 22:21:25,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 97 transitions. [2023-11-21 22:21:25,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:25,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 97 transitions. [2023-11-21 22:21:25,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,992 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 77 flow. Second operand 3 states and 97 transitions. [2023-11-21 22:21:25,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 31 transitions, 107 flow [2023-11-21 22:21:25,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:25,995 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 74 flow [2023-11-21 22:21:25,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-21 22:21:25,998 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2023-11-21 22:21:25,998 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 74 flow [2023-11-21 22:21:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:25,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:25,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:25,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:21:26,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:26,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1396420763, now seen corresponding path program 1 times [2023-11-21 22:21:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529540469] [2023-11-21 22:21:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:26,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529540469] [2023-11-21 22:21:26,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529540469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:26,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:26,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:21:26,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785626534] [2023-11-21 22:21:26,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:26,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:21:26,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:21:26,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:21:26,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2023-11-21 22:21:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:26,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2023-11-21 22:21:26,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:26,253 INFO L124 PetriNetUnfolderBase]: 138/288 cut-off events. [2023-11-21 22:21:26,253 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-21 22:21:26,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 288 events. 138/288 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1163 event pairs, 138 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 542. Up to 243 conditions per place. [2023-11-21 22:21:26,259 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 18 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-11-21 22:21:26,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 29 transitions, 108 flow [2023-11-21 22:21:26,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:21:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:21:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-21 22:21:26,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2023-11-21 22:21:26,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-21 22:21:26,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-21 22:21:26,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:26,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-21 22:21:26,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,264 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 74 flow. Second operand 3 states and 93 transitions. [2023-11-21 22:21:26,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 29 transitions, 108 flow [2023-11-21 22:21:26,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 29 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:26,266 INFO L231 Difference]: Finished difference. Result has 40 places, 29 transitions, 71 flow [2023-11-21 22:21:26,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=40, PETRI_TRANSITIONS=29} [2023-11-21 22:21:26,267 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -13 predicate places. [2023-11-21 22:21:26,267 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 29 transitions, 71 flow [2023-11-21 22:21:26,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:26,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:26,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:26,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:21:26,268 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:26,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash -129028812, now seen corresponding path program 1 times [2023-11-21 22:21:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978329161] [2023-11-21 22:21:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:29,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:29,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:29,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978329161] [2023-11-21 22:21:29,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978329161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:29,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:29,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:29,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118732498] [2023-11-21 22:21:29,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:29,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:29,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:29,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:29,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 29 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:29,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:29,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:29,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:30,431 INFO L124 PetriNetUnfolderBase]: 190/380 cut-off events. [2023-11-21 22:21:30,431 INFO L125 PetriNetUnfolderBase]: For 23/24 co-relation queries the response was YES. [2023-11-21 22:21:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 380 events. 190/380 cut-off events. For 23/24 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1584 event pairs, 24 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 744. Up to 151 conditions per place. [2023-11-21 22:21:30,434 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 34 selfloop transitions, 6 changer transitions 10/62 dead transitions. [2023-11-21 22:21:30,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 247 flow [2023-11-21 22:21:30,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2023-11-21 22:21:30,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.776595744680851 [2023-11-21 22:21:30,437 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 219 transitions. [2023-11-21 22:21:30,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 219 transitions. [2023-11-21 22:21:30,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:30,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 219 transitions. [2023-11-21 22:21:30,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,441 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,441 INFO L175 Difference]: Start difference. First operand has 40 places, 29 transitions, 71 flow. Second operand 6 states and 219 transitions. [2023-11-21 22:21:30,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 247 flow [2023-11-21 22:21:30,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:30,444 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 103 flow [2023-11-21 22:21:30,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-11-21 22:21:30,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2023-11-21 22:21:30,446 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 103 flow [2023-11-21 22:21:30,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:30,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:30,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:30,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:21:30,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:30,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash -227465584, now seen corresponding path program 2 times [2023-11-21 22:21:30,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:30,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652643385] [2023-11-21 22:21:30,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:30,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:33,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652643385] [2023-11-21 22:21:33,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652643385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:33,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535158713] [2023-11-21 22:21:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:33,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:33,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:33,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:33,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:33,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:33,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:33,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:34,160 INFO L124 PetriNetUnfolderBase]: 215/464 cut-off events. [2023-11-21 22:21:34,160 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-11-21 22:21:34,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 464 events. 215/464 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2156 event pairs, 26 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 1007. Up to 231 conditions per place. [2023-11-21 22:21:34,164 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 32 selfloop transitions, 5 changer transitions 11/60 dead transitions. [2023-11-21 22:21:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 271 flow [2023-11-21 22:21:34,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2023-11-21 22:21:34,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7695035460992907 [2023-11-21 22:21:34,167 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 217 transitions. [2023-11-21 22:21:34,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 217 transitions. [2023-11-21 22:21:34,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:34,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 217 transitions. [2023-11-21 22:21:34,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,170 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 103 flow. Second operand 6 states and 217 transitions. [2023-11-21 22:21:34,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 271 flow [2023-11-21 22:21:34,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 267 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-21 22:21:34,175 INFO L231 Difference]: Finished difference. Result has 53 places, 33 transitions, 121 flow [2023-11-21 22:21:34,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=121, PETRI_PLACES=53, PETRI_TRANSITIONS=33} [2023-11-21 22:21:34,178 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2023-11-21 22:21:34,179 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 33 transitions, 121 flow [2023-11-21 22:21:34,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:34,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:34,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:34,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:21:34,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:34,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:34,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1498554184, now seen corresponding path program 3 times [2023-11-21 22:21:34,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453274450] [2023-11-21 22:21:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:34,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:36,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:36,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453274450] [2023-11-21 22:21:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453274450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:36,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:36,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555528183] [2023-11-21 22:21:36,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:36,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:36,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:36,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:36,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:36,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 33 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:36,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:36,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:37,458 INFO L124 PetriNetUnfolderBase]: 142/304 cut-off events. [2023-11-21 22:21:37,458 INFO L125 PetriNetUnfolderBase]: For 273/273 co-relation queries the response was YES. [2023-11-21 22:21:37,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 304 events. 142/304 cut-off events. For 273/273 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1193 event pairs, 9 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 722. Up to 93 conditions per place. [2023-11-21 22:21:37,461 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 30 selfloop transitions, 6 changer transitions 10/58 dead transitions. [2023-11-21 22:21:37,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 279 flow [2023-11-21 22:21:37,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:37,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2023-11-21 22:21:37,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7588652482269503 [2023-11-21 22:21:37,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 214 transitions. [2023-11-21 22:21:37,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 214 transitions. [2023-11-21 22:21:37,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:37,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 214 transitions. [2023-11-21 22:21:37,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,466 INFO L175 Difference]: Start difference. First operand has 53 places, 33 transitions, 121 flow. Second operand 6 states and 214 transitions. [2023-11-21 22:21:37,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 279 flow [2023-11-21 22:21:37,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 257 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-21 22:21:37,473 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 123 flow [2023-11-21 22:21:37,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-11-21 22:21:37,475 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-21 22:21:37,475 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 123 flow [2023-11-21 22:21:37,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:37,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:37,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:37,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:21:37,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:37,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:37,476 INFO L85 PathProgramCache]: Analyzing trace with hash -880636486, now seen corresponding path program 4 times [2023-11-21 22:21:37,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:37,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145386292] [2023-11-21 22:21:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:37,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145386292] [2023-11-21 22:21:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145386292] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:39,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:39,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751424278] [2023-11-21 22:21:39,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:39,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:39,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:39,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:39,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:39,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:39,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:39,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:40,311 INFO L124 PetriNetUnfolderBase]: 143/333 cut-off events. [2023-11-21 22:21:40,311 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-21 22:21:40,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 333 events. 143/333 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1389 event pairs, 30 based on Foata normal form. 1/332 useless extension candidates. Maximal degree in co-relation 784. Up to 178 conditions per place. [2023-11-21 22:21:40,314 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 20 selfloop transitions, 4 changer transitions 15/51 dead transitions. [2023-11-21 22:21:40,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 249 flow [2023-11-21 22:21:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:40,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2023-11-21 22:21:40,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7340425531914894 [2023-11-21 22:21:40,316 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 207 transitions. [2023-11-21 22:21:40,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 207 transitions. [2023-11-21 22:21:40,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:40,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 207 transitions. [2023-11-21 22:21:40,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,319 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,319 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 123 flow. Second operand 6 states and 207 transitions. [2023-11-21 22:21:40,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 249 flow [2023-11-21 22:21:40,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 22:21:40,323 INFO L231 Difference]: Finished difference. Result has 57 places, 31 transitions, 117 flow [2023-11-21 22:21:40,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=117, PETRI_PLACES=57, PETRI_TRANSITIONS=31} [2023-11-21 22:21:40,325 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2023-11-21 22:21:40,325 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 31 transitions, 117 flow [2023-11-21 22:21:40,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:40,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:40,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:21:40,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:40,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1522498776, now seen corresponding path program 5 times [2023-11-21 22:21:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737827436] [2023-11-21 22:21:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:43,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:43,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737827436] [2023-11-21 22:21:43,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737827436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:43,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:43,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595295246] [2023-11-21 22:21:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:43,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:43,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:43,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:43,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 31 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:43,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:43,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:43,888 INFO L124 PetriNetUnfolderBase]: 79/183 cut-off events. [2023-11-21 22:21:43,889 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-11-21 22:21:43,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 183 events. 79/183 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 563 event pairs, 5 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 448. Up to 71 conditions per place. [2023-11-21 22:21:43,891 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 19 selfloop transitions, 3 changer transitions 9/43 dead transitions. [2023-11-21 22:21:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 207 flow [2023-11-21 22:21:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2023-11-21 22:21:43,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7056737588652482 [2023-11-21 22:21:43,893 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 199 transitions. [2023-11-21 22:21:43,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 199 transitions. [2023-11-21 22:21:43,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:43,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 199 transitions. [2023-11-21 22:21:43,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 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) [2023-11-21 22:21:43,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,895 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,896 INFO L175 Difference]: Start difference. First operand has 57 places, 31 transitions, 117 flow. Second operand 6 states and 199 transitions. [2023-11-21 22:21:43,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 207 flow [2023-11-21 22:21:43,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 43 transitions, 191 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-21 22:21:43,898 INFO L231 Difference]: Finished difference. Result has 54 places, 29 transitions, 93 flow [2023-11-21 22:21:43,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=93, PETRI_PLACES=54, PETRI_TRANSITIONS=29} [2023-11-21 22:21:43,899 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-11-21 22:21:43,899 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 29 transitions, 93 flow [2023-11-21 22:21:43,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:43,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:21:43,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:43,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:21:43,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-21 22:21:43,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:21:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1568357196, now seen corresponding path program 6 times [2023-11-21 22:21:43,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:21:43,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119422820] [2023-11-21 22:21:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:21:43,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:21:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:21:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:21:45,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:21:45,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119422820] [2023-11-21 22:21:45,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119422820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:21:45,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:21:45,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:21:45,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520832744] [2023-11-21 22:21:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:21:45,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:21:45,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:21:45,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:21:45,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:21:45,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 47 [2023-11-21 22:21:45,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 29 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:45,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:21:45,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 47 [2023-11-21 22:21:45,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:21:46,034 INFO L124 PetriNetUnfolderBase]: 42/101 cut-off events. [2023-11-21 22:21:46,034 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2023-11-21 22:21:46,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 101 events. 42/101 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 217 event pairs, 0 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 255. Up to 54 conditions per place. [2023-11-21 22:21:46,035 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-21 22:21:46,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 34 transitions, 148 flow [2023-11-21 22:21:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:21:46,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:21:46,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2023-11-21 22:21:46,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2023-11-21 22:21:46,038 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 192 transitions. [2023-11-21 22:21:46,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 192 transitions. [2023-11-21 22:21:46,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:21:46,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 192 transitions. [2023-11-21 22:21:46,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,040 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,040 INFO L175 Difference]: Start difference. First operand has 54 places, 29 transitions, 93 flow. Second operand 6 states and 192 transitions. [2023-11-21 22:21:46,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 34 transitions, 148 flow [2023-11-21 22:21:46,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 34 transitions, 137 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-21 22:21:46,042 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-21 22:21:46,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-21 22:21:46,043 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-11-21 22:21:46,044 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-21 22:21:46,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:21:46,046 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-21 22:21:46,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-21 22:21:46,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-21 22:21:46,047 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-21 22:21:46,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-21 22:21:46,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-21 22:21:46,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-21 22:21:46,048 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-21 22:21:46,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-21 22:21:46,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-21 22:21:46,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-21 22:21:46,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-21 22:21:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-21 22:21:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-21 22:21:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-21 22:21:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-21 22:21:46,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-21 22:21:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:21:46,052 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2023-11-21 22:21:46,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:21:46,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:21:46,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:21:46 BasicIcfg [2023-11-21 22:21:46,063 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:21:46,064 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:21:46,064 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:21:46,064 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:21:46,064 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:21:23" (3/4) ... [2023-11-21 22:21:46,066 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:21:46,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-21 22:21:46,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-21 22:21:46,070 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-21 22:21:46,079 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 109 nodes and edges [2023-11-21 22:21:46,080 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-21 22:21:46,080 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 22:21:46,081 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:21:46,197 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:21:46,198 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:21:46,198 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:21:46,198 INFO L158 Benchmark]: Toolchain (without parser) took 25268.56ms. Allocated memory was 132.1MB in the beginning and 612.4MB in the end (delta: 480.2MB). Free memory was 96.6MB in the beginning and 216.8MB in the end (delta: -120.2MB). Peak memory consumption was 362.4MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,199 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:21:46,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.65ms. Allocated memory is still 132.1MB. Free memory was 96.6MB in the beginning and 84.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,199 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.60ms. Allocated memory is still 132.1MB. Free memory was 84.4MB in the beginning and 81.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,200 INFO L158 Benchmark]: Boogie Preprocessor took 44.88ms. Allocated memory is still 132.1MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,200 INFO L158 Benchmark]: RCFGBuilder took 1716.83ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 79.1MB in the beginning and 108.3MB in the end (delta: -29.2MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,200 INFO L158 Benchmark]: TraceAbstraction took 22865.59ms. Allocated memory was 172.0MB in the beginning and 612.4MB in the end (delta: 440.4MB). Free memory was 107.2MB in the beginning and 223.1MB in the end (delta: -115.9MB). Peak memory consumption was 324.5MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,201 INFO L158 Benchmark]: Witness Printer took 134.34ms. Allocated memory is still 612.4MB. Free memory was 223.1MB in the beginning and 216.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:21:46,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 103.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.65ms. Allocated memory is still 132.1MB. Free memory was 96.6MB in the beginning and 84.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.60ms. Allocated memory is still 132.1MB. Free memory was 84.4MB in the beginning and 81.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.88ms. Allocated memory is still 132.1MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1716.83ms. Allocated memory was 132.1MB in the beginning and 172.0MB in the end (delta: 39.8MB). Free memory was 79.1MB in the beginning and 108.3MB in the end (delta: -29.2MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22865.59ms. Allocated memory was 172.0MB in the beginning and 612.4MB in the end (delta: 440.4MB). Free memory was 107.2MB in the beginning and 223.1MB in the end (delta: -115.9MB). Peak memory consumption was 324.5MB. Max. memory is 16.1GB. * Witness Printer took 134.34ms. Allocated memory is still 612.4MB. Free memory was 223.1MB in the beginning and 216.8MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 63 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.7s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 485 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 330 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 734 IncrementalHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 29 mSDtfsCounter, 734 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=9, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.2s InterpolantComputationTime, 204 NumberOfCodeBlocks, 204 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 4675 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:21:46,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ce83cf4-30ca-411e-b660-b6f5c014d365/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE