./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.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_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/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_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/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_1476c959-903b-40ca-a11e-93b01148ae83/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 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:31:30,197 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:31:30,281 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:31:30,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:31:30,287 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:31:30,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:31:30,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:31:30,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:31:30,314 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:31:30,315 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:31:30,316 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:31:30,316 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:31:30,317 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:31:30,318 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:31:30,318 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:31:30,319 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:31:30,320 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:31:30,320 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:31:30,321 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:31:30,321 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:31:30,322 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:31:30,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:31:30,323 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:31:30,324 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:31:30,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:31:30,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:31:30,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:31:30,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:31:30,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:31:30,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:30,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:31:30,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:31:30,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:31:30,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:31:30,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:31:30,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:31:30,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:31:30,330 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:31:30,331 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_1476c959-903b-40ca-a11e-93b01148ae83/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c [2023-11-06 22:31:30,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:31:30,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:31:30,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:31:30,600 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:31:30,600 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:31:30,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/safe008_tso.i [2023-11-06 22:31:33,740 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:34,075 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:34,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/sv-benchmarks/c/pthread-wmm/safe008_tso.i [2023-11-06 22:31:34,092 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/data/d0fa8a0ad/ae974ce7d87b4453ba3aa62cb74029b0/FLAGad8ff096f [2023-11-06 22:31:34,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/data/d0fa8a0ad/ae974ce7d87b4453ba3aa62cb74029b0 [2023-11-06 22:31:34,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:34,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:34,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:34,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:34,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:34,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@505bbeb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34, skipping insertion in model container [2023-11-06 22:31:34,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:34,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:34,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:31:34,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:34,776 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:34,776 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:31:34,784 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:31:34,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34 WrapperNode [2023-11-06 22:31:34,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:34,786 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:34,786 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:31:34,786 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:31:34,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,856 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-06 22:31:34,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:34,857 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:31:34,857 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:31:34,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:31:34,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,883 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,917 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:31:34,918 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:31:34,918 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:31:34,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:31:34,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (1/1) ... [2023-11-06 22:31:34,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:34,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:31:34,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:31:35,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:31:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:31:35,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:31:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:31:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:31:35,018 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:31:35,018 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:31:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:31:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:31:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:31:35,019 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:31:35,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:31:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:31:35,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:31:35,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:31:35,023 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 22:31:35,200 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:31:35,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:31:35,383 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:31:35,391 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:31:35,391 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:31:35,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:35 BoogieIcfgContainer [2023-11-06 22:31:35,394 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:31:35,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:31:35,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:31:35,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:31:35,403 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:31:34" (1/3) ... [2023-11-06 22:31:35,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314c3e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:35, skipping insertion in model container [2023-11-06 22:31:35,405 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:34" (2/3) ... [2023-11-06 22:31:35,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314c3e90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:35, skipping insertion in model container [2023-11-06 22:31:35,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:35" (3/3) ... [2023-11-06 22:31:35,409 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2023-11-06 22:31:35,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:31:35,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-06 22:31:35,429 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:31:35,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:31:35,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 103 transitions, 218 flow [2023-11-06 22:31:35,634 INFO L124 PetriNetUnfolderBase]: 3/100 cut-off events. [2023-11-06 22:31:35,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:35,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 100 events. 3/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-06 22:31:35,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 103 transitions, 218 flow [2023-11-06 22:31:35,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 95 transitions, 199 flow [2023-11-06 22:31:35,652 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:31:35,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 95 transitions, 199 flow [2023-11-06 22:31:35,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 95 transitions, 199 flow [2023-11-06 22:31:35,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 199 flow [2023-11-06 22:31:35,733 INFO L124 PetriNetUnfolderBase]: 3/95 cut-off events. [2023-11-06 22:31:35,733 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 95 events. 3/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2023-11-06 22:31:35,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 1800 [2023-11-06 22:31:38,841 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-11-06 22:31:38,841 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-11-06 22:31:38,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:38,864 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;@aa5361b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:38,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-06 22:31:38,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:31:38,867 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:31:38,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:38,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:38,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:31:38,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:38,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:38,874 INFO L85 PathProgramCache]: Analyzing trace with hash 366, now seen corresponding path program 1 times [2023-11-06 22:31:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:38,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433884269] [2023-11-06 22:31:38,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:38,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,022 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 22:31:39,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433884269] [2023-11-06 22:31:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433884269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:39,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:31:39,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109469151] [2023-11-06 22:31:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:39,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:31:39,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:39,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:31:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:31:39,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 201 [2023-11-06 22:31:39,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:39,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 201 [2023-11-06 22:31:39,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:39,210 INFO L124 PetriNetUnfolderBase]: 218/376 cut-off events. [2023-11-06 22:31:39,211 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:31:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 376 events. 218/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1615 event pairs, 218 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 747. Up to 352 conditions per place. [2023-11-06 22:31:39,217 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-11-06 22:31:39,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-11-06 22:31:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:31:39,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:31:39,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 214 transitions. [2023-11-06 22:31:39,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5323383084577115 [2023-11-06 22:31:39,233 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 214 transitions. [2023-11-06 22:31:39,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 214 transitions. [2023-11-06 22:31:39,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:39,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 214 transitions. [2023-11-06 22:31:39,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 107.0) internal successors, (214), 2 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,247 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,249 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 214 transitions. [2023-11-06 22:31:39,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-11-06 22:31:39,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:39,254 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-11-06 22:31:39,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-06 22:31:39,260 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-11-06 22:31:39,260 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-11-06 22:31:39,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:39,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:39,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:39,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:31:39,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:39,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1125063233, now seen corresponding path program 1 times [2023-11-06 22:31:39,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:39,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159631244] [2023-11-06 22:31:39,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:39,726 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 22:31:39,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:39,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159631244] [2023-11-06 22:31:39,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159631244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:39,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:39,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:39,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171716288] [2023-11-06 22:31:39,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:39,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:39,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:39,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 201 [2023-11-06 22:31:39,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:31:39,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:39,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 201 [2023-11-06 22:31:39,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:39,904 INFO L124 PetriNetUnfolderBase]: 390/687 cut-off events. [2023-11-06 22:31:39,905 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:31:39,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 687 events. 390/687 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3569 event pairs, 148 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 1352. Up to 422 conditions per place. [2023-11-06 22:31:39,917 INFO L140 encePairwiseOnDemand]: 194/201 looper letters, 23 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-06 22:31:39,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 130 flow [2023-11-06 22:31:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:39,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-06 22:31:39,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-11-06 22:31:39,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-06 22:31:39,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-06 22:31:39,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:39,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-06 22:31:39,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states 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 22:31:39,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:39,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:39,937 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 297 transitions. [2023-11-06 22:31:39,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 130 flow [2023-11-06 22:31:39,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:31:39,940 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 88 flow [2023-11-06 22:31:39,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-06 22:31:39,941 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-11-06 22:31:39,941 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 88 flow [2023-11-06 22:31:39,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states 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 22:31:39,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:39,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:39,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:31:39,942 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:39,943 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1125063236, now seen corresponding path program 1 times [2023-11-06 22:31:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:39,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541457523] [2023-11-06 22:31:39,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:40,331 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 22:31:40,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:40,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541457523] [2023-11-06 22:31:40,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541457523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:40,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:40,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:40,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771980731] [2023-11-06 22:31:40,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:40,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:40,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:40,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 201 [2023-11-06 22:31:40,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 22:31:40,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:40,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 201 [2023-11-06 22:31:40,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:40,654 INFO L124 PetriNetUnfolderBase]: 308/557 cut-off events. [2023-11-06 22:31:40,654 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2023-11-06 22:31:40,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1463 conditions, 557 events. 308/557 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2771 event pairs, 63 based on Foata normal form. 17/574 useless extension candidates. Maximal degree in co-relation 1458. Up to 405 conditions per place. [2023-11-06 22:31:40,661 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:31:40,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 214 flow [2023-11-06 22:31:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:40,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-11-06 22:31:40,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43084577114427863 [2023-11-06 22:31:40,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-11-06 22:31:40,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-11-06 22:31:40,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:40,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-11-06 22:31:40,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 22:31:40,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:40,671 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:40,672 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 88 flow. Second operand 5 states and 433 transitions. [2023-11-06 22:31:40,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 214 flow [2023-11-06 22:31:40,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:40,679 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 95 flow [2023-11-06 22:31:40,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-06 22:31:40,680 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2023-11-06 22:31:40,680 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 95 flow [2023-11-06 22:31:40,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 22:31:40,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:40,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:31:40,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:40,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash 517220668, now seen corresponding path program 1 times [2023-11-06 22:31:40,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:40,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469360009] [2023-11-06 22:31:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:40,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:41,111 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 22:31:41,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469360009] [2023-11-06 22:31:41,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469360009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:41,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:41,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:41,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968556604] [2023-11-06 22:31:41,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:41,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:41,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:41,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:41,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 201 [2023-11-06 22:31:41,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 22:31:41,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:41,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 201 [2023-11-06 22:31:41,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:41,428 INFO L124 PetriNetUnfolderBase]: 370/688 cut-off events. [2023-11-06 22:31:41,428 INFO L125 PetriNetUnfolderBase]: For 323/330 co-relation queries the response was YES. [2023-11-06 22:31:41,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1761 conditions, 688 events. 370/688 cut-off events. For 323/330 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3874 event pairs, 215 based on Foata normal form. 18/678 useless extension candidates. Maximal degree in co-relation 1755. Up to 335 conditions per place. [2023-11-06 22:31:41,436 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 30 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-11-06 22:31:41,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 223 flow [2023-11-06 22:31:41,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-11-06 22:31:41,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43283582089552236 [2023-11-06 22:31:41,439 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-11-06 22:31:41,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-11-06 22:31:41,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:41,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-11-06 22:31:41,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 22:31:41,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:41,445 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:41,445 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 95 flow. Second operand 5 states and 435 transitions. [2023-11-06 22:31:41,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 223 flow [2023-11-06 22:31:41,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 39 transitions, 209 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:31:41,450 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 121 flow [2023-11-06 22:31:41,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-06 22:31:41,452 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-06 22:31:41,452 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 121 flow [2023-11-06 22:31:41,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 22:31:41,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:41,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:41,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:31:41,454 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:41,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:41,454 INFO L85 PathProgramCache]: Analyzing trace with hash 517177885, now seen corresponding path program 1 times [2023-11-06 22:31:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089701009] [2023-11-06 22:31:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:41,577 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 22:31:41,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:41,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089701009] [2023-11-06 22:31:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089701009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:41,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:31:41,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889145476] [2023-11-06 22:31:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:41,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 201 [2023-11-06 22:31:41,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 22:31:41,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:41,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 201 [2023-11-06 22:31:41,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:41,740 INFO L124 PetriNetUnfolderBase]: 348/669 cut-off events. [2023-11-06 22:31:41,741 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-11-06 22:31:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 669 events. 348/669 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3828 event pairs, 152 based on Foata normal form. 7/672 useless extension candidates. Maximal degree in co-relation 1713. Up to 515 conditions per place. [2023-11-06 22:31:41,748 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 24 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-11-06 22:31:41,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 202 flow [2023-11-06 22:31:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-06 22:31:41,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058043117744611 [2023-11-06 22:31:41,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-06 22:31:41,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-06 22:31:41,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:41,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-06 22:31:41,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states 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 22:31:41,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:41,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:41,757 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 121 flow. Second operand 3 states and 305 transitions. [2023-11-06 22:31:41,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 202 flow [2023-11-06 22:31:41,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 197 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:41,762 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 133 flow [2023-11-06 22:31:41,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-11-06 22:31:41,765 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-11-06 22:31:41,766 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 133 flow [2023-11-06 22:31:41,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 22:31:41,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:41,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:41,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:31:41,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:41,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1958741920, now seen corresponding path program 1 times [2023-11-06 22:31:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762848144] [2023-11-06 22:31:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:41,958 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 22:31:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762848144] [2023-11-06 22:31:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762848144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580501469] [2023-11-06 22:31:41,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:41,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:41,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:41,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 22:31:41,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:31:41,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:41,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 22:31:41,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:42,161 INFO L124 PetriNetUnfolderBase]: 536/986 cut-off events. [2023-11-06 22:31:42,161 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2023-11-06 22:31:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 986 events. 536/986 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6056 event pairs, 162 based on Foata normal form. 44/1027 useless extension candidates. Maximal degree in co-relation 2612. Up to 360 conditions per place. [2023-11-06 22:31:42,170 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 39 selfloop transitions, 5 changer transitions 2/49 dead transitions. [2023-11-06 22:31:42,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 341 flow [2023-11-06 22:31:42,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:42,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 404 transitions. [2023-11-06 22:31:42,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5024875621890548 [2023-11-06 22:31:42,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 404 transitions. [2023-11-06 22:31:42,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 404 transitions. [2023-11-06 22:31:42,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:42,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 404 transitions. [2023-11-06 22:31:42,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states 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 22:31:42,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states 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 22:31:42,180 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states 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 22:31:42,181 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 133 flow. Second operand 4 states and 404 transitions. [2023-11-06 22:31:42,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 341 flow [2023-11-06 22:31:42,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 49 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:42,186 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 152 flow [2023-11-06 22:31:42,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-06 22:31:42,189 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-11-06 22:31:42,190 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 152 flow [2023-11-06 22:31:42,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 22:31:42,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:42,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:42,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:31:42,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:42,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:42,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1958741923, now seen corresponding path program 1 times [2023-11-06 22:31:42,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:42,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441200194] [2023-11-06 22:31:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:42,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:42,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:42,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:42,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441200194] [2023-11-06 22:31:42,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441200194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:42,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:42,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:42,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486651340] [2023-11-06 22:31:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:42,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:42,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:42,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 201 [2023-11-06 22:31:42,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 22:31:42,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:42,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 201 [2023-11-06 22:31:42,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:42,955 INFO L124 PetriNetUnfolderBase]: 327/641 cut-off events. [2023-11-06 22:31:42,955 INFO L125 PetriNetUnfolderBase]: For 698/698 co-relation queries the response was YES. [2023-11-06 22:31:42,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1802 conditions, 641 events. 327/641 cut-off events. For 698/698 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3461 event pairs, 239 based on Foata normal form. 36/675 useless extension candidates. Maximal degree in co-relation 1791. Up to 358 conditions per place. [2023-11-06 22:31:42,961 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 24 selfloop transitions, 5 changer transitions 18/50 dead transitions. [2023-11-06 22:31:42,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 50 transitions, 338 flow [2023-11-06 22:31:42,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:42,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:31:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2023-11-06 22:31:42,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115138592750533 [2023-11-06 22:31:42,965 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2023-11-06 22:31:42,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2023-11-06 22:31:42,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:42,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2023-11-06 22:31:42,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states 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 22:31:42,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 201.0) internal successors, (1608), 8 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 22:31:42,971 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 201.0) internal successors, (1608), 8 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states 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 22:31:42,972 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 152 flow. Second operand 7 states and 579 transitions. [2023-11-06 22:31:42,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 50 transitions, 338 flow [2023-11-06 22:31:42,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:31:42,975 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 181 flow [2023-11-06 22:31:42,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2023-11-06 22:31:42,976 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-06 22:31:42,976 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 181 flow [2023-11-06 22:31:42,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 22:31:42,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:42,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:42,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:31:42,978 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:42,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:42,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1323666533, now seen corresponding path program 1 times [2023-11-06 22:31:42,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:42,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180290604] [2023-11-06 22:31:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:42,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:43,283 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 22:31:43,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180290604] [2023-11-06 22:31:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180290604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644798189] [2023-11-06 22:31:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:43,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:43,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:43,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 201 [2023-11-06 22:31:43,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 22:31:43,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:43,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 201 [2023-11-06 22:31:43,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:43,605 INFO L124 PetriNetUnfolderBase]: 315/601 cut-off events. [2023-11-06 22:31:43,606 INFO L125 PetriNetUnfolderBase]: For 842/844 co-relation queries the response was YES. [2023-11-06 22:31:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 601 events. 315/601 cut-off events. For 842/844 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2887 event pairs, 188 based on Foata normal form. 18/616 useless extension candidates. Maximal degree in co-relation 1696. Up to 422 conditions per place. [2023-11-06 22:31:43,612 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-11-06 22:31:43,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 307 flow [2023-11-06 22:31:43,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:43,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 431 transitions. [2023-11-06 22:31:43,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42885572139303485 [2023-11-06 22:31:43,619 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 431 transitions. [2023-11-06 22:31:43,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 431 transitions. [2023-11-06 22:31:43,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:43,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 431 transitions. [2023-11-06 22:31:43,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.2) internal successors, (431), 5 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 22:31:43,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:43,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:43,624 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 181 flow. Second operand 5 states and 431 transitions. [2023-11-06 22:31:43,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 307 flow [2023-11-06 22:31:43,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 277 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-06 22:31:43,630 INFO L231 Difference]: Finished difference. Result has 46 places, 31 transitions, 197 flow [2023-11-06 22:31:43,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=46, PETRI_TRANSITIONS=31} [2023-11-06 22:31:43,633 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-11-06 22:31:43,633 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 31 transitions, 197 flow [2023-11-06 22:31:43,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 22:31:43,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:43,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:43,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:31:43,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:43,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1323666536, now seen corresponding path program 1 times [2023-11-06 22:31:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195442960] [2023-11-06 22:31:43,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:43,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:43,795 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 22:31:43,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:43,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195442960] [2023-11-06 22:31:43,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195442960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:43,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:43,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:43,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553832044] [2023-11-06 22:31:43,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:43,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:43,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:43,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-11-06 22:31:43,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 31 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 22:31:43,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:43,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-11-06 22:31:43,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:43,971 INFO L124 PetriNetUnfolderBase]: 424/751 cut-off events. [2023-11-06 22:31:43,971 INFO L125 PetriNetUnfolderBase]: For 652/652 co-relation queries the response was YES. [2023-11-06 22:31:43,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2090 conditions, 751 events. 424/751 cut-off events. For 652/652 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3444 event pairs, 69 based on Foata normal form. 12/763 useless extension candidates. Maximal degree in co-relation 2076. Up to 268 conditions per place. [2023-11-06 22:31:43,979 INFO L140 encePairwiseOnDemand]: 193/201 looper letters, 37 selfloop transitions, 12 changer transitions 1/53 dead transitions. [2023-11-06 22:31:43,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 391 flow [2023-11-06 22:31:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:43,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 479 transitions. [2023-11-06 22:31:43,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766169154228856 [2023-11-06 22:31:43,982 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 479 transitions. [2023-11-06 22:31:43,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 479 transitions. [2023-11-06 22:31:43,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:43,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 479 transitions. [2023-11-06 22:31:43,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 22:31:43,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:43,987 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:43,987 INFO L175 Difference]: Start difference. First operand has 46 places, 31 transitions, 197 flow. Second operand 5 states and 479 transitions. [2023-11-06 22:31:43,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 391 flow [2023-11-06 22:31:43,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 53 transitions, 378 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:31:43,991 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 264 flow [2023-11-06 22:31:43,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2023-11-06 22:31:43,992 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-11-06 22:31:43,992 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 264 flow [2023-11-06 22:31:43,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states 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 22:31:43,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:43,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:43,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:31:43,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:43,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:43,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2029753876, now seen corresponding path program 2 times [2023-11-06 22:31:43,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:43,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347886928] [2023-11-06 22:31:44,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:44,105 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 22:31:44,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:44,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347886928] [2023-11-06 22:31:44,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347886928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:44,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941614929] [2023-11-06 22:31:44,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:44,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:44,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:44,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 201 [2023-11-06 22:31:44,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 22:31:44,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:44,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 201 [2023-11-06 22:31:44,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:44,269 INFO L124 PetriNetUnfolderBase]: 421/767 cut-off events. [2023-11-06 22:31:44,269 INFO L125 PetriNetUnfolderBase]: For 1073/1075 co-relation queries the response was YES. [2023-11-06 22:31:44,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2364 conditions, 767 events. 421/767 cut-off events. For 1073/1075 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3703 event pairs, 98 based on Foata normal form. 18/784 useless extension candidates. Maximal degree in co-relation 2348. Up to 258 conditions per place. [2023-11-06 22:31:44,276 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 34 selfloop transitions, 6 changer transitions 5/48 dead transitions. [2023-11-06 22:31:44,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 385 flow [2023-11-06 22:31:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 471 transitions. [2023-11-06 22:31:44,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46865671641791046 [2023-11-06 22:31:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 471 transitions. [2023-11-06 22:31:44,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 471 transitions. [2023-11-06 22:31:44,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:44,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 471 transitions. [2023-11-06 22:31:44,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.2) internal successors, (471), 5 states have internal predecessors, (471), 0 states have call successors, (0), 0 states 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 22:31:44,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:44,284 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:44,285 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 264 flow. Second operand 5 states and 471 transitions. [2023-11-06 22:31:44,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 385 flow [2023-11-06 22:31:44,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:31:44,290 INFO L231 Difference]: Finished difference. Result has 56 places, 33 transitions, 254 flow [2023-11-06 22:31:44,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=56, PETRI_TRANSITIONS=33} [2023-11-06 22:31:44,291 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2023-11-06 22:31:44,292 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 33 transitions, 254 flow [2023-11-06 22:31:44,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states 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 22:31:44,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:44,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:44,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:31:44,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:44,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1233244922, now seen corresponding path program 1 times [2023-11-06 22:31:44,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:44,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864787231] [2023-11-06 22:31:44,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:44,373 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 22:31:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864787231] [2023-11-06 22:31:44,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864787231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:31:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824634632] [2023-11-06 22:31:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:44,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 22:31:44,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 33 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 22:31:44,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:44,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 22:31:44,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:44,468 INFO L124 PetriNetUnfolderBase]: 174/389 cut-off events. [2023-11-06 22:31:44,468 INFO L125 PetriNetUnfolderBase]: For 858/866 co-relation queries the response was YES. [2023-11-06 22:31:44,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 389 events. 174/389 cut-off events. For 858/866 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2045 event pairs, 50 based on Foata normal form. 23/407 useless extension candidates. Maximal degree in co-relation 1275. Up to 319 conditions per place. [2023-11-06 22:31:44,472 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 32 selfloop transitions, 4 changer transitions 2/47 dead transitions. [2023-11-06 22:31:44,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 425 flow [2023-11-06 22:31:44,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:31:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-11-06 22:31:44,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5008291873963516 [2023-11-06 22:31:44,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-11-06 22:31:44,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-11-06 22:31:44,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:44,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-11-06 22:31:44,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 22:31:44,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:44,478 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 0 states 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 22:31:44,478 INFO L175 Difference]: Start difference. First operand has 56 places, 33 transitions, 254 flow. Second operand 3 states and 302 transitions. [2023-11-06 22:31:44,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 425 flow [2023-11-06 22:31:44,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 388 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-06 22:31:44,483 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 251 flow [2023-11-06 22:31:44,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=251, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2023-11-06 22:31:44,484 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-11-06 22:31:44,484 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 251 flow [2023-11-06 22:31:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 22:31:44,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:44,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:31:44,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:44,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:44,486 INFO L85 PathProgramCache]: Analyzing trace with hash 693746158, now seen corresponding path program 1 times [2023-11-06 22:31:44,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:44,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271941577] [2023-11-06 22:31:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:44,585 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 22:31:44,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:44,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271941577] [2023-11-06 22:31:44,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271941577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:44,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381321266] [2023-11-06 22:31:44,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:31:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:44,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:31:44,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:31:44,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 22:31:44,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 251 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:31:44,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:44,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 22:31:44,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:44,673 INFO L124 PetriNetUnfolderBase]: 98/258 cut-off events. [2023-11-06 22:31:44,673 INFO L125 PetriNetUnfolderBase]: For 429/471 co-relation queries the response was YES. [2023-11-06 22:31:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 258 events. 98/258 cut-off events. For 429/471 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1281 event pairs, 10 based on Foata normal form. 58/311 useless extension candidates. Maximal degree in co-relation 996. Up to 147 conditions per place. [2023-11-06 22:31:44,676 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 35 selfloop transitions, 7 changer transitions 3/54 dead transitions. [2023-11-06 22:31:44,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 460 flow [2023-11-06 22:31:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:31:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:31:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 401 transitions. [2023-11-06 22:31:44,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4987562189054726 [2023-11-06 22:31:44,679 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 401 transitions. [2023-11-06 22:31:44,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 401 transitions. [2023-11-06 22:31:44,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:44,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 401 transitions. [2023-11-06 22:31:44,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 22:31:44,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states 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 22:31:44,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 201.0) internal successors, (1005), 5 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states 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 22:31:44,684 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 251 flow. Second operand 4 states and 401 transitions. [2023-11-06 22:31:44,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 460 flow [2023-11-06 22:31:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:31:44,688 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 287 flow [2023-11-06 22:31:44,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=287, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2023-11-06 22:31:44,689 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-11-06 22:31:44,689 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 287 flow [2023-11-06 22:31:44,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 22:31:44,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:44,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:44,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:31:44,690 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:44,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:44,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1406374879, now seen corresponding path program 1 times [2023-11-06 22:31:44,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:44,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165133365] [2023-11-06 22:31:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:44,786 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 22:31:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165133365] [2023-11-06 22:31:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165133365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:44,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623543352] [2023-11-06 22:31:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:44,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:44,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:44,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 201 [2023-11-06 22:31:44,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 22:31:44,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:44,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 201 [2023-11-06 22:31:44,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:44,878 INFO L124 PetriNetUnfolderBase]: 78/205 cut-off events. [2023-11-06 22:31:44,878 INFO L125 PetriNetUnfolderBase]: For 631/709 co-relation queries the response was YES. [2023-11-06 22:31:44,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 205 events. 78/205 cut-off events. For 631/709 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 967 event pairs, 5 based on Foata normal form. 69/269 useless extension candidates. Maximal degree in co-relation 921. Up to 109 conditions per place. [2023-11-06 22:31:44,880 INFO L140 encePairwiseOnDemand]: 196/201 looper letters, 20 selfloop transitions, 10 changer transitions 17/51 dead transitions. [2023-11-06 22:31:44,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 455 flow [2023-11-06 22:31:44,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 492 transitions. [2023-11-06 22:31:44,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48955223880597015 [2023-11-06 22:31:44,883 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 492 transitions. [2023-11-06 22:31:44,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 492 transitions. [2023-11-06 22:31:44,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:44,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 492 transitions. [2023-11-06 22:31:44,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 22:31:44,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:44,889 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:44,889 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 287 flow. Second operand 5 states and 492 transitions. [2023-11-06 22:31:44,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 455 flow [2023-11-06 22:31:44,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 417 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-06 22:31:44,893 INFO L231 Difference]: Finished difference. Result has 56 places, 25 transitions, 179 flow [2023-11-06 22:31:44,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=56, PETRI_TRANSITIONS=25} [2023-11-06 22:31:44,894 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2023-11-06 22:31:44,894 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 25 transitions, 179 flow [2023-11-06 22:31:44,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 22:31:44,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:31:44,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:44,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:31:44,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-11-06 22:31:44,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:44,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1004538811, now seen corresponding path program 1 times [2023-11-06 22:31:44,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:44,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330009694] [2023-11-06 22:31:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:44,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:45,167 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 22:31:45,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:45,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330009694] [2023-11-06 22:31:45,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330009694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:45,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:45,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78020501] [2023-11-06 22:31:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:45,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:45,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:45,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 201 [2023-11-06 22:31:45,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 25 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 22:31:45,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:31:45,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 201 [2023-11-06 22:31:45,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:31:45,362 INFO L124 PetriNetUnfolderBase]: 23/62 cut-off events. [2023-11-06 22:31:45,362 INFO L125 PetriNetUnfolderBase]: For 197/198 co-relation queries the response was YES. [2023-11-06 22:31:45,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 62 events. 23/62 cut-off events. For 197/198 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 2 based on Foata normal form. 1/62 useless extension candidates. Maximal degree in co-relation 273. Up to 33 conditions per place. [2023-11-06 22:31:45,363 INFO L140 encePairwiseOnDemand]: 197/201 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-06 22:31:45,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 30 transitions, 270 flow [2023-11-06 22:31:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:31:45,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-11-06 22:31:45,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41592039800995023 [2023-11-06 22:31:45,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-11-06 22:31:45,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-11-06 22:31:45,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:31:45,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-11-06 22:31:45,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states 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 22:31:45,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:45,370 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 201.0) internal successors, (1206), 6 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states 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 22:31:45,370 INFO L175 Difference]: Start difference. First operand has 56 places, 25 transitions, 179 flow. Second operand 5 states and 418 transitions. [2023-11-06 22:31:45,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 30 transitions, 270 flow [2023-11-06 22:31:45,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 30 transitions, 196 flow, removed 8 selfloop flow, removed 15 redundant places. [2023-11-06 22:31:45,372 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-06 22:31:45,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-06 22:31:45,373 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-11-06 22:31:45,373 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-06 22:31:45,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 22:31:45,375 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-06 22:31:45,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-06 22:31:45,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-06 22:31:45,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-06 22:31:45,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-06 22:31:45,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-06 22:31:45,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-06 22:31:45,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-06 22:31:45,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-06 22:31:45,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-06 22:31:45,377 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-06 22:31:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:31:45,378 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:45,381 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:31:45,381 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:31:45,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:31:45 BasicIcfg [2023-11-06 22:31:45,384 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:31:45,385 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:31:45,385 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:31:45,385 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:31:45,385 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:35" (3/4) ... [2023-11-06 22:31:45,387 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:31:45,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-06 22:31:45,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-06 22:31:45,391 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-06 22:31:45,396 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-11-06 22:31:45,397 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:31:45,397 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:31:45,397 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:31:45,444 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:31:45,444 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:31:45,444 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:31:45,445 INFO L158 Benchmark]: Toolchain (without parser) took 11334.62ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 119.2MB in the beginning and 160.1MB in the end (delta: -40.8MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2023-11-06 22:31:45,445 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 85.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:31:45,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.26ms. Allocated memory is still 151.0MB. Free memory was 118.9MB in the beginning and 98.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-06 22:31:45,446 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.46ms. Allocated memory is still 151.0MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:31:45,446 INFO L158 Benchmark]: Boogie Preprocessor took 60.03ms. Allocated memory is still 151.0MB. Free memory was 96.2MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:31:45,447 INFO L158 Benchmark]: RCFGBuilder took 476.38ms. Allocated memory is still 151.0MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:31:45,447 INFO L158 Benchmark]: TraceAbstraction took 9987.47ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 79.4MB in the beginning and 164.2MB in the end (delta: -84.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:31:45,447 INFO L158 Benchmark]: Witness Printer took 59.70ms. Allocated memory is still 220.2MB. Free memory was 164.2MB in the beginning and 160.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:31:45,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 85.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 673.26ms. Allocated memory is still 151.0MB. Free memory was 118.9MB in the beginning and 98.5MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.46ms. Allocated memory is still 151.0MB. Free memory was 98.5MB in the beginning and 96.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.03ms. Allocated memory is still 151.0MB. Free memory was 96.2MB in the beginning and 94.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 476.38ms. Allocated memory is still 151.0MB. Free memory was 94.8MB in the beginning and 80.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9987.47ms. Allocated memory was 151.0MB in the beginning and 220.2MB in the end (delta: 69.2MB). Free memory was 79.4MB in the beginning and 164.2MB in the end (delta: -84.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 59.70ms. Allocated memory is still 220.2MB. Free memory was 164.2MB in the beginning and 160.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 102 PlacesBefore, 34 PlacesAfterwards, 95 TransitionsBefore, 25 TransitionsAfterwards, 1800 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 59 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 2 ChoiceCompositions, 98 TotalNumberOfCompositions, 3460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1846, independent: 1746, independent conditional: 0, independent unconditional: 1746, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1054, independent: 1021, independent conditional: 0, independent unconditional: 1021, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1846, independent: 725, independent conditional: 0, independent unconditional: 725, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 1054, unknown conditional: 0, unknown unconditional: 1054] , Statistics on independence cache: Total cache size (in pairs): 61, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, 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: -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: 17]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 776]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 125 locations, 11 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: 9.8s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 653 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 415 mSDsluCounter, 130 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 72 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1515 IncrementalHoareTripleChecker+Invalid, 1587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 72 mSolverCounterUnsat, 43 mSDtfsCounter, 1515 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=287occurred in iteration=12, InterpolantAutomatonStates: 61, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 1562 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:31:45,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1476c959-903b-40ca-a11e-93b01148ae83/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