./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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_edc213e6-7560-42eb-8aea-45e8554f1669/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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:34,610 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:34,744 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:11:34,756 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:34,757 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:34,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:34,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:34,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:34,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:34,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:34,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:34,812 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:34,812 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:34,815 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:34,815 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:34,816 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:34,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:34,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:34,817 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:11:34,818 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:11:34,818 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:11:34,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:34,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:11:34,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:11:34,822 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:34,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:34,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:34,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:34,825 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:34,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:34,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:34,828 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:34,828 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:11:34,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:11:34,829 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:34,829 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:34,829 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:34,830 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:34,830 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_edc213e6-7560-42eb-8aea-45e8554f1669/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-06 22:11:35,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:35,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:35,149 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:35,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:35,151 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:35,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-06 22:11:38,424 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:38,705 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:38,706 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-06 22:11:38,723 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/fef35d983/751ca4bb78694b5aa88c33f6daf99ff2/FLAG49dc283d4 [2023-11-06 22:11:38,738 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/fef35d983/751ca4bb78694b5aa88c33f6daf99ff2 [2023-11-06 22:11:38,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:38,742 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:38,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:38,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:38,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:38,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:38" (1/1) ... [2023-11-06 22:11:38,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cf4027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:38, skipping insertion in model container [2023-11-06 22:11:38,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:38" (1/1) ... [2023-11-06 22:11:38,826 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:39,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:39,325 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:39,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:39,448 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:39,449 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:39,456 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:39,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39 WrapperNode [2023-11-06 22:11:39,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:39,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:39,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:39,460 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:39,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,532 INFO L138 Inliner]: procedures = 175, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 121 [2023-11-06 22:11:39,533 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:39,534 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:39,534 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:39,534 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:39,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,544 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,575 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,576 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,579 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:39,580 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:39,580 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:39,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:39,581 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (1/1) ... [2023-11-06 22:11:39,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:39,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:39,617 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:39,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:39,659 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-06 22:11:39,659 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:11:39,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:11:39,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:39,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:39,663 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 22:11:39,901 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:39,904 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:40,189 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:40,224 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:40,225 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:11:40,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:40 BoogieIcfgContainer [2023-11-06 22:11:40,228 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:40,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:40,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:40,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:40,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:38" (1/3) ... [2023-11-06 22:11:40,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db06894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:40, skipping insertion in model container [2023-11-06 22:11:40,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:39" (2/3) ... [2023-11-06 22:11:40,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db06894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:40, skipping insertion in model container [2023-11-06 22:11:40,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:40" (3/3) ... [2023-11-06 22:11:40,241 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-06 22:11:40,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:40,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:11:40,265 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:11:40,325 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:11:40,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 124 transitions, 252 flow [2023-11-06 22:11:40,426 INFO L124 PetriNetUnfolderBase]: 7/123 cut-off events. [2023-11-06 22:11:40,426 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:40,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 7/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-06 22:11:40,433 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 124 transitions, 252 flow [2023-11-06 22:11:40,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 123 transitions, 249 flow [2023-11-06 22:11:40,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:11:40,457 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 123 transitions, 249 flow [2023-11-06 22:11:40,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 123 transitions, 249 flow [2023-11-06 22:11:40,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 123 transitions, 249 flow [2023-11-06 22:11:40,498 INFO L124 PetriNetUnfolderBase]: 7/123 cut-off events. [2023-11-06 22:11:40,498 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:40,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 123 events. 7/123 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-06 22:11:40,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 4060 [2023-11-06 22:11:44,308 INFO L134 LiptonReduction]: Checked pairs total: 4530 [2023-11-06 22:11:44,308 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-11-06 22:11:44,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:11:44,333 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;@6259f7e4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:11:44,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:11:44,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:11:44,336 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-06 22:11:44,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:44,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:44,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:11:44,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:44,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:44,342 INFO L85 PathProgramCache]: Analyzing trace with hash 494, now seen corresponding path program 1 times [2023-11-06 22:11:44,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:44,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200660582] [2023-11-06 22:11:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:44,494 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 22:11:44,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:44,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200660582] [2023-11-06 22:11:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200660582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:44,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:44,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:11:44,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867290166] [2023-11-06 22:11:44,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:44,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:11:44,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:44,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:11:44,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:11:44,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-11-06 22:11:44,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 22 transitions, 47 flow. Second operand has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 22:11:44,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:44,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-11-06 22:11:44,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:44,649 INFO L124 PetriNetUnfolderBase]: 71/137 cut-off events. [2023-11-06 22:11:44,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:44,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 137 events. 71/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 418 event pairs, 48 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 268. Up to 136 conditions per place. [2023-11-06 22:11:44,656 INFO L140 encePairwiseOnDemand]: 265/267 looper letters, 18 selfloop transitions, 0 changer transitions 1/20 dead transitions. [2023-11-06 22:11:44,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 81 flow [2023-11-06 22:11:44,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:11:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:11:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 255 transitions. [2023-11-06 22:11:44,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47752808988764045 [2023-11-06 22:11:44,686 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 255 transitions. [2023-11-06 22:11:44,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 255 transitions. [2023-11-06 22:11:44,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:44,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 255 transitions. [2023-11-06 22:11:44,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states 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 22:11:44,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 22:11:44,708 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 267.0) internal successors, (801), 3 states have internal predecessors, (801), 0 states have call successors, (0), 0 states 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 22:11:44,711 INFO L175 Difference]: Start difference. First operand has 23 places, 22 transitions, 47 flow. Second operand 2 states and 255 transitions. [2023-11-06 22:11:44,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 81 flow [2023-11-06 22:11:44,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 20 transitions, 80 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:44,718 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 40 flow [2023-11-06 22:11:44,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-11-06 22:11:44,727 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -2 predicate places. [2023-11-06 22:11:44,727 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 40 flow [2023-11-06 22:11:44,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 117.5) internal successors, (235), 2 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 22:11:44,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:44,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:11:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:11:44,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:44,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 15071812, now seen corresponding path program 1 times [2023-11-06 22:11:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:44,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900035113] [2023-11-06 22:11:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:44,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:44,933 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 22:11:44,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:44,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900035113] [2023-11-06 22:11:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900035113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468934832] [2023-11-06 22:11:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:44,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-11-06 22:11:44,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 22:11:44,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:44,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-11-06 22:11:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,063 INFO L124 PetriNetUnfolderBase]: 105/211 cut-off events. [2023-11-06 22:11:45,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:45,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 211 events. 105/211 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 812 event pairs, 30 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 417. Up to 105 conditions per place. [2023-11-06 22:11:45,069 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 29 selfloop transitions, 3 changer transitions 0/33 dead transitions. [2023-11-06 22:11:45,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 33 transitions, 132 flow [2023-11-06 22:11:45,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:45,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-06 22:11:45,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681647940074906 [2023-11-06 22:11:45,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-06 22:11:45,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-06 22:11:45,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-06 22:11:45,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 22:11:45,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,086 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 40 flow. Second operand 3 states and 375 transitions. [2023-11-06 22:11:45,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 33 transitions, 132 flow [2023-11-06 22:11:45,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 33 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:11:45,090 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 58 flow [2023-11-06 22:11:45,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-11-06 22:11:45,094 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2023-11-06 22:11:45,095 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 58 flow [2023-11-06 22:11:45,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 22:11:45,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:45,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:11:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:11:45,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:45,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,102 INFO L85 PathProgramCache]: Analyzing trace with hash 467169457, now seen corresponding path program 1 times [2023-11-06 22:11:45,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:45,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988607343] [2023-11-06 22:11:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,267 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 22:11:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988607343] [2023-11-06 22:11:45,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988607343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951342277] [2023-11-06 22:11:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:45,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:45,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 267 [2023-11-06 22:11:45,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 22:11:45,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 267 [2023-11-06 22:11:45,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,340 INFO L124 PetriNetUnfolderBase]: 90/188 cut-off events. [2023-11-06 22:11:45,340 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-06 22:11:45,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 416 conditions, 188 events. 90/188 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 691 event pairs, 44 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 411. Up to 146 conditions per place. [2023-11-06 22:11:45,342 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 23 selfloop transitions, 4 changer transitions 0/28 dead transitions. [2023-11-06 22:11:45,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 28 transitions, 134 flow [2023-11-06 22:11:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:45,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-06 22:11:45,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606741573033708 [2023-11-06 22:11:45,345 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-06 22:11:45,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-06 22:11:45,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-06 22:11:45,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states 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 22:11:45,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,350 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,350 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 58 flow. Second operand 3 states and 369 transitions. [2023-11-06 22:11:45,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 28 transitions, 134 flow [2023-11-06 22:11:45,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:45,353 INFO L231 Difference]: Finished difference. Result has 26 places, 21 transitions, 74 flow [2023-11-06 22:11:45,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=26, PETRI_TRANSITIONS=21} [2023-11-06 22:11:45,354 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-11-06 22:11:45,354 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 21 transitions, 74 flow [2023-11-06 22:11:45,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 22:11:45,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:45,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:45,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:11:45,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:45,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2021693690, now seen corresponding path program 1 times [2023-11-06 22:11:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887633986] [2023-11-06 22:11:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:11:45,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887633986] [2023-11-06 22:11:45,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887633986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:45,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:45,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:11:45,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081349832] [2023-11-06 22:11:45,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:45,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:45,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:45,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 267 [2023-11-06 22:11:45,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:45,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 267 [2023-11-06 22:11:45,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,651 INFO L124 PetriNetUnfolderBase]: 77/160 cut-off events. [2023-11-06 22:11:45,652 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-06 22:11:45,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 160 events. 77/160 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 559 event pairs, 43 based on Foata normal form. 15/157 useless extension candidates. Maximal degree in co-relation 403. Up to 158 conditions per place. [2023-11-06 22:11:45,653 INFO L140 encePairwiseOnDemand]: 265/267 looper letters, 13 selfloop transitions, 1 changer transitions 5/20 dead transitions. [2023-11-06 22:11:45,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 110 flow [2023-11-06 22:11:45,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-11-06 22:11:45,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419475655430712 [2023-11-06 22:11:45,656 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-11-06 22:11:45,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-11-06 22:11:45,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-11-06 22:11:45,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states 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 22:11:45,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,662 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,662 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 74 flow. Second operand 3 states and 354 transitions. [2023-11-06 22:11:45,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 110 flow [2023-11-06 22:11:45,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 20 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:45,667 INFO L231 Difference]: Finished difference. Result has 25 places, 15 transitions, 52 flow [2023-11-06 22:11:45,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=15} [2023-11-06 22:11:45,669 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2023-11-06 22:11:45,669 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 15 transitions, 52 flow [2023-11-06 22:11:45,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:45,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:45,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:45,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:11:45,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:45,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1751010585, now seen corresponding path program 1 times [2023-11-06 22:11:45,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:45,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516666035] [2023-11-06 22:11:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,757 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 22:11:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516666035] [2023-11-06 22:11:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516666035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:11:45,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436950680] [2023-11-06 22:11:45,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:11:45,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:45,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:11:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:11:45,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 267 [2023-11-06 22:11:45,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 15 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 22:11:45,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 267 [2023-11-06 22:11:45,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,822 INFO L124 PetriNetUnfolderBase]: 22/60 cut-off events. [2023-11-06 22:11:45,823 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:11:45,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 60 events. 22/60 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 172 event pairs, 3 based on Foata normal form. 5/53 useless extension candidates. Maximal degree in co-relation 146. Up to 30 conditions per place. [2023-11-06 22:11:45,825 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 13 selfloop transitions, 2 changer transitions 4/20 dead transitions. [2023-11-06 22:11:45,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 20 transitions, 106 flow [2023-11-06 22:11:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:11:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:11:45,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 463 transitions. [2023-11-06 22:11:45,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43352059925093633 [2023-11-06 22:11:45,829 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 463 transitions. [2023-11-06 22:11:45,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 463 transitions. [2023-11-06 22:11:45,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 463 transitions. [2023-11-06 22:11:45,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.75) internal successors, (463), 4 states have internal predecessors, (463), 0 states have call successors, (0), 0 states 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 22:11:45,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 22:11:45,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states 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 22:11:45,837 INFO L175 Difference]: Start difference. First operand has 25 places, 15 transitions, 52 flow. Second operand 4 states and 463 transitions. [2023-11-06 22:11:45,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 20 transitions, 106 flow [2023-11-06 22:11:45,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 103 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:45,839 INFO L231 Difference]: Finished difference. Result has 23 places, 13 transitions, 47 flow [2023-11-06 22:11:45,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=23, PETRI_TRANSITIONS=13} [2023-11-06 22:11:45,843 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 0 predicate places. [2023-11-06 22:11:45,844 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 13 transitions, 47 flow [2023-11-06 22:11:45,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 22:11:45,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:45,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:45,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:11:45,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:45,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1554114295, now seen corresponding path program 1 times [2023-11-06 22:11:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074853531] [2023-11-06 22:11:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:45,936 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 22:11:45,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074853531] [2023-11-06 22:11:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074853531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:45,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:11:45,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494335699] [2023-11-06 22:11:45,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:45,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:11:45,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:45,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:11:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:11:45,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 267 [2023-11-06 22:11:45,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 13 transitions, 47 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 22:11:45,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:45,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 267 [2023-11-06 22:11:45,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:45,987 INFO L124 PetriNetUnfolderBase]: 17/55 cut-off events. [2023-11-06 22:11:45,988 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:11:45,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 55 events. 17/55 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 183 event pairs, 13 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 141. Up to 45 conditions per place. [2023-11-06 22:11:45,989 INFO L140 encePairwiseOnDemand]: 265/267 looper letters, 11 selfloop transitions, 0 changer transitions 5/17 dead transitions. [2023-11-06 22:11:45,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 90 flow [2023-11-06 22:11:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:11:45,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:11:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-11-06 22:11:45,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431960049937578 [2023-11-06 22:11:45,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-11-06 22:11:45,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-11-06 22:11:45,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:45,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-11-06 22:11:45,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:11:45,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states 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 22:11:45,998 INFO L175 Difference]: Start difference. First operand has 23 places, 13 transitions, 47 flow. Second operand 3 states and 355 transitions. [2023-11-06 22:11:45,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 90 flow [2023-11-06 22:11:45,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:11:46,000 INFO L231 Difference]: Finished difference. Result has 22 places, 12 transitions, 41 flow [2023-11-06 22:11:46,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=12} [2023-11-06 22:11:46,003 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, -1 predicate places. [2023-11-06 22:11:46,007 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 12 transitions, 41 flow [2023-11-06 22:11:46,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states 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 22:11:46,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:46,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:46,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:11:46,009 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:46,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash -72972325, now seen corresponding path program 1 times [2023-11-06 22:11:46,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:46,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937047816] [2023-11-06 22:11:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:46,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:11:46,139 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 22:11:46,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:11:46,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937047816] [2023-11-06 22:11:46,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937047816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:11:46,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:11:46,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:11:46,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918670893] [2023-11-06 22:11:46,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:11:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:11:46,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:11:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:11:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:11:46,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 267 [2023-11-06 22:11:46,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 12 transitions, 41 flow. Second operand has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 22:11:46,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:11:46,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 267 [2023-11-06 22:11:46,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:11:46,283 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2023-11-06 22:11:46,283 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:11:46,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 86 events. 24/86 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 323 event pairs, 12 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 205. Up to 47 conditions per place. [2023-11-06 22:11:46,285 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 19 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-11-06 22:11:46,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 137 flow [2023-11-06 22:11:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:11:46,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:11:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2023-11-06 22:11:46,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41144997324772603 [2023-11-06 22:11:46,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2023-11-06 22:11:46,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2023-11-06 22:11:46,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:11:46,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2023-11-06 22:11:46,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states 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 22:11:46,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states 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 22:11:46,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states 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 22:11:46,302 INFO L175 Difference]: Start difference. First operand has 22 places, 12 transitions, 41 flow. Second operand 7 states and 769 transitions. [2023-11-06 22:11:46,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 137 flow [2023-11-06 22:11:46,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 133 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 22:11:46,306 INFO L231 Difference]: Finished difference. Result has 30 places, 15 transitions, 70 flow [2023-11-06 22:11:46,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=30, PETRI_TRANSITIONS=15} [2023-11-06 22:11:46,307 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 7 predicate places. [2023-11-06 22:11:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 15 transitions, 70 flow [2023-11-06 22:11:46,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states 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 22:11:46,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:11:46,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:11:46,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:11:46,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:11:46,310 INFO L85 PathProgramCache]: Analyzing trace with hash 305862897, now seen corresponding path program 2 times [2023-11-06 22:11:46,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:11:46,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583624772] [2023-11-06 22:11:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:11:46,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:11:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:11:46,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:11:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:11:46,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:11:46,369 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:11:46,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-06 22:11:46,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-06 22:11:46,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-06 22:11:46,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-06 22:11:46,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-06 22:11:46,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:11:46,373 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:11:46,379 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:11:46,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:11:46,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:11:46 BasicIcfg [2023-11-06 22:11:46,436 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:11:46,437 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:11:46,437 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:11:46,437 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:11:46,438 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:40" (3/4) ... [2023-11-06 22:11:46,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:11:46,441 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:11:46,442 INFO L158 Benchmark]: Toolchain (without parser) took 7699.62ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 90.5MB in the beginning and 70.9MB in the end (delta: 19.5MB). Peak memory consumption was 71.5MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,443 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:11:46,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 714.28ms. Allocated memory is still 138.4MB. Free memory was 90.5MB in the beginning and 70.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,443 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.44ms. Allocated memory is still 138.4MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,444 INFO L158 Benchmark]: Boogie Preprocessor took 45.78ms. Allocated memory is still 138.4MB. Free memory was 68.3MB in the beginning and 66.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,444 INFO L158 Benchmark]: RCFGBuilder took 648.32ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 66.8MB in the beginning and 151.4MB in the end (delta: -84.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,445 INFO L158 Benchmark]: TraceAbstraction took 6204.35ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 70.9MB in the end (delta: 80.4MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2023-11-06 22:11:46,445 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 188.7MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:11:46,447 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 138.4MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 714.28ms. Allocated memory is still 138.4MB. Free memory was 90.5MB in the beginning and 70.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.44ms. Allocated memory is still 138.4MB. Free memory was 70.7MB in the beginning and 68.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.78ms. Allocated memory is still 138.4MB. Free memory was 68.3MB in the beginning and 66.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 648.32ms. Allocated memory was 138.4MB in the beginning and 188.7MB in the end (delta: 50.3MB). Free memory was 66.8MB in the beginning and 151.4MB in the end (delta: -84.6MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6204.35ms. Allocated memory is still 188.7MB. Free memory was 151.4MB in the beginning and 70.9MB in the end (delta: 80.4MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 188.7MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 120 PlacesBefore, 23 PlacesAfterwards, 123 TransitionsBefore, 22 TransitionsAfterwards, 4060 CoEnabledTransitionPairs, 5 FixpointIterations, 24 TrivialSequentialCompositions, 85 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 30 ConcurrentYvCompositions, 4 ChoiceCompositions, 143 TotalNumberOfCompositions, 4530 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3784, independent: 3710, independent conditional: 0, independent unconditional: 3710, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2505, independent: 2475, independent conditional: 0, independent unconditional: 2475, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3784, independent: 1235, independent conditional: 0, independent unconditional: 1235, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 2505, unknown conditional: 0, unknown unconditional: 2505] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 33, Positive conditional cache size: 0, Positive unconditional cache size: 33, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=-1, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L709] 0 int lp = pendingIo; VAL [lp=1, lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=1] [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L752] 1 stopped = 1 [L753] 1 return 0; [L712] EXPR 0 pendingIo = lp + 1 [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=2, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 147 locations, 5 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: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 169 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 43 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 40 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=3, InterpolantAutomatonStates: 25, 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, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:11:46,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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 f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:11:49,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:11:49,594 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:11:49,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:11:49,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:11:49,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:11:49,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:11:49,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:11:49,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:11:49,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:11:49,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:11:49,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:11:49,666 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:11:49,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:11:49,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:11:49,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:11:49,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:11:49,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:11:49,670 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:11:49,671 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:11:49,671 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:11:49,673 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:11:49,673 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:11:49,674 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:11:49,674 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:11:49,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:11:49,675 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:11:49,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:11:49,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:11:49,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:11:49,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:11:49,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:49,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:11:49,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:11:49,679 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:11:49,680 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:11:49,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:11:49,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:11:49,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:11:49,682 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:11:49,682 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:11:49,682 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_edc213e6-7560-42eb-8aea-45e8554f1669/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2023-11-06 22:11:50,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:11:50,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:11:50,165 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:11:50,166 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:11:50,167 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:11:50,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-06 22:11:53,360 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:11:53,718 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:11:53,719 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2023-11-06 22:11:53,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/572db843a/2a93f4b0c68a42378206e6587fb1933c/FLAGd12d64f76 [2023-11-06 22:11:53,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/data/572db843a/2a93f4b0c68a42378206e6587fb1933c [2023-11-06 22:11:53,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:11:53,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:11:53,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:53,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:11:53,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:11:53,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:53" (1/1) ... [2023-11-06 22:11:53,773 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc8261b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:53, skipping insertion in model container [2023-11-06 22:11:53,773 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:11:53" (1/1) ... [2023-11-06 22:11:53,833 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:11:54,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:54,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:11:54,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:11:54,528 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:54,528 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:11:54,537 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:11:54,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54 WrapperNode [2023-11-06 22:11:54,537 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:11:54,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:54,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:11:54,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:11:54,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,582 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,632 INFO L138 Inliner]: procedures = 178, calls = 37, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 119 [2023-11-06 22:11:54,634 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:11:54,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:11:54,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:11:54,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:11:54,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:11:54,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:11:54,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:11:54,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:11:54,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (1/1) ... [2023-11-06 22:11:54,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:11:54,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:11:54,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:11:54,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:11:54,800 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2023-11-06 22:11:54,800 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2023-11-06 22:11:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:11:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:11:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:11:54,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:11:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:11:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:11:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:11:54,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:11:54,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:11:54,804 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 22:11:55,025 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:11:55,028 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:11:55,305 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:11:55,333 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:11:55,334 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:11:55,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:55 BoogieIcfgContainer [2023-11-06 22:11:55,337 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:11:55,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:11:55,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:11:55,342 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:11:55,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:11:53" (1/3) ... [2023-11-06 22:11:55,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5c74eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:55, skipping insertion in model container [2023-11-06 22:11:55,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:11:54" (2/3) ... [2023-11-06 22:11:55,344 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5c74eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:11:55, skipping insertion in model container [2023-11-06 22:11:55,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:55" (3/3) ... [2023-11-06 22:11:55,346 INFO L112 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2023-11-06 22:11:55,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:11:55,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-06 22:11:55,365 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:11:55,436 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:11:55,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 122 transitions, 248 flow [2023-11-06 22:11:55,577 INFO L124 PetriNetUnfolderBase]: 7/121 cut-off events. [2023-11-06 22:11:55,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:55,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 7/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-06 22:11:55,586 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 122 transitions, 248 flow [2023-11-06 22:11:55,592 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 121 transitions, 245 flow [2023-11-06 22:11:55,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:11:55,618 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 121 transitions, 245 flow [2023-11-06 22:11:55,627 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 121 transitions, 245 flow [2023-11-06 22:11:55,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 121 transitions, 245 flow [2023-11-06 22:11:55,681 INFO L124 PetriNetUnfolderBase]: 7/121 cut-off events. [2023-11-06 22:11:55,683 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:11:55,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 7/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-11-06 22:11:55,692 INFO L119 LiptonReduction]: Number of co-enabled transitions 3808 [2023-11-06 22:12:01,348 INFO L134 LiptonReduction]: Checked pairs total: 4544 [2023-11-06 22:12:01,348 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-11-06 22:12:01,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:12:01,385 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;@ecaff20, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:12:01,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 22:12:01,387 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:12:01,387 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:12:01,387 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:01,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:01,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:12:01,388 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:01,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:01,393 INFO L85 PathProgramCache]: Analyzing trace with hash 489, now seen corresponding path program 1 times [2023-11-06 22:12:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258918552] [2023-11-06 22:12:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:01,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:01,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:01,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:12:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:01,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 22:12:01,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:01,510 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 22:12:01,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:01,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258918552] [2023-11-06 22:12:01,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258918552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:01,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:01,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:12:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382702556] [2023-11-06 22:12:01,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:12:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:12:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:12:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 263 [2023-11-06 22:12:01,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 21 transitions, 45 flow. Second operand has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:01,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:01,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 263 [2023-11-06 22:12:01,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:01,691 INFO L124 PetriNetUnfolderBase]: 61/118 cut-off events. [2023-11-06 22:12:01,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 118 events. 61/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 347 event pairs, 40 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 230. Up to 117 conditions per place. [2023-11-06 22:12:01,695 INFO L140 encePairwiseOnDemand]: 261/263 looper letters, 17 selfloop transitions, 0 changer transitions 1/19 dead transitions. [2023-11-06 22:12:01,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 77 flow [2023-11-06 22:12:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:12:01,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:12:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2023-11-06 22:12:01,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752851711026616 [2023-11-06 22:12:01,720 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2023-11-06 22:12:01,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2023-11-06 22:12:01,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:01,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2023-11-06 22:12:01,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 22:12:01,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:12:01,747 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states 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 22:12:01,749 INFO L175 Difference]: Start difference. First operand has 22 places, 21 transitions, 45 flow. Second operand 2 states and 250 transitions. [2023-11-06 22:12:01,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 77 flow [2023-11-06 22:12:01,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:01,755 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 38 flow [2023-11-06 22:12:01,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=38, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-11-06 22:12:01,761 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -2 predicate places. [2023-11-06 22:12:01,761 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 38 flow [2023-11-06 22:12:01,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 115.5) internal successors, (231), 2 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:01,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:01,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:12:01,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:01,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:01,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:01,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:01,988 INFO L85 PathProgramCache]: Analyzing trace with hash 14917587, now seen corresponding path program 1 times [2023-11-06 22:12:01,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:01,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623628930] [2023-11-06 22:12:01,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:01,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:01,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:01,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:12:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:02,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:12:02,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:02,083 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 22:12:02,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:02,083 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:02,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623628930] [2023-11-06 22:12:02,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623628930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:02,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:02,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234383313] [2023-11-06 22:12:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:02,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:02,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:02,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:02,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 263 [2023-11-06 22:12:02,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:12:02,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:02,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 263 [2023-11-06 22:12:02,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:02,235 INFO L124 PetriNetUnfolderBase]: 89/179 cut-off events. [2023-11-06 22:12:02,236 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:12:02,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 179 events. 89/179 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 649 event pairs, 24 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 354. Up to 89 conditions per place. [2023-11-06 22:12:02,239 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 27 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-06 22:12:02,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 31 transitions, 124 flow [2023-11-06 22:12:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:02,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-06 22:12:02,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46514575411913817 [2023-11-06 22:12:02,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-06 22:12:02,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-06 22:12:02,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:02,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-06 22:12:02,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 22:12:02,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:02,263 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:02,264 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 38 flow. Second operand 3 states and 367 transitions. [2023-11-06 22:12:02,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 31 transitions, 124 flow [2023-11-06 22:12:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 31 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:12:02,266 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 56 flow [2023-11-06 22:12:02,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-11-06 22:12:02,268 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 1 predicate places. [2023-11-06 22:12:02,268 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 56 flow [2023-11-06 22:12:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 22:12:02,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:02,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:12:02,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:02,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:02,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:02,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:02,486 INFO L85 PathProgramCache]: Analyzing trace with hash 462417808, now seen corresponding path program 1 times [2023-11-06 22:12:02,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:02,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277018620] [2023-11-06 22:12:02,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:02,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:02,488 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:02,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:12:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:02,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:12:02,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:02,584 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 22:12:02,584 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:02,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277018620] [2023-11-06 22:12:02,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277018620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:02,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:02,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771109582] [2023-11-06 22:12:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:02,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:02,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:02,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:02,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:02,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-11-06 22:12:02,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:02,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-11-06 22:12:02,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:02,720 INFO L124 PetriNetUnfolderBase]: 94/186 cut-off events. [2023-11-06 22:12:02,720 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-06 22:12:02,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 186 events. 94/186 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 695 event pairs, 55 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 405. Up to 174 conditions per place. [2023-11-06 22:12:02,723 INFO L140 encePairwiseOnDemand]: 259/263 looper letters, 22 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-06 22:12:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 25 transitions, 116 flow [2023-11-06 22:12:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-11-06 22:12:02,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45373891001267425 [2023-11-06 22:12:02,727 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-11-06 22:12:02,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-11-06 22:12:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-11-06 22:12:02,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states 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 22:12:02,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:02,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:02,734 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 56 flow. Second operand 3 states and 358 transitions. [2023-11-06 22:12:02,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 25 transitions, 116 flow [2023-11-06 22:12:02,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 25 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:02,736 INFO L231 Difference]: Finished difference. Result has 24 places, 20 transitions, 64 flow [2023-11-06 22:12:02,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=24, PETRI_TRANSITIONS=20} [2023-11-06 22:12:02,737 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 2 predicate places. [2023-11-06 22:12:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 20 transitions, 64 flow [2023-11-06 22:12:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:02,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:02,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:12:02,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:02,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:02,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:02,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:02,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1450468427, now seen corresponding path program 1 times [2023-11-06 22:12:02,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:02,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025966492] [2023-11-06 22:12:02,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:02,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:02,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:02,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:02,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:12:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:03,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:12:03,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,033 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 22:12:03,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:03,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025966492] [2023-11-06 22:12:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025966492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:03,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:03,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:03,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071785777] [2023-11-06 22:12:03,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:03,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:03,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:03,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:03,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 263 [2023-11-06 22:12:03,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 22:12:03,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:03,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 263 [2023-11-06 22:12:03,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:03,151 INFO L124 PetriNetUnfolderBase]: 83/166 cut-off events. [2023-11-06 22:12:03,151 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-06 22:12:03,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 166 events. 83/166 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 587 event pairs, 38 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 389. Up to 132 conditions per place. [2023-11-06 22:12:03,153 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 26 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-06 22:12:03,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 152 flow [2023-11-06 22:12:03,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-11-06 22:12:03,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.458808618504436 [2023-11-06 22:12:03,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-11-06 22:12:03,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-11-06 22:12:03,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:03,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-11-06 22:12:03,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 22:12:03,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:03,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:03,163 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 64 flow. Second operand 3 states and 362 transitions. [2023-11-06 22:12:03,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 152 flow [2023-11-06 22:12:03,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 29 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:12:03,165 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 70 flow [2023-11-06 22:12:03,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-06 22:12:03,167 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 4 predicate places. [2023-11-06 22:12:03,167 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 70 flow [2023-11-06 22:12:03,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 22:12:03,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:03,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:03,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:03,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:03,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash 2001903014, now seen corresponding path program 1 times [2023-11-06 22:12:03,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366041430] [2023-11-06 22:12:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:03,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:03,383 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:12:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:03,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:12:03,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:03,561 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 22:12:03,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:03,562 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:03,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366041430] [2023-11-06 22:12:03,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366041430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:03,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:03,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:12:03,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151559726] [2023-11-06 22:12:03,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:03,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 263 [2023-11-06 22:12:03,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:03,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:03,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 263 [2023-11-06 22:12:03,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:03,707 INFO L124 PetriNetUnfolderBase]: 72/144 cut-off events. [2023-11-06 22:12:03,708 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-06 22:12:03,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373 conditions, 144 events. 72/144 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 494 event pairs, 42 based on Foata normal form. 11/131 useless extension candidates. Maximal degree in co-relation 366. Up to 141 conditions per place. [2023-11-06 22:12:03,709 INFO L140 encePairwiseOnDemand]: 261/263 looper letters, 11 selfloop transitions, 1 changer transitions 6/19 dead transitions. [2023-11-06 22:12:03,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 19 transitions, 104 flow [2023-11-06 22:12:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-06 22:12:03,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43979721166032953 [2023-11-06 22:12:03,712 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-06 22:12:03,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-06 22:12:03,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:03,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-06 22:12:03,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 22:12:03,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:03,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:03,718 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 70 flow. Second operand 3 states and 347 transitions. [2023-11-06 22:12:03,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 19 transitions, 104 flow [2023-11-06 22:12:03,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 19 transitions, 100 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:03,723 INFO L231 Difference]: Finished difference. Result has 25 places, 13 transitions, 44 flow [2023-11-06 22:12:03,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=25, PETRI_TRANSITIONS=13} [2023-11-06 22:12:03,726 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 3 predicate places. [2023-11-06 22:12:03,726 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 13 transitions, 44 flow [2023-11-06 22:12:03,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:12:03,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:03,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:03,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:03,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:03,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2130813702, now seen corresponding path program 1 times [2023-11-06 22:12:03,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:03,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011318881] [2023-11-06 22:12:03,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:03,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:03,942 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:03,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:12:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:04,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:12:04,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:04,065 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 22:12:04,066 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:04,066 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:04,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011318881] [2023-11-06 22:12:04,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011318881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:04,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:04,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:12:04,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462042773] [2023-11-06 22:12:04,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:04,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:12:04,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:12:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:12:04,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 263 [2023-11-06 22:12:04,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 13 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:12:04,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:04,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 263 [2023-11-06 22:12:04,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:04,120 INFO L124 PetriNetUnfolderBase]: 13/47 cut-off events. [2023-11-06 22:12:04,120 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:12:04,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 47 events. 13/47 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 145 event pairs, 4 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 113. Up to 27 conditions per place. [2023-11-06 22:12:04,121 INFO L140 encePairwiseOnDemand]: 260/263 looper letters, 11 selfloop transitions, 2 changer transitions 0/14 dead transitions. [2023-11-06 22:12:04,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 14 transitions, 74 flow [2023-11-06 22:12:04,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:12:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:12:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-06 22:12:04,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385297845373891 [2023-11-06 22:12:04,124 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-06 22:12:04,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-06 22:12:04,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:04,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-06 22:12:04,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 22:12:04,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:04,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 263.0) internal successors, (1052), 4 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 22:12:04,130 INFO L175 Difference]: Start difference. First operand has 25 places, 13 transitions, 44 flow. Second operand 3 states and 346 transitions. [2023-11-06 22:12:04,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 14 transitions, 74 flow [2023-11-06 22:12:04,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 71 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:04,132 INFO L231 Difference]: Finished difference. Result has 21 places, 12 transitions, 43 flow [2023-11-06 22:12:04,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=43, PETRI_PLACES=21, PETRI_TRANSITIONS=12} [2023-11-06 22:12:04,133 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, -1 predicate places. [2023-11-06 22:12:04,133 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 12 transitions, 43 flow [2023-11-06 22:12:04,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 22:12:04,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:04,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:04,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:04,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:04,346 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:04,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1634456604, now seen corresponding path program 1 times [2023-11-06 22:12:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:04,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136969144] [2023-11-06 22:12:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:12:04,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:04,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:04,349 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:04,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:12:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:12:04,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:12:04,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:12:04,494 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 22:12:04,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:12:04,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:12:04,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136969144] [2023-11-06 22:12:04,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136969144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:12:04,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:12:04,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:12:04,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835043991] [2023-11-06 22:12:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:12:04,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:12:04,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:12:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:12:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:12:04,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 263 [2023-11-06 22:12:04,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 12 transitions, 43 flow. Second operand has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 22:12:04,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:12:04,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 263 [2023-11-06 22:12:04,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:12:04,723 INFO L124 PetriNetUnfolderBase]: 24/86 cut-off events. [2023-11-06 22:12:04,724 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:12:04,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 86 events. 24/86 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 335 event pairs, 12 based on Foata normal form. 2/88 useless extension candidates. Maximal degree in co-relation 213. Up to 47 conditions per place. [2023-11-06 22:12:04,726 INFO L140 encePairwiseOnDemand]: 258/263 looper letters, 19 selfloop transitions, 5 changer transitions 3/27 dead transitions. [2023-11-06 22:12:04,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 141 flow [2023-11-06 22:12:04,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:12:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:12:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 748 transitions. [2023-11-06 22:12:04,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40630092341118956 [2023-11-06 22:12:04,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 748 transitions. [2023-11-06 22:12:04,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 748 transitions. [2023-11-06 22:12:04,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:12:04,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 748 transitions. [2023-11-06 22:12:04,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.85714285714286) internal successors, (748), 7 states have internal predecessors, (748), 0 states have call successors, (0), 0 states 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 22:12:04,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states 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 22:12:04,746 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states 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 22:12:04,747 INFO L175 Difference]: Start difference. First operand has 21 places, 12 transitions, 43 flow. Second operand 7 states and 748 transitions. [2023-11-06 22:12:04,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 141 flow [2023-11-06 22:12:04,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 133 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:12:04,749 INFO L231 Difference]: Finished difference. Result has 29 places, 15 transitions, 70 flow [2023-11-06 22:12:04,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=263, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=15} [2023-11-06 22:12:04,750 INFO L281 CegarLoopForPetriNet]: 22 programPoint places, 7 predicate places. [2023-11-06 22:12:04,750 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 15 transitions, 70 flow [2023-11-06 22:12:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.83333333333333) internal successors, (629), 6 states have internal predecessors, (629), 0 states have call successors, (0), 0 states 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 22:12:04,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:12:04,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:04,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:04,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:04,963 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-06 22:12:04,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:12:04,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1633780612, now seen corresponding path program 2 times [2023-11-06 22:12:04,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:12:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954555093] [2023-11-06 22:12:04,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:12:04,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:04,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:12:04,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:12:04,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:12:05,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:12:05,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-06 22:12:05,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:12:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:12:05,110 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-06 22:12:05,110 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:12:05,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 5 remaining) [2023-11-06 22:12:05,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-06 22:12:05,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2023-11-06 22:12:05,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-06 22:12:05,114 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-06 22:12:05,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:12:05,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:12:05,324 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:12:05,328 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:12:05,328 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:12:05,359 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:12:05 BasicIcfg [2023-11-06 22:12:05,359 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:12:05,360 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:12:05,360 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:12:05,360 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:12:05,360 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:11:55" (3/4) ... [2023-11-06 22:12:05,362 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:12:05,364 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:12:05,365 INFO L158 Benchmark]: Toolchain (without parser) took 11601.39ms. Allocated memory was 67.1MB in the beginning and 107.0MB in the end (delta: 39.8MB). Free memory was 41.9MB in the beginning and 49.9MB in the end (delta: -8.0MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,365 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 67.1MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:12:05,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 773.16ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.7MB in the beginning and 57.1MB in the end (delta: -15.4MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,366 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.67ms. Allocated memory is still 88.1MB. Free memory was 57.1MB in the beginning and 54.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,367 INFO L158 Benchmark]: Boogie Preprocessor took 71.39ms. Allocated memory is still 88.1MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:12:05,367 INFO L158 Benchmark]: RCFGBuilder took 629.08ms. Allocated memory is still 88.1MB. Free memory was 52.9MB in the beginning and 61.3MB in the end (delta: -8.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,368 INFO L158 Benchmark]: TraceAbstraction took 10020.16ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 60.2MB in the beginning and 49.9MB in the end (delta: 10.3MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2023-11-06 22:12:05,368 INFO L158 Benchmark]: Witness Printer took 4.33ms. Allocated memory is still 107.0MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:12:05,371 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 67.1MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 773.16ms. Allocated memory was 67.1MB in the beginning and 88.1MB in the end (delta: 21.0MB). Free memory was 41.7MB in the beginning and 57.1MB in the end (delta: -15.4MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.67ms. Allocated memory is still 88.1MB. Free memory was 57.1MB in the beginning and 54.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.39ms. Allocated memory is still 88.1MB. Free memory was 54.7MB in the beginning and 52.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 629.08ms. Allocated memory is still 88.1MB. Free memory was 52.9MB in the beginning and 61.3MB in the end (delta: -8.3MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. * TraceAbstraction took 10020.16ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 60.2MB in the beginning and 49.9MB in the end (delta: 10.3MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. * Witness Printer took 4.33ms. Allocated memory is still 107.0MB. Free memory is still 49.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 118 PlacesBefore, 22 PlacesAfterwards, 121 TransitionsBefore, 21 TransitionsAfterwards, 3808 CoEnabledTransitionPairs, 6 FixpointIterations, 25 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 33 ConcurrentYvCompositions, 4 ChoiceCompositions, 141 TotalNumberOfCompositions, 4544 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3773, independent: 3670, independent conditional: 0, independent unconditional: 3670, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2364, independent: 2335, independent conditional: 0, independent unconditional: 2335, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3773, independent: 1335, independent conditional: 0, independent unconditional: 1335, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 2364, unknown conditional: 0, unknown unconditional: 2364] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 683]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 683. Possible FailurePath: [L697] 0 volatile int stoppingFlag; [L698] 0 volatile int pendingIo; [L699] 0 volatile int stoppingEvent; [L700] 0 volatile int stopped; [L756] 0 pthread_t t; [L757] 0 pendingIo = 1 [L758] 0 stoppingFlag = 0 [L759] 0 stoppingEvent = 0 [L760] 0 stopped = 0 [L761] FCALL, FORK 0 pthread_create(&t, 0, BCSP_PnpStop, 0) VAL [pendingIo=1, pthread_create(&t, 0, BCSP_PnpStop, 0)=0, stopped=0, stoppingEvent=0, stoppingFlag=0, t={3:0}] [L762] CALL 0 BCSP_PnpAdd(0) [L734] 0 int status; [L735] CALL, EXPR 0 BCSP_IoIncrement() [L703] 0 int lsf = stoppingFlag; [L705] COND FALSE 0 !(\read(lsf)) VAL [lsf=0, pendingIo=1, stopped=0, stoppingEvent=0, stoppingFlag=0] [L745] 1 stoppingFlag = 1 [L747] CALL 1 BCSP_IoDecrement() [L725] 1 int pending; [L726] CALL, EXPR 1 dec() [L719] 1 pendingIo-- [L720] 1 int tmp = pendingIo; [L722] 1 return tmp; [L726] RET, EXPR 1 dec() [L726] 1 pending = dec() [L727] COND TRUE 1 pending == 0 [L729] 1 stoppingEvent = 1 VAL [pending=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L709] 0 int lp = pendingIo; VAL [lp=0, lsf=0, pendingIo=0, stopped=0, stoppingEvent=1, stoppingFlag=1] [L747] RET 1 BCSP_IoDecrement() [L749] 1 int lse = stoppingEvent; [L751] CALL 1 assume_abort_if_not(lse) [L686] COND FALSE 1 !(!cond) [L751] RET 1 assume_abort_if_not(lse) [L712] EXPR 0 pendingIo = lp + 1 [L707-L714] 0 { __VERIFIER_atomic_begin(); int lp = pendingIo; __VERIFIER_atomic_end(); __VERIFIER_atomic_begin(); pendingIo = lp + 1; __VERIFIER_atomic_end(); } [L715] 0 return 0; [L735] RET, EXPR 0 BCSP_IoIncrement() [L752] 1 stopped = 1 [L753] 1 return 0; [L735] 0 status = BCSP_IoIncrement() [L736] COND TRUE 0 status == 0 [L737] 0 int local_assertion = !stopped; [L738] CALL 0 __VERIFIER_assert(local_assertion) [L689] COND TRUE 0 !(cond) [L690] CALL 0 reach_error() [L683] COND FALSE 0 !(0) [L683] 0 __assert_fail ("0", "assert.h", 6, __extension__ __PRETTY_FUNCTION__) VAL [pendingIo=1, stopped=1, stoppingEvent=1, stoppingFlag=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 144 locations, 5 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: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 156 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 89 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 19 mSDtfsCounter, 341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 4 NumberOfNonLiveVariables, 321 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:12:05,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edc213e6-7560-42eb-8aea-45e8554f1669/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: UNKNOWN: Overapproximated counterexample