./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:34:36,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:34:36,446 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:34:36,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:34:36,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:34:36,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:34:36,504 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:34:36,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:34:36,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:34:36,512 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:34:36,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:34:36,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:34:36,515 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:34:36,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:34:36,517 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:34:36,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:34:36,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:34:36,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:34:36,519 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:34:36,520 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:34:36,520 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:34:36,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:34:36,521 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:34:36,522 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:34:36,522 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:34:36,523 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:34:36,524 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:34:36,524 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:34:36,525 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:34:36,525 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:36,526 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:34:36,526 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:34:36,527 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:34:36,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:34:36,528 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:34:36,528 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:34:36,528 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:34:36,529 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:34:36,529 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_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e30b67a045ce6921ac9aa6cdcebddb50c3d7d787a6b9dd7b66c9173f916fde4 [2023-11-06 22:34:36,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:34:36,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:34:36,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:34:36,931 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:34:36,932 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:34:36,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-06 22:34:40,087 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:34:40,382 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:34:40,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/sv-benchmarks/c/pthread/triangular-longer-1.i [2023-11-06 22:34:40,406 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/data/16a834fa3/a61cbe817712462eac229f614a2f25b3/FLAGccb1eab92 [2023-11-06 22:34:40,428 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/data/16a834fa3/a61cbe817712462eac229f614a2f25b3 [2023-11-06 22:34:40,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:34:40,438 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:34:40,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:40,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:34:40,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:34:40,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:40" (1/1) ... [2023-11-06 22:34:40,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c159ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:40, skipping insertion in model container [2023-11-06 22:34:40,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:34:40" (1/1) ... [2023-11-06 22:34:40,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:34:40,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:40,977 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:34:41,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:34:41,048 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:34:41,048 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:34:41,056 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:34:41,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41 WrapperNode [2023-11-06 22:34:41,057 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:34:41,058 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:41,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:34:41,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:34:41,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,122 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-06 22:34:41,122 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:34:41,123 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:34:41,123 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:34:41,124 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:34:41,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,142 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,176 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,179 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:34:41,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:34:41,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:34:41,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:34:41,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (1/1) ... [2023-11-06 22:34:41,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:34:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:41,225 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:34:41,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:34:41,273 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-06 22:34:41,274 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-06 22:34:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-06 22:34:41,275 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-06 22:34:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:34:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:34:41,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:34:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:34:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:34:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:34:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:34:41,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:34:41,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:34:41,306 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:34:41,534 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:34:41,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:34:41,715 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:34:41,723 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:34:41,724 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:34:41,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:41 BoogieIcfgContainer [2023-11-06 22:34:41,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:34:41,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:34:41,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:34:41,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:34:41,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:34:40" (1/3) ... [2023-11-06 22:34:41,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47788960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:41, skipping insertion in model container [2023-11-06 22:34:41,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:34:41" (2/3) ... [2023-11-06 22:34:41,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47788960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:34:41, skipping insertion in model container [2023-11-06 22:34:41,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:41" (3/3) ... [2023-11-06 22:34:41,737 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-1.i [2023-11-06 22:34:41,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:34:41,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-06 22:34:41,760 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:34:41,821 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:34:41,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 82 transitions, 172 flow [2023-11-06 22:34:41,920 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-06 22:34:41,921 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:34:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-06 22:34:41,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 82 transitions, 172 flow [2023-11-06 22:34:41,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 166 flow [2023-11-06 22:34:41,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:34:41,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-06 22:34:41,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 80 transitions, 166 flow [2023-11-06 22:34:41,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 166 flow [2023-11-06 22:34:41,978 INFO L124 PetriNetUnfolderBase]: 6/80 cut-off events. [2023-11-06 22:34:41,978 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:34:41,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 80 events. 6/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2023-11-06 22:34:41,982 INFO L119 LiptonReduction]: Number of co-enabled transitions 1728 [2023-11-06 22:34:44,903 INFO L134 LiptonReduction]: Checked pairs total: 1540 [2023-11-06 22:34:44,903 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-11-06 22:34:44,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:34:44,947 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;@340174cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:34:44,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-06 22:34:44,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:34:44,951 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:34:44,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:34:44,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:44,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:34:44,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:44,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 330, now seen corresponding path program 1 times [2023-11-06 22:34:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:44,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587869841] [2023-11-06 22:34:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:45,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:45,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587869841] [2023-11-06 22:34:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587869841] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:34:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686506599] [2023-11-06 22:34:45,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:34:45,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:45,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:34:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:34:45,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 167 [2023-11-06 22:34:45,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 46 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:45,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 167 [2023-11-06 22:34:45,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:45,260 INFO L124 PetriNetUnfolderBase]: 112/179 cut-off events. [2023-11-06 22:34:45,260 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:34:45,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 179 events. 112/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 457 event pairs, 72 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 360. Up to 180 conditions per place. [2023-11-06 22:34:45,264 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 16 selfloop transitions, 0 changer transitions 1/17 dead transitions. [2023-11-06 22:34:45,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 74 flow [2023-11-06 22:34:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:34:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:34:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 170 transitions. [2023-11-06 22:34:45,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089820359281437 [2023-11-06 22:34:45,281 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 170 transitions. [2023-11-06 22:34:45,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 170 transitions. [2023-11-06 22:34:45,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:45,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 170 transitions. [2023-11-06 22:34:45,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 85.0) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,300 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,302 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 46 flow. Second operand 2 states and 170 transitions. [2023-11-06 22:34:45,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 74 flow [2023-11-06 22:34:45,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:34:45,307 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 36 flow [2023-11-06 22:34:45,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=36, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-06 22:34:45,317 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:34:45,318 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 36 flow [2023-11-06 22:34:45,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:45,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:34:45,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:34:45,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:45,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash 325970, now seen corresponding path program 1 times [2023-11-06 22:34:45,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:45,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202839056] [2023-11-06 22:34:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:45,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:45,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:45,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202839056] [2023-11-06 22:34:45,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202839056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:45,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:45,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:34:45,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923135273] [2023-11-06 22:34:45,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:45,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:45,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:45,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:45,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:45,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:45,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:45,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:45,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:45,730 INFO L124 PetriNetUnfolderBase]: 91/146 cut-off events. [2023-11-06 22:34:45,730 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:34:45,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 146 events. 91/146 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 355 event pairs, 34 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 300. Up to 92 conditions per place. [2023-11-06 22:34:45,733 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-11-06 22:34:45,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 88 flow [2023-11-06 22:34:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:34:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-11-06 22:34:45,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44510978043912175 [2023-11-06 22:34:45,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-11-06 22:34:45,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-11-06 22:34:45,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:45,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-11-06 22:34:45,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,744 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 36 flow. Second operand 3 states and 223 transitions. [2023-11-06 22:34:45,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 88 flow [2023-11-06 22:34:45,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:34:45,745 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 38 flow [2023-11-06 22:34:45,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-06 22:34:45,747 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2023-11-06 22:34:45,747 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 38 flow [2023-11-06 22:34:45,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:45,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:34:45,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:34:45,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:45,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash 325968, now seen corresponding path program 1 times [2023-11-06 22:34:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919334598] [2023-11-06 22:34:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:45,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:45,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:45,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919334598] [2023-11-06 22:34:45,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919334598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:45,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:45,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:34:45,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640175512] [2023-11-06 22:34:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:45,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:45,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:45,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:45,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-06 22:34:45,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:45,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-06 22:34:45,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:45,979 INFO L124 PetriNetUnfolderBase]: 88/140 cut-off events. [2023-11-06 22:34:45,979 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:34:45,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 140 events. 88/140 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 331 event pairs, 44 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 298. Up to 113 conditions per place. [2023-11-06 22:34:45,982 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 18 selfloop transitions, 2 changer transitions 0/20 dead transitions. [2023-11-06 22:34:45,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 88 flow [2023-11-06 22:34:45,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:34:45,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-06 22:34:45,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46107784431137727 [2023-11-06 22:34:45,988 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-06 22:34:45,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-06 22:34:45,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:45,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-06 22:34:45,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 167.0) internal successors, (668), 4 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,994 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 38 flow. Second operand 3 states and 231 transitions. [2023-11-06 22:34:45,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 88 flow [2023-11-06 22:34:45,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:34:45,995 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-11-06 22:34:45,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-11-06 22:34:45,997 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, -4 predicate places. [2023-11-06 22:34:45,997 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-11-06 22:34:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:45,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:45,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:34:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:34:45,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:45,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:45,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1121223677, now seen corresponding path program 1 times [2023-11-06 22:34:45,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:45,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717167489] [2023-11-06 22:34:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717167489] [2023-11-06 22:34:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717167489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:46,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:46,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:34:46,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968578954] [2023-11-06 22:34:46,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:46,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 167 [2023-11-06 22:34:46,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:46,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 167 [2023-11-06 22:34:46,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:46,338 INFO L124 PetriNetUnfolderBase]: 176/281 cut-off events. [2023-11-06 22:34:46,338 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:34:46,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 281 events. 176/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 886 event pairs, 12 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 598. Up to 128 conditions per place. [2023-11-06 22:34:46,348 INFO L140 encePairwiseOnDemand]: 161/167 looper letters, 31 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2023-11-06 22:34:46,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 39 transitions, 170 flow [2023-11-06 22:34:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:46,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:34:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2023-11-06 22:34:46,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562874251497006 [2023-11-06 22:34:46,354 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 381 transitions. [2023-11-06 22:34:46,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 381 transitions. [2023-11-06 22:34:46,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:46,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 381 transitions. [2023-11-06 22:34:46,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.2) internal successors, (381), 5 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,365 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 5 states and 381 transitions. [2023-11-06 22:34:46,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 39 transitions, 170 flow [2023-11-06 22:34:46,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 39 transitions, 162 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:34:46,370 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 92 flow [2023-11-06 22:34:46,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-06 22:34:46,372 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2023-11-06 22:34:46,372 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 92 flow [2023-11-06 22:34:46,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.5) internal successors, (278), 4 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:46,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:46,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:34:46,374 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:46,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:46,375 INFO L85 PathProgramCache]: Analyzing trace with hash 398196105, now seen corresponding path program 1 times [2023-11-06 22:34:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:46,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091427742] [2023-11-06 22:34:46,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091427742] [2023-11-06 22:34:46,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091427742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:46,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:46,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:34:46,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186104035] [2023-11-06 22:34:46,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:34:46,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:34:46,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:34:46,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 167 [2023-11-06 22:34:46,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:46,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 167 [2023-11-06 22:34:46,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:46,766 INFO L124 PetriNetUnfolderBase]: 130/212 cut-off events. [2023-11-06 22:34:46,766 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-06 22:34:46,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 212 events. 130/212 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 627 event pairs, 47 based on Foata normal form. 23/235 useless extension candidates. Maximal degree in co-relation 611. Up to 143 conditions per place. [2023-11-06 22:34:46,769 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 17 selfloop transitions, 1 changer transitions 11/29 dead transitions. [2023-11-06 22:34:46,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 29 transitions, 184 flow [2023-11-06 22:34:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:34:46,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:34:46,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2023-11-06 22:34:46,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41916167664670656 [2023-11-06 22:34:46,771 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 280 transitions. [2023-11-06 22:34:46,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 280 transitions. [2023-11-06 22:34:46,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:46,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 280 transitions. [2023-11-06 22:34:46,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 70.0) internal successors, (280), 4 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,776 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,776 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 92 flow. Second operand 4 states and 280 transitions. [2023-11-06 22:34:46,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 29 transitions, 184 flow [2023-11-06 22:34:46,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:34:46,792 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 82 flow [2023-11-06 22:34:46,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-11-06 22:34:46,797 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 4 predicate places. [2023-11-06 22:34:46,797 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 82 flow [2023-11-06 22:34:46,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.75) internal successors, (267), 4 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:46,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:46,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:34:46,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:46,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:46,800 INFO L85 PathProgramCache]: Analyzing trace with hash -507843160, now seen corresponding path program 1 times [2023-11-06 22:34:46,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:46,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19843145] [2023-11-06 22:34:46,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:46,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:46,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:46,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19843145] [2023-11-06 22:34:46,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19843145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:46,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:46,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049013197] [2023-11-06 22:34:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:47,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:47,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:47,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:47,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:47,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:47,100 INFO L124 PetriNetUnfolderBase]: 92/157 cut-off events. [2023-11-06 22:34:47,100 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-06 22:34:47,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 157 events. 92/157 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 446 event pairs, 19 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 450. Up to 61 conditions per place. [2023-11-06 22:34:47,102 INFO L140 encePairwiseOnDemand]: 163/167 looper letters, 20 selfloop transitions, 8 changer transitions 2/30 dead transitions. [2023-11-06 22:34:47,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 180 flow [2023-11-06 22:34:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:34:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:34:47,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 293 transitions. [2023-11-06 22:34:47,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43862275449101795 [2023-11-06 22:34:47,105 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 293 transitions. [2023-11-06 22:34:47,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 293 transitions. [2023-11-06 22:34:47,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:47,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 293 transitions. [2023-11-06 22:34:47,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,111 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,111 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 82 flow. Second operand 4 states and 293 transitions. [2023-11-06 22:34:47,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 180 flow [2023-11-06 22:34:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:34:47,116 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 120 flow [2023-11-06 22:34:47,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-06 22:34:47,120 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2023-11-06 22:34:47,124 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 120 flow [2023-11-06 22:34:47,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:47,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:47,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:34:47,126 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:47,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash -541296717, now seen corresponding path program 1 times [2023-11-06 22:34:47,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:47,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355981107] [2023-11-06 22:34:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:47,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:47,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355981107] [2023-11-06 22:34:47,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355981107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:47,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011118822] [2023-11-06 22:34:47,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:47,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:47,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:47,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:47,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:47,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:47,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:47,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:47,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:47,454 INFO L124 PetriNetUnfolderBase]: 132/229 cut-off events. [2023-11-06 22:34:47,454 INFO L125 PetriNetUnfolderBase]: For 291/291 co-relation queries the response was YES. [2023-11-06 22:34:47,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 229 events. 132/229 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 718 event pairs, 23 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 749. Up to 101 conditions per place. [2023-11-06 22:34:47,457 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 34 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2023-11-06 22:34:47,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 45 transitions, 302 flow [2023-11-06 22:34:47,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:34:47,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:34:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 440 transitions. [2023-11-06 22:34:47,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43912175648702595 [2023-11-06 22:34:47,460 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 440 transitions. [2023-11-06 22:34:47,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 440 transitions. [2023-11-06 22:34:47,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:47,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 440 transitions. [2023-11-06 22:34:47,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 73.33333333333333) internal successors, (440), 6 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,469 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 167.0) internal successors, (1169), 7 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,469 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 120 flow. Second operand 6 states and 440 transitions. [2023-11-06 22:34:47,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 45 transitions, 302 flow [2023-11-06 22:34:47,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 286 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-06 22:34:47,477 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 204 flow [2023-11-06 22:34:47,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=204, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2023-11-06 22:34:47,479 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 13 predicate places. [2023-11-06 22:34:47,479 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 204 flow [2023-11-06 22:34:47,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:47,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:47,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:34:47,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:47,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:47,482 INFO L85 PathProgramCache]: Analyzing trace with hash -541273467, now seen corresponding path program 2 times [2023-11-06 22:34:47,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:47,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619755048] [2023-11-06 22:34:47,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:47,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:47,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:47,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:47,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619755048] [2023-11-06 22:34:47,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619755048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:47,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:47,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:47,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139859491] [2023-11-06 22:34:47,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:47,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:34:47,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:34:47,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:34:47,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:47,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:47,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:47,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:47,768 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-06 22:34:47,768 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-06 22:34:47,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 199 events. 114/199 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 632 event pairs, 23 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 762. Up to 84 conditions per place. [2023-11-06 22:34:47,771 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 29 selfloop transitions, 11 changer transitions 4/44 dead transitions. [2023-11-06 22:34:47,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 350 flow [2023-11-06 22:34:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:34:47,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:34:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-11-06 22:34:47,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407185628742515 [2023-11-06 22:34:47,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-11-06 22:34:47,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-11-06 22:34:47,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:47,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-11-06 22:34:47,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,779 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,779 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 204 flow. Second operand 5 states and 368 transitions. [2023-11-06 22:34:47,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 350 flow [2023-11-06 22:34:47,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 44 transitions, 336 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-06 22:34:47,784 INFO L231 Difference]: Finished difference. Result has 43 places, 29 transitions, 237 flow [2023-11-06 22:34:47,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=43, PETRI_TRANSITIONS=29} [2023-11-06 22:34:47,785 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 19 predicate places. [2023-11-06 22:34:47,785 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 29 transitions, 237 flow [2023-11-06 22:34:47,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.6) internal successors, (343), 5 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:47,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:47,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:34:47,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:47,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1548318116, now seen corresponding path program 1 times [2023-11-06 22:34:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:47,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928328459] [2023-11-06 22:34:47,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:47,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:47,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:47,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928328459] [2023-11-06 22:34:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928328459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:47,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:34:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756377007] [2023-11-06 22:34:47,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:47,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:34:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:47,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:34:47,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:34:47,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:47,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 29 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:47,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:47,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:47,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:48,088 INFO L124 PetriNetUnfolderBase]: 150/263 cut-off events. [2023-11-06 22:34:48,089 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-06 22:34:48,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 263 events. 150/263 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 864 event pairs, 20 based on Foata normal form. 8/271 useless extension candidates. Maximal degree in co-relation 1079. Up to 73 conditions per place. [2023-11-06 22:34:48,092 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 35 selfloop transitions, 20 changer transitions 3/58 dead transitions. [2023-11-06 22:34:48,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 497 flow [2023-11-06 22:34:48,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:34:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:34:48,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 582 transitions. [2023-11-06 22:34:48,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356287425149701 [2023-11-06 22:34:48,096 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 582 transitions. [2023-11-06 22:34:48,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 582 transitions. [2023-11-06 22:34:48,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:48,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 582 transitions. [2023-11-06 22:34:48,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.75) internal successors, (582), 8 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,103 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,103 INFO L175 Difference]: Start difference. First operand has 43 places, 29 transitions, 237 flow. Second operand 8 states and 582 transitions. [2023-11-06 22:34:48,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 497 flow [2023-11-06 22:34:48,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 458 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 22:34:48,109 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 337 flow [2023-11-06 22:34:48,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-06 22:34:48,110 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 26 predicate places. [2023-11-06 22:34:48,111 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 337 flow [2023-11-06 22:34:48,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:48,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:34:48,112 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:48,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:48,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1588559216, now seen corresponding path program 2 times [2023-11-06 22:34:48,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:48,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108991979] [2023-11-06 22:34:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108991979] [2023-11-06 22:34:48,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108991979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:48,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:48,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:34:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563271339] [2023-11-06 22:34:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:48,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:34:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:34:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:34:48,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:48,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:48,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:48,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:48,434 INFO L124 PetriNetUnfolderBase]: 146/255 cut-off events. [2023-11-06 22:34:48,434 INFO L125 PetriNetUnfolderBase]: For 1357/1357 co-relation queries the response was YES. [2023-11-06 22:34:48,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 255 events. 146/255 cut-off events. For 1357/1357 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 844 event pairs, 18 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 1193. Up to 75 conditions per place. [2023-11-06 22:34:48,438 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 28 selfloop transitions, 22 changer transitions 10/60 dead transitions. [2023-11-06 22:34:48,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 603 flow [2023-11-06 22:34:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:34:48,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:34:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 581 transitions. [2023-11-06 22:34:48,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43488023952095806 [2023-11-06 22:34:48,443 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 581 transitions. [2023-11-06 22:34:48,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 581 transitions. [2023-11-06 22:34:48,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:48,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 581 transitions. [2023-11-06 22:34:48,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 72.625) internal successors, (581), 8 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,451 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 167.0) internal successors, (1503), 9 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,451 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 337 flow. Second operand 8 states and 581 transitions. [2023-11-06 22:34:48,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 603 flow [2023-11-06 22:34:48,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 552 flow, removed 17 selfloop flow, removed 3 redundant places. [2023-11-06 22:34:48,462 INFO L231 Difference]: Finished difference. Result has 57 places, 38 transitions, 396 flow [2023-11-06 22:34:48,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=396, PETRI_PLACES=57, PETRI_TRANSITIONS=38} [2023-11-06 22:34:48,463 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2023-11-06 22:34:48,463 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 38 transitions, 396 flow [2023-11-06 22:34:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:48,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:48,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:34:48,465 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:48,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 726265661, now seen corresponding path program 3 times [2023-11-06 22:34:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:48,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38928436] [2023-11-06 22:34:48,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:48,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38928436] [2023-11-06 22:34:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38928436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:48,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393302829] [2023-11-06 22:34:48,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:34:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:48,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:48,620 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:48,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:34:48,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:34:48,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:48,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:34:48,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:48,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393302829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:49,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:49,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-06 22:34:49,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432268775] [2023-11-06 22:34:49,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:49,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:34:49,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:49,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:34:49,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:34:49,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:49,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 38 transitions, 396 flow. Second operand has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:49,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:49,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:49,366 INFO L124 PetriNetUnfolderBase]: 170/303 cut-off events. [2023-11-06 22:34:49,366 INFO L125 PetriNetUnfolderBase]: For 2376/2376 co-relation queries the response was YES. [2023-11-06 22:34:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 303 events. 170/303 cut-off events. For 2376/2376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 994 event pairs, 35 based on Foata normal form. 24/327 useless extension candidates. Maximal degree in co-relation 1500. Up to 161 conditions per place. [2023-11-06 22:34:49,371 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 42 selfloop transitions, 17 changer transitions 19/78 dead transitions. [2023-11-06 22:34:49,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 818 flow [2023-11-06 22:34:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:34:49,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:34:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 869 transitions. [2023-11-06 22:34:49,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363273453093815 [2023-11-06 22:34:49,376 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 869 transitions. [2023-11-06 22:34:49,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 869 transitions. [2023-11-06 22:34:49,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:49,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 869 transitions. [2023-11-06 22:34:49,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 72.41666666666667) internal successors, (869), 12 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,386 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 167.0) internal successors, (2171), 13 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,386 INFO L175 Difference]: Start difference. First operand has 57 places, 38 transitions, 396 flow. Second operand 12 states and 869 transitions. [2023-11-06 22:34:49,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 818 flow [2023-11-06 22:34:49,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 769 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-06 22:34:49,398 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 507 flow [2023-11-06 22:34:49,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=507, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2023-11-06 22:34:49,399 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 45 predicate places. [2023-11-06 22:34:49,399 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 507 flow [2023-11-06 22:34:49,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 68.91666666666667) internal successors, (827), 12 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:49,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:49,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:49,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:34:49,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:49,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:49,608 INFO L85 PathProgramCache]: Analyzing trace with hash 748608911, now seen corresponding path program 4 times [2023-11-06 22:34:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:49,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344721596] [2023-11-06 22:34:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344721596] [2023-11-06 22:34:49,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344721596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:49,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857332443] [2023-11-06 22:34:49,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:34:49,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:49,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:49,755 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:49,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:34:49,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:34:49,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:49,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:34:49,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:49,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:50,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857332443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:50,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:50,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:34:50,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157123513] [2023-11-06 22:34:50,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:50,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:34:50,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:50,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:34:50,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:34:50,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:50,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 507 flow. Second operand has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:50,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:50,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:50,554 INFO L124 PetriNetUnfolderBase]: 244/439 cut-off events. [2023-11-06 22:34:50,555 INFO L125 PetriNetUnfolderBase]: For 6604/6604 co-relation queries the response was YES. [2023-11-06 22:34:50,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2537 conditions, 439 events. 244/439 cut-off events. For 6604/6604 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1683 event pairs, 28 based on Foata normal form. 28/467 useless extension candidates. Maximal degree in co-relation 2508. Up to 134 conditions per place. [2023-11-06 22:34:50,561 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 42 changer transitions 29/117 dead transitions. [2023-11-06 22:34:50,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1396 flow [2023-11-06 22:34:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:34:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:34:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1303 transitions. [2023-11-06 22:34:50,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4334664005322688 [2023-11-06 22:34:50,569 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1303 transitions. [2023-11-06 22:34:50,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1303 transitions. [2023-11-06 22:34:50,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:50,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1303 transitions. [2023-11-06 22:34:50,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.38888888888889) internal successors, (1303), 18 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,584 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,585 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 507 flow. Second operand 18 states and 1303 transitions. [2023-11-06 22:34:50,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1396 flow [2023-11-06 22:34:50,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 117 transitions, 1282 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-06 22:34:50,612 INFO L231 Difference]: Finished difference. Result has 92 places, 64 transitions, 912 flow [2023-11-06 22:34:50,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=912, PETRI_PLACES=92, PETRI_TRANSITIONS=64} [2023-11-06 22:34:50,613 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 68 predicate places. [2023-11-06 22:34:50,614 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 64 transitions, 912 flow [2023-11-06 22:34:50,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 68.92307692307692) internal successors, (896), 13 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:50,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:50,615 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:50,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:34:50,821 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:50,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1875041737, now seen corresponding path program 5 times [2023-11-06 22:34:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16785873] [2023-11-06 22:34:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:50,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16785873] [2023-11-06 22:34:50,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16785873] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:50,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953367483] [2023-11-06 22:34:50,971 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:34:50,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:50,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:50,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:50,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:34:51,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:34:51,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:51,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:51,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:51,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:51,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953367483] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:51,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:51,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:34:51,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141763840] [2023-11-06 22:34:51,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:51,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:34:51,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:51,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:34:51,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:34:51,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:51,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 64 transitions, 912 flow. Second operand has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:51,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:51,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:51,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:51,761 INFO L124 PetriNetUnfolderBase]: 328/599 cut-off events. [2023-11-06 22:34:51,762 INFO L125 PetriNetUnfolderBase]: For 16186/16186 co-relation queries the response was YES. [2023-11-06 22:34:51,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4540 conditions, 599 events. 328/599 cut-off events. For 16186/16186 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2509 event pairs, 27 based on Foata normal form. 24/623 useless extension candidates. Maximal degree in co-relation 4500. Up to 210 conditions per place. [2023-11-06 22:34:51,771 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 56 selfloop transitions, 58 changer transitions 19/133 dead transitions. [2023-11-06 22:34:51,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 133 transitions, 2191 flow [2023-11-06 22:34:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:34:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-06 22:34:51,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1298 transitions. [2023-11-06 22:34:51,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318030605455755 [2023-11-06 22:34:51,778 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1298 transitions. [2023-11-06 22:34:51,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1298 transitions. [2023-11-06 22:34:51,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:51,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1298 transitions. [2023-11-06 22:34:51,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 72.11111111111111) internal successors, (1298), 18 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:51,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:51,792 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 167.0) internal successors, (3173), 19 states have internal predecessors, (3173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:51,792 INFO L175 Difference]: Start difference. First operand has 92 places, 64 transitions, 912 flow. Second operand 18 states and 1298 transitions. [2023-11-06 22:34:51,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 133 transitions, 2191 flow [2023-11-06 22:34:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 133 transitions, 1901 flow, removed 139 selfloop flow, removed 3 redundant places. [2023-11-06 22:34:51,874 INFO L231 Difference]: Finished difference. Result has 114 places, 80 transitions, 1286 flow [2023-11-06 22:34:51,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1286, PETRI_PLACES=114, PETRI_TRANSITIONS=80} [2023-11-06 22:34:51,875 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2023-11-06 22:34:51,876 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 80 transitions, 1286 flow [2023-11-06 22:34:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:51,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:51,877 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:51,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:52,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:34:52,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:52,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1892921323, now seen corresponding path program 6 times [2023-11-06 22:34:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:52,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514054172] [2023-11-06 22:34:52,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:52,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:52,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:52,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514054172] [2023-11-06 22:34:52,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514054172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:52,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440827495] [2023-11-06 22:34:52,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:34:52,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:52,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:52,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:52,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:34:52,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 22:34:52,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:52,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:34:52,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:52,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:52,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440827495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:52,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:52,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-06 22:34:52,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867694659] [2023-11-06 22:34:52,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:34:52,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:34:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:34:52,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:52,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 80 transitions, 1286 flow. Second operand has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:52,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:52,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:52,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:53,156 INFO L124 PetriNetUnfolderBase]: 388/707 cut-off events. [2023-11-06 22:34:53,156 INFO L125 PetriNetUnfolderBase]: For 30680/30680 co-relation queries the response was YES. [2023-11-06 22:34:53,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 707 events. 388/707 cut-off events. For 30680/30680 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3056 event pairs, 12 based on Foata normal form. 28/735 useless extension candidates. Maximal degree in co-relation 6026. Up to 247 conditions per place. [2023-11-06 22:34:53,167 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 46 selfloop transitions, 84 changer transitions 38/168 dead transitions. [2023-11-06 22:34:53,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 168 transitions, 3084 flow [2023-11-06 22:34:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:34:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-06 22:34:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1590 transitions. [2023-11-06 22:34:53,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327708219923789 [2023-11-06 22:34:53,174 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1590 transitions. [2023-11-06 22:34:53,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1590 transitions. [2023-11-06 22:34:53,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:53,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1590 transitions. [2023-11-06 22:34:53,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 72.27272727272727) internal successors, (1590), 22 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:53,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:53,190 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 167.0) internal successors, (3841), 23 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:53,190 INFO L175 Difference]: Start difference. First operand has 114 places, 80 transitions, 1286 flow. Second operand 22 states and 1590 transitions. [2023-11-06 22:34:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 168 transitions, 3084 flow [2023-11-06 22:34:53,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 168 transitions, 2492 flow, removed 261 selfloop flow, removed 12 redundant places. [2023-11-06 22:34:53,357 INFO L231 Difference]: Finished difference. Result has 134 places, 101 transitions, 1744 flow [2023-11-06 22:34:53,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1744, PETRI_PLACES=134, PETRI_TRANSITIONS=101} [2023-11-06 22:34:53,358 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 110 predicate places. [2023-11-06 22:34:53,358 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 101 transitions, 1744 flow [2023-11-06 22:34:53,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.78571428571429) internal successors, (963), 14 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:53,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:53,359 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:53,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:53,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:34:53,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:53,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:53,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1884854321, now seen corresponding path program 7 times [2023-11-06 22:34:53,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:53,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927703969] [2023-11-06 22:34:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:53,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:53,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:53,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927703969] [2023-11-06 22:34:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927703969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490925289] [2023-11-06 22:34:53,835 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 22:34:53,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:53,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:53,836 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:53,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:34:53,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:53,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:34:53,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:54,006 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:54,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490925289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:54,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-11-06 22:34:54,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886624143] [2023-11-06 22:34:54,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:54,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:34:54,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:54,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:34:54,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:34:54,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:54,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 101 transitions, 1744 flow. Second operand has 23 states, 23 states have (on average 68.47826086956522) internal successors, (1575), 23 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:54,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:54,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:54,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:55,393 INFO L124 PetriNetUnfolderBase]: 536/955 cut-off events. [2023-11-06 22:34:55,393 INFO L125 PetriNetUnfolderBase]: For 48124/48124 co-relation queries the response was YES. [2023-11-06 22:34:55,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9053 conditions, 955 events. 536/955 cut-off events. For 48124/48124 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4100 event pairs, 15 based on Foata normal form. 36/991 useless extension candidates. Maximal degree in co-relation 8996. Up to 339 conditions per place. [2023-11-06 22:34:55,411 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-11-06 22:34:55,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 247 transitions, 5062 flow [2023-11-06 22:34:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:34:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-06 22:34:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2594 transitions. [2023-11-06 22:34:55,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314703925482369 [2023-11-06 22:34:55,421 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2594 transitions. [2023-11-06 22:34:55,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2594 transitions. [2023-11-06 22:34:55,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:55,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2594 transitions. [2023-11-06 22:34:55,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.05555555555556) internal successors, (2594), 36 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:55,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:55,452 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:55,452 INFO L175 Difference]: Start difference. First operand has 134 places, 101 transitions, 1744 flow. Second operand 36 states and 2594 transitions. [2023-11-06 22:34:55,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 247 transitions, 5062 flow [2023-11-06 22:34:55,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 247 transitions, 4410 flow, removed 289 selfloop flow, removed 14 redundant places. [2023-11-06 22:34:55,644 INFO L231 Difference]: Finished difference. Result has 173 places, 138 transitions, 2788 flow [2023-11-06 22:34:55,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2788, PETRI_PLACES=173, PETRI_TRANSITIONS=138} [2023-11-06 22:34:55,646 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 149 predicate places. [2023-11-06 22:34:55,646 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 138 transitions, 2788 flow [2023-11-06 22:34:55,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 68.47826086956522) internal successors, (1575), 23 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:55,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:55,648 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:55,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:55,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:34:55,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:55,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash -92387390, now seen corresponding path program 8 times [2023-11-06 22:34:55,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:55,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630887214] [2023-11-06 22:34:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:56,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630887214] [2023-11-06 22:34:56,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630887214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:56,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995899541] [2023-11-06 22:34:56,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:34:56,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:56,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:56,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:56,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:34:56,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:34:56,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:56,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:34:56,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:56,453 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:56,754 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:56,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995899541] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:56,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:56,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-11-06 22:34:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268868314] [2023-11-06 22:34:56,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:56,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:34:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:34:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:34:56,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:56,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 138 transitions, 2788 flow. Second operand has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:56,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:56,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:56,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:34:57,878 INFO L124 PetriNetUnfolderBase]: 664/1211 cut-off events. [2023-11-06 22:34:57,879 INFO L125 PetriNetUnfolderBase]: For 100879/100879 co-relation queries the response was YES. [2023-11-06 22:34:57,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14180 conditions, 1211 events. 664/1211 cut-off events. For 100879/100879 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5520 event pairs, 104 based on Foata normal form. 32/1243 useless extension candidates. Maximal degree in co-relation 14109. Up to 467 conditions per place. [2023-11-06 22:34:57,900 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 106 selfloop transitions, 96 changer transitions 53/255 dead transitions. [2023-11-06 22:34:57,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 255 transitions, 6446 flow [2023-11-06 22:34:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 22:34:57,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-06 22:34:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2080 transitions. [2023-11-06 22:34:57,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429485855874458 [2023-11-06 22:34:57,905 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2080 transitions. [2023-11-06 22:34:57,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2080 transitions. [2023-11-06 22:34:57,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:34:57,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2080 transitions. [2023-11-06 22:34:57,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 71.72413793103448) internal successors, (2080), 29 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:57,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 167.0) internal successors, (5010), 30 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:57,939 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 167.0) internal successors, (5010), 30 states have internal predecessors, (5010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:57,939 INFO L175 Difference]: Start difference. First operand has 173 places, 138 transitions, 2788 flow. Second operand 29 states and 2080 transitions. [2023-11-06 22:34:57,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 255 transitions, 6446 flow [2023-11-06 22:34:58,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 255 transitions, 4952 flow, removed 723 selfloop flow, removed 12 redundant places. [2023-11-06 22:34:58,378 INFO L231 Difference]: Finished difference. Result has 199 places, 170 transitions, 3155 flow [2023-11-06 22:34:58,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2022, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3155, PETRI_PLACES=199, PETRI_TRANSITIONS=170} [2023-11-06 22:34:58,379 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2023-11-06 22:34:58,379 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 170 transitions, 3155 flow [2023-11-06 22:34:58,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:58,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:34:58,380 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:34:58,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:34:58,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:34:58,586 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:34:58,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:58,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1131100696, now seen corresponding path program 9 times [2023-11-06 22:34:58,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:58,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348293717] [2023-11-06 22:34:58,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:58,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:58,961 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:58,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348293717] [2023-11-06 22:34:58,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348293717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:34:58,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734211856] [2023-11-06 22:34:58,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:34:58,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:34:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:34:58,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:34:58,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:34:59,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-06 22:34:59,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:34:59,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:34:59,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:34:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:59,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:34:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:34:59,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734211856] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:34:59,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:34:59,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 28 [2023-11-06 22:34:59,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597961920] [2023-11-06 22:34:59,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:34:59,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:34:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:59,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:34:59,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:34:59,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:34:59,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 170 transitions, 3155 flow. Second operand has 30 states, 30 states have (on average 68.4) internal successors, (2052), 30 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:59,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:34:59,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:34:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:00,807 INFO L124 PetriNetUnfolderBase]: 808/1483 cut-off events. [2023-11-06 22:35:00,807 INFO L125 PetriNetUnfolderBase]: For 160046/160046 co-relation queries the response was YES. [2023-11-06 22:35:00,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17465 conditions, 1483 events. 808/1483 cut-off events. For 160046/160046 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6851 event pairs, 40 based on Foata normal form. 32/1515 useless extension candidates. Maximal degree in co-relation 17387. Up to 595 conditions per place. [2023-11-06 22:35:00,846 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 73 selfloop transitions, 173 changer transitions 67/313 dead transitions. [2023-11-06 22:35:00,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 313 transitions, 7325 flow [2023-11-06 22:35:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:35:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-06 22:35:00,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2584 transitions. [2023-11-06 22:35:00,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42980705256154356 [2023-11-06 22:35:00,855 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2584 transitions. [2023-11-06 22:35:00,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2584 transitions. [2023-11-06 22:35:00,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:00,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2584 transitions. [2023-11-06 22:35:00,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 71.77777777777777) internal successors, (2584), 36 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:00,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:00,873 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 167.0) internal successors, (6179), 37 states have internal predecessors, (6179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:00,874 INFO L175 Difference]: Start difference. First operand has 199 places, 170 transitions, 3155 flow. Second operand 36 states and 2584 transitions. [2023-11-06 22:35:00,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 313 transitions, 7325 flow [2023-11-06 22:35:01,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 313 transitions, 6641 flow, removed 310 selfloop flow, removed 11 redundant places. [2023-11-06 22:35:01,332 INFO L231 Difference]: Finished difference. Result has 236 places, 207 transitions, 4158 flow [2023-11-06 22:35:01,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=2667, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4158, PETRI_PLACES=236, PETRI_TRANSITIONS=207} [2023-11-06 22:35:01,333 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 212 predicate places. [2023-11-06 22:35:01,333 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 207 transitions, 4158 flow [2023-11-06 22:35:01,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 68.4) internal successors, (2052), 30 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:01,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:01,334 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:01,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:01,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:35:01,541 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:35:01,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:01,541 INFO L85 PathProgramCache]: Analyzing trace with hash 774763282, now seen corresponding path program 10 times [2023-11-06 22:35:01,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:01,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753776058] [2023-11-06 22:35:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:01,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:01,881 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:01,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753776058] [2023-11-06 22:35:01,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753776058] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:01,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139899065] [2023-11-06 22:35:01,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:35:01,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:01,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:01,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:35:01,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:35:01,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:35:01,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:35:01,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:35:01,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:02,067 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139899065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:02,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:35:02,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2023-11-06 22:35:02,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737885622] [2023-11-06 22:35:02,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:02,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 22:35:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:02,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 22:35:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:35:02,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:35:02,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 207 transitions, 4158 flow. Second operand has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:02,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:02,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:35:02,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:04,231 INFO L124 PetriNetUnfolderBase]: 908/1651 cut-off events. [2023-11-06 22:35:04,231 INFO L125 PetriNetUnfolderBase]: For 233913/233913 co-relation queries the response was YES. [2023-11-06 22:35:04,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 1651 events. 908/1651 cut-off events. For 233913/233913 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7677 event pairs, 12 based on Foata normal form. 32/1683 useless extension candidates. Maximal degree in co-relation 21544. Up to 663 conditions per place. [2023-11-06 22:35:04,260 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 70 selfloop transitions, 214 changer transitions 84/368 dead transitions. [2023-11-06 22:35:04,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 368 transitions, 9464 flow [2023-11-06 22:35:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 22:35:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-06 22:35:04,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3236 transitions. [2023-11-06 22:35:04,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43060545575515635 [2023-11-06 22:35:04,268 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3236 transitions. [2023-11-06 22:35:04,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3236 transitions. [2023-11-06 22:35:04,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:04,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3236 transitions. [2023-11-06 22:35:04,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 71.91111111111111) internal successors, (3236), 45 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:04,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 167.0) internal successors, (7682), 46 states have internal predecessors, (7682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:04,288 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 167.0) internal successors, (7682), 46 states have internal predecessors, (7682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:04,289 INFO L175 Difference]: Start difference. First operand has 236 places, 207 transitions, 4158 flow. Second operand 45 states and 3236 transitions. [2023-11-06 22:35:04,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 368 transitions, 9464 flow [2023-11-06 22:35:05,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 368 transitions, 8678 flow, removed 304 selfloop flow, removed 17 redundant places. [2023-11-06 22:35:05,062 INFO L231 Difference]: Finished difference. Result has 278 places, 232 transitions, 5246 flow [2023-11-06 22:35:05,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5246, PETRI_PLACES=278, PETRI_TRANSITIONS=232} [2023-11-06 22:35:05,063 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 254 predicate places. [2023-11-06 22:35:05,063 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 232 transitions, 5246 flow [2023-11-06 22:35:05,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 68.46153846153847) internal successors, (1780), 26 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:05,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:05,065 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:05,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 22:35:05,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:35:05,276 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:35:05,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:05,280 INFO L85 PathProgramCache]: Analyzing trace with hash 86769389, now seen corresponding path program 11 times [2023-11-06 22:35:05,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:05,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490247876] [2023-11-06 22:35:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:05,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:05,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490247876] [2023-11-06 22:35:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490247876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819307975] [2023-11-06 22:35:05,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:35:05,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:05,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:05,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:35:05,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:35:05,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-06 22:35:05,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:35:05,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:35:05,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:06,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:35:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819307975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:35:06,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:35:06,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2023-11-06 22:35:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330032721] [2023-11-06 22:35:06,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:35:06,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 22:35:06,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:06,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 22:35:06,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:35:06,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 167 [2023-11-06 22:35:06,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 232 transitions, 5246 flow. Second operand has 46 states, 46 states have (on average 68.23913043478261) internal successors, (3139), 46 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:06,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:06,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 167 [2023-11-06 22:35:06,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:08,619 INFO L124 PetriNetUnfolderBase]: 1016/1843 cut-off events. [2023-11-06 22:35:08,619 INFO L125 PetriNetUnfolderBase]: For 346940/346940 co-relation queries the response was YES. [2023-11-06 22:35:08,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27665 conditions, 1843 events. 1016/1843 cut-off events. For 346940/346940 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8615 event pairs, 29 based on Foata normal form. 12/1855 useless extension candidates. Maximal degree in co-relation 27558. Up to 739 conditions per place. [2023-11-06 22:35:08,651 INFO L140 encePairwiseOnDemand]: 162/167 looper letters, 82 selfloop transitions, 233 changer transitions 90/405 dead transitions. [2023-11-06 22:35:08,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 405 transitions, 11615 flow [2023-11-06 22:35:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-06 22:35:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-11-06 22:35:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3446 transitions. [2023-11-06 22:35:08,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42989021956087825 [2023-11-06 22:35:08,658 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3446 transitions. [2023-11-06 22:35:08,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3446 transitions. [2023-11-06 22:35:08,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:08,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3446 transitions. [2023-11-06 22:35:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 71.79166666666667) internal successors, (3446), 48 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,678 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 167.0) internal successors, (8183), 49 states have internal predecessors, (8183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:08,678 INFO L175 Difference]: Start difference. First operand has 278 places, 232 transitions, 5246 flow. Second operand 48 states and 3446 transitions. [2023-11-06 22:35:08,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 405 transitions, 11615 flow [2023-11-06 22:35:09,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 405 transitions, 9826 flow, removed 752 selfloop flow, removed 30 redundant places. [2023-11-06 22:35:09,913 INFO L231 Difference]: Finished difference. Result has 303 places, 259 transitions, 5381 flow [2023-11-06 22:35:09,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=3941, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5381, PETRI_PLACES=303, PETRI_TRANSITIONS=259} [2023-11-06 22:35:09,914 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 279 predicate places. [2023-11-06 22:35:09,914 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 259 transitions, 5381 flow [2023-11-06 22:35:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 68.23913043478261) internal successors, (3139), 46 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:09,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:35:09,915 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:09,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:10,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:10,116 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-06 22:35:10,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:35:10,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1605663201, now seen corresponding path program 12 times [2023-11-06 22:35:10,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:35:10,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81564838] [2023-11-06 22:35:10,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:35:10,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:35:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:35:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 90 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:10,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:35:10,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81564838] [2023-11-06 22:35:10,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81564838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:35:10,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342500366] [2023-11-06 22:35:10,345 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:35:10,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:10,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:35:10,347 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:35:10,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:35:10,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-11-06 22:35:10,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:35:10,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:35:10,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:35:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:35:10,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:35:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342500366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:35:10,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:35:10,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 14 [2023-11-06 22:35:10,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428970217] [2023-11-06 22:35:10,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:35:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:35:10,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:35:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:35:10,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:35:10,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 167 [2023-11-06 22:35:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 259 transitions, 5381 flow. Second operand has 13 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:10,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:35:10,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 167 [2023-11-06 22:35:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:35:13,260 INFO L124 PetriNetUnfolderBase]: 4495/7055 cut-off events. [2023-11-06 22:35:13,260 INFO L125 PetriNetUnfolderBase]: For 1416091/1416091 co-relation queries the response was YES. [2023-11-06 22:35:13,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97763 conditions, 7055 events. 4495/7055 cut-off events. For 1416091/1416091 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 38471 event pairs, 74 based on Foata normal form. 376/7431 useless extension candidates. Maximal degree in co-relation 97651. Up to 2678 conditions per place. [2023-11-06 22:35:13,327 INFO L140 encePairwiseOnDemand]: 164/167 looper letters, 0 selfloop transitions, 0 changer transitions 1464/1464 dead transitions. [2023-11-06 22:35:13,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 1464 transitions, 30260 flow [2023-11-06 22:35:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:35:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:35:13,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1007 transitions. [2023-11-06 22:35:13,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.463841547673883 [2023-11-06 22:35:13,331 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1007 transitions. [2023-11-06 22:35:13,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1007 transitions. [2023-11-06 22:35:13,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:35:13,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1007 transitions. [2023-11-06 22:35:13,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.46153846153847) internal successors, (1007), 13 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:13,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 167.0) internal successors, (2338), 14 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:13,338 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 167.0) internal successors, (2338), 14 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:13,338 INFO L175 Difference]: Start difference. First operand has 303 places, 259 transitions, 5381 flow. Second operand 13 states and 1007 transitions. [2023-11-06 22:35:13,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 1464 transitions, 30260 flow [2023-11-06 22:35:18,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 1464 transitions, 26715 flow, removed 413 selfloop flow, removed 44 redundant places. [2023-11-06 22:35:18,297 INFO L231 Difference]: Finished difference. Result has 270 places, 0 transitions, 0 flow [2023-11-06 22:35:18,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=167, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=270, PETRI_TRANSITIONS=0} [2023-11-06 22:35:18,298 INFO L281 CegarLoopForPetriNet]: 24 programPoint places, 246 predicate places. [2023-11-06 22:35:18,298 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 0 transitions, 0 flow [2023-11-06 22:35:18,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.23076923076923) internal successors, (939), 13 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:35:18,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2023-11-06 22:35:18,300 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-06 22:35:18,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-06 22:35:18,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:35:18,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:35:18,502 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:35:18,506 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:35:18,506 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:35:18,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:35:18 BasicIcfg [2023-11-06 22:35:18,510 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:35:18,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:35:18,511 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:35:18,511 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:35:18,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:34:41" (3/4) ... [2023-11-06 22:35:18,513 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:35:18,517 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2023-11-06 22:35:18,517 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2023-11-06 22:35:18,521 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-06 22:35:18,522 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-06 22:35:18,522 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:35:18,522 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-06 22:35:18,576 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:35:18,577 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:35:18,577 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:35:18,578 INFO L158 Benchmark]: Toolchain (without parser) took 38139.74ms. Allocated memory was 140.5MB in the beginning and 1.1GB in the end (delta: 1.0GB). Free memory was 93.9MB in the beginning and 846.8MB in the end (delta: -752.9MB). Peak memory consumption was 249.2MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,578 INFO L158 Benchmark]: CDTParser took 0.62ms. Allocated memory is still 140.5MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:35:18,578 INFO L158 Benchmark]: CACSL2BoogieTranslator took 613.32ms. Allocated memory is still 140.5MB. Free memory was 93.6MB in the beginning and 74.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,579 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.47ms. Allocated memory is still 140.5MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,579 INFO L158 Benchmark]: Boogie Preprocessor took 62.66ms. Allocated memory is still 140.5MB. Free memory was 72.3MB in the beginning and 70.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,580 INFO L158 Benchmark]: RCFGBuilder took 540.17ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 70.9MB in the beginning and 161.2MB in the end (delta: -90.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,580 INFO L158 Benchmark]: TraceAbstraction took 36780.48ms. Allocated memory was 197.1MB in the beginning and 1.1GB in the end (delta: 943.7MB). Free memory was 160.1MB in the beginning and 848.9MB in the end (delta: -688.8MB). Peak memory consumption was 452.0MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,581 INFO L158 Benchmark]: Witness Printer took 66.59ms. Allocated memory is still 1.1GB. Free memory was 848.9MB in the beginning and 846.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:35:18,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62ms. Allocated memory is still 140.5MB. Free memory is still 115.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 613.32ms. Allocated memory is still 140.5MB. Free memory was 93.6MB in the beginning and 74.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.47ms. Allocated memory is still 140.5MB. Free memory was 74.4MB in the beginning and 72.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.66ms. Allocated memory is still 140.5MB. Free memory was 72.3MB in the beginning and 70.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.17ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 70.9MB in the beginning and 161.2MB in the end (delta: -90.3MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 36780.48ms. Allocated memory was 197.1MB in the beginning and 1.1GB in the end (delta: 943.7MB). Free memory was 160.1MB in the beginning and 848.9MB in the end (delta: -688.8MB). Peak memory consumption was 452.0MB. Max. memory is 16.1GB. * Witness Printer took 66.59ms. Allocated memory is still 1.1GB. Free memory was 848.9MB in the beginning and 846.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 81 PlacesBefore, 24 PlacesAfterwards, 80 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 24 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 85 TotalNumberOfCompositions, 1540 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1395, independent: 1366, independent conditional: 0, independent unconditional: 1366, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 900, independent: 890, independent conditional: 0, independent unconditional: 890, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1395, independent: 476, independent conditional: 0, independent unconditional: 476, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 900, unknown conditional: 0, unknown unconditional: 900] , Statistics on independence cache: Total cache size (in pairs): 19, Positive cache size: 16, Positive conditional cache size: 0, Positive unconditional cache size: 16, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 693]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 711]: 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 5 procedures, 101 locations, 8 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: 36.6s, OverallIterations: 20, TraceHistogramMax: 11, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3876 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3652 mSDsluCounter, 697 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 607 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4257 IncrementalHoareTripleChecker+Invalid, 4632 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 90 mSDtfsCounter, 4257 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 698 GetRequests, 231 SyntacticMatches, 8 SemanticMatches, 459 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6748 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5381occurred in iteration=19, InterpolantAutomatonStates: 325, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.6s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 551 ConstructedInterpolants, 0 QuantifiedInterpolants, 2305 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1615 ConjunctsInSsa, 150 ConjunctsInUnsatCore, 39 InterpolantComputations, 11 PerfectInterpolantSequences, 190/902 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:35:18,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6b08c20-e14f-484e-92a9-4bd9c0cc7039/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE