./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:54:41,630 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:54:41,754 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:54:41,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:54:41,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:54:41,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:54:41,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:54:41,807 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:54:41,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:54:41,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:54:41,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:54:41,816 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:54:41,817 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:54:41,819 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:54:41,819 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:54:41,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:54:41,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:54:41,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:54:41,822 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:54:41,823 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:54:41,823 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:54:41,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:54:41,825 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:54:41,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:54:41,826 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:54:41,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:54:41,827 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:54:41,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:54:41,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:54:41,829 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:41,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:54:41,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:54:41,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:54:41,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:54:41,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:54:41,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:54:41,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:54:41,833 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:54:41,834 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_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 673666cb71096405cc13bacc98be08aac7026343d1cf8127c7ee9fffc801c83e [2023-11-19 07:54:42,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:54:42,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:54:42,196 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:54:42,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:54:42,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:54:42,200 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2023-11-19 07:54:45,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:54:45,603 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:54:45,604 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/sv-benchmarks/c/weaver/parallel-bluetooth.wvr.c [2023-11-19 07:54:45,615 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/data/2e87fb99d/d1c5ad2d5e934c84a8b8b3cc8620ac20/FLAG55154c8ea [2023-11-19 07:54:45,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/data/2e87fb99d/d1c5ad2d5e934c84a8b8b3cc8620ac20 [2023-11-19 07:54:45,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:54:45,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:54:45,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:45,660 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:54:45,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:54:45,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:45,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7458ce9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45, skipping insertion in model container [2023-11-19 07:54:45,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:45,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:54:45,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:45,894 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:54:45,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:54:45,933 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:45,933 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:54:45,942 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:54:45,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45 WrapperNode [2023-11-19 07:54:45,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:54:45,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:45,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:54:45,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:54:45,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:45,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:45,991 INFO L138 Inliner]: procedures = 21, calls = 49, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 127 [2023-11-19 07:54:45,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:54:45,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:54:45,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:54:45,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:54:46,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,008 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,018 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,031 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:54:46,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:54:46,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:54:46,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:54:46,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (1/1) ... [2023-11-19 07:54:46,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:54:46,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:54:46,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:54:46,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:54:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:54:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:54:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:54:46,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:54:46,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:54:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:54:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:54:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:54:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:54:46,120 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:54:46,221 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:54:46,223 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:54:46,651 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:54:46,720 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:54:46,720 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:54:46,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:46 BoogieIcfgContainer [2023-11-19 07:54:46,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:54:46,729 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:54:46,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:54:46,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:54:46,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:54:45" (1/3) ... [2023-11-19 07:54:46,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f11399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:46, skipping insertion in model container [2023-11-19 07:54:46,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:54:45" (2/3) ... [2023-11-19 07:54:46,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48f11399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:54:46, skipping insertion in model container [2023-11-19 07:54:46,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:46" (3/3) ... [2023-11-19 07:54:46,737 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2023-11-19 07:54:46,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:54:46,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-19 07:54:46,759 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:54:46,848 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:54:46,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 158 transitions, 330 flow [2023-11-19 07:54:47,008 INFO L124 PetriNetUnfolderBase]: 9/156 cut-off events. [2023-11-19 07:54:47,008 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:47,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 156 events. 9/156 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-11-19 07:54:47,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 158 transitions, 330 flow [2023-11-19 07:54:47,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 151 transitions, 314 flow [2023-11-19 07:54:47,057 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:54:47,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 151 transitions, 314 flow [2023-11-19 07:54:47,072 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 151 transitions, 314 flow [2023-11-19 07:54:47,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 151 transitions, 314 flow [2023-11-19 07:54:47,138 INFO L124 PetriNetUnfolderBase]: 9/151 cut-off events. [2023-11-19 07:54:47,141 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:54:47,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 9/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 109. Up to 2 conditions per place. [2023-11-19 07:54:47,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 690 [2023-11-19 07:54:53,058 INFO L134 LiptonReduction]: Checked pairs total: 3673 [2023-11-19 07:54:53,058 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-11-19 07:54:53,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:54:53,085 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;@6b1f81b0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:54:53,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 07:54:53,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:54:53,088 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-19 07:54:53,088 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:54:53,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:53,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:54:53,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:53,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:53,096 INFO L85 PathProgramCache]: Analyzing trace with hash 614, now seen corresponding path program 1 times [2023-11-19 07:54:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:53,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176962850] [2023-11-19 07:54:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:53,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:53,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176962850] [2023-11-19 07:54:53,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176962850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:54:53,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633575002] [2023-11-19 07:54:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:53,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:54:53,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:53,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:54:53,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:54:53,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 333 [2023-11-19 07:54:53,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:53,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 333 [2023-11-19 07:54:53,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:53,509 INFO L124 PetriNetUnfolderBase]: 241/421 cut-off events. [2023-11-19 07:54:53,510 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-19 07:54:53,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 421 events. 241/421 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1498 event pairs, 189 based on Foata normal form. 0/339 useless extension candidates. Maximal degree in co-relation 709. Up to 401 conditions per place. [2023-11-19 07:54:53,521 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 26 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-11-19 07:54:53,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 120 flow [2023-11-19 07:54:53,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:54:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:54:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 311 transitions. [2023-11-19 07:54:53,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.466966966966967 [2023-11-19 07:54:53,553 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 311 transitions. [2023-11-19 07:54:53,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 311 transitions. [2023-11-19 07:54:53,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:53,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 311 transitions. [2023-11-19 07:54:53,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.5) internal successors, (311), 2 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,582 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,585 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 74 flow. Second operand 2 states and 311 transitions. [2023-11-19 07:54:53,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 120 flow [2023-11-19 07:54:53,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:54:53,592 INFO L231 Difference]: Finished difference. Result has 30 places, 28 transitions, 60 flow [2023-11-19 07:54:53,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=28} [2023-11-19 07:54:53,604 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-19 07:54:53,605 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 28 transitions, 60 flow [2023-11-19 07:54:53,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:53,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:54:53,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:54:53,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:53,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:53,610 INFO L85 PathProgramCache]: Analyzing trace with hash 602186, now seen corresponding path program 1 times [2023-11-19 07:54:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:53,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661376530] [2023-11-19 07:54:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:53,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:53,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:53,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661376530] [2023-11-19 07:54:53,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661376530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:53,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:53,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:53,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581301471] [2023-11-19 07:54:53,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:53,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:53,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 333 [2023-11-19 07:54:53,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 28 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:53,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:53,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 333 [2023-11-19 07:54:53,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:54,078 INFO L124 PetriNetUnfolderBase]: 230/398 cut-off events. [2023-11-19 07:54:54,078 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:54,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 398 events. 230/398 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1381 event pairs, 180 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 781. Up to 378 conditions per place. [2023-11-19 07:54:54,085 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 23 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-19 07:54:54,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 104 flow [2023-11-19 07:54:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:54,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-11-19 07:54:54,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4194194194194194 [2023-11-19 07:54:54,091 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-11-19 07:54:54,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-11-19 07:54:54,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:54,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-11-19 07:54:54,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,106 INFO L175 Difference]: Start difference. First operand has 30 places, 28 transitions, 60 flow. Second operand 3 states and 419 transitions. [2023-11-19 07:54:54,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 104 flow [2023-11-19 07:54:54,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:54:54,109 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 58 flow [2023-11-19 07:54:54,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2023-11-19 07:54:54,110 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-19 07:54:54,111 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 58 flow [2023-11-19 07:54:54,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:54,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:54:54,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:54:54,113 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:54,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:54,113 INFO L85 PathProgramCache]: Analyzing trace with hash 602185, now seen corresponding path program 1 times [2023-11-19 07:54:54,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:54,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199234067] [2023-11-19 07:54:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:54,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:54,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199234067] [2023-11-19 07:54:54,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199234067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:54,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:54,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21260598] [2023-11-19 07:54:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:54,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:54,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:54,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 333 [2023-11-19 07:54:54,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:54,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 333 [2023-11-19 07:54:54,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:54,428 INFO L124 PetriNetUnfolderBase]: 219/375 cut-off events. [2023-11-19 07:54:54,428 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:54,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 375 events. 219/375 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1271 event pairs, 171 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 737. Up to 356 conditions per place. [2023-11-19 07:54:54,432 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 21 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 07:54:54,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 24 transitions, 98 flow [2023-11-19 07:54:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:54,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-11-19 07:54:54,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2023-11-19 07:54:54,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-11-19 07:54:54,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-11-19 07:54:54,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:54,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-11-19 07:54:54,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,445 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 58 flow. Second operand 3 states and 429 transitions. [2023-11-19 07:54:54,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 24 transitions, 98 flow [2023-11-19 07:54:54,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:54,447 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 55 flow [2023-11-19 07:54:54,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-19 07:54:54,449 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-11-19 07:54:54,449 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 55 flow [2023-11-19 07:54:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:54,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:54:54,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:54:54,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:54,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:54,458 INFO L85 PathProgramCache]: Analyzing trace with hash 578714803, now seen corresponding path program 1 times [2023-11-19 07:54:54,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:54,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866404288] [2023-11-19 07:54:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:54,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:54,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866404288] [2023-11-19 07:54:54,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866404288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:54,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:54,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:54:54,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463664852] [2023-11-19 07:54:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:54,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:54,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:54,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 333 [2023-11-19 07:54:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 333 [2023-11-19 07:54:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:54,700 INFO L124 PetriNetUnfolderBase]: 163/287 cut-off events. [2023-11-19 07:54:54,700 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:54,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 287 events. 163/287 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 895 event pairs, 126 based on Foata normal form. 0/256 useless extension candidates. Maximal degree in co-relation 566. Up to 272 conditions per place. [2023-11-19 07:54:54,703 INFO L140 encePairwiseOnDemand]: 331/333 looper letters, 20 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-19 07:54:54,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 95 flow [2023-11-19 07:54:54,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:54,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:54,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-11-19 07:54:54,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4184184184184184 [2023-11-19 07:54:54,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-11-19 07:54:54,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-11-19 07:54:54,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:54,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-11-19 07:54:54,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,713 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,713 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 55 flow. Second operand 3 states and 418 transitions. [2023-11-19 07:54:54,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 95 flow [2023-11-19 07:54:54,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:54,715 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 54 flow [2023-11-19 07:54:54,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-19 07:54:54,717 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-11-19 07:54:54,717 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 54 flow [2023-11-19 07:54:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:54,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:54:54,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:54:54,719 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:54,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:54,719 INFO L85 PathProgramCache]: Analyzing trace with hash 578714804, now seen corresponding path program 1 times [2023-11-19 07:54:54,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:54,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198751202] [2023-11-19 07:54:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:54,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198751202] [2023-11-19 07:54:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198751202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:54,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:54,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949155130] [2023-11-19 07:54:54,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:54,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:54,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:54,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:54,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 333 [2023-11-19 07:54:54,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 54 flow. Second operand has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:54,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:54,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 333 [2023-11-19 07:54:54,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:55,008 INFO L124 PetriNetUnfolderBase]: 107/199 cut-off events. [2023-11-19 07:54:55,008 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:55,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 199 events. 107/199 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 561 event pairs, 81 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 395. Up to 188 conditions per place. [2023-11-19 07:54:55,010 INFO L140 encePairwiseOnDemand]: 331/333 looper letters, 19 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-19 07:54:55,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 22 transitions, 92 flow [2023-11-19 07:54:55,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:55,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-19 07:54:55,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024024024024024 [2023-11-19 07:54:55,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-19 07:54:55,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-19 07:54:55,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:55,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-19 07:54:55,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,020 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 54 flow. Second operand 3 states and 402 transitions. [2023-11-19 07:54:55,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 22 transitions, 92 flow [2023-11-19 07:54:55,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:55,021 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 53 flow [2023-11-19 07:54:55,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-11-19 07:54:55,022 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-11-19 07:54:55,022 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 53 flow [2023-11-19 07:54:55,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:55,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:54:55,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:55,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1005332427, now seen corresponding path program 1 times [2023-11-19 07:54:55,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86821520] [2023-11-19 07:54:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86821520] [2023-11-19 07:54:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86821520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:55,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964017712] [2023-11-19 07:54:55,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:54:55,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:54:55,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:54:55,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 333 [2023-11-19 07:54:55,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:55,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 333 [2023-11-19 07:54:55,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:55,224 INFO L124 PetriNetUnfolderBase]: 127/247 cut-off events. [2023-11-19 07:54:55,224 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:54:55,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 247 events. 127/247 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 839 event pairs, 61 based on Foata normal form. 10/255 useless extension candidates. Maximal degree in co-relation 493. Up to 121 conditions per place. [2023-11-19 07:54:55,227 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 31 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2023-11-19 07:54:55,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 151 flow [2023-11-19 07:54:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:54:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:54:55,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-11-19 07:54:55,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44644644644644643 [2023-11-19 07:54:55,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-11-19 07:54:55,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-11-19 07:54:55,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:55,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-11-19 07:54:55,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,238 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 53 flow. Second operand 3 states and 446 transitions. [2023-11-19 07:54:55,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 151 flow [2023-11-19 07:54:55,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:55,241 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 71 flow [2023-11-19 07:54:55,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-11-19 07:54:55,244 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-19 07:54:55,244 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 71 flow [2023-11-19 07:54:55,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:55,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:54:55,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:55,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1597016258, now seen corresponding path program 1 times [2023-11-19 07:54:55,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941756370] [2023-11-19 07:54:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941756370] [2023-11-19 07:54:55,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941756370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:54:55,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191346862] [2023-11-19 07:54:55,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:55,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:55,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:55,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 333 [2023-11-19 07:54:55,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:55,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 333 [2023-11-19 07:54:55,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:55,668 INFO L124 PetriNetUnfolderBase]: 130/264 cut-off events. [2023-11-19 07:54:55,668 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-19 07:54:55,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 264 events. 130/264 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 991 event pairs, 12 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 589. Up to 187 conditions per place. [2023-11-19 07:54:55,670 INFO L140 encePairwiseOnDemand]: 329/333 looper letters, 18 selfloop transitions, 2 changer transitions 26/48 dead transitions. [2023-11-19 07:54:55,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 48 transitions, 224 flow [2023-11-19 07:54:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:54:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:54:55,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 725 transitions. [2023-11-19 07:54:55,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2023-11-19 07:54:55,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 725 transitions. [2023-11-19 07:54:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 725 transitions. [2023-11-19 07:54:55,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:55,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 725 transitions. [2023-11-19 07:54:55,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,687 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 333.0) internal successors, (1998), 6 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,687 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 71 flow. Second operand 5 states and 725 transitions. [2023-11-19 07:54:55,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 48 transitions, 224 flow [2023-11-19 07:54:55,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 48 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:54:55,693 INFO L231 Difference]: Finished difference. Result has 36 places, 21 transitions, 68 flow [2023-11-19 07:54:55,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=21} [2023-11-19 07:54:55,695 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-19 07:54:55,695 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 21 transitions, 68 flow [2023-11-19 07:54:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:54:55,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:55,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:54:55,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-19 07:54:55,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:54:55,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2122080769, now seen corresponding path program 1 times [2023-11-19 07:54:55,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:54:55,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161256539] [2023-11-19 07:54:55,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:54:55,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:54:55,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:54:55,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:54:55,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:54:55,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161256539] [2023-11-19 07:54:55,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161256539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:54:55,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:54:55,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:54:55,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741068812] [2023-11-19 07:54:55,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:54:55,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:54:55,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:54:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:54:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:54:55,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 333 [2023-11-19 07:54:55,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 21 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:55,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:54:55,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 333 [2023-11-19 07:54:55,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:54:56,028 INFO L124 PetriNetUnfolderBase]: 11/41 cut-off events. [2023-11-19 07:54:56,028 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:54:56,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 41 events. 11/41 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 98. Up to 18 conditions per place. [2023-11-19 07:54:56,028 INFO L140 encePairwiseOnDemand]: 330/333 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-19 07:54:56,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 22 transitions, 108 flow [2023-11-19 07:54:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:54:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:54:56,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 565 transitions. [2023-11-19 07:54:56,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241741741741742 [2023-11-19 07:54:56,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 565 transitions. [2023-11-19 07:54:56,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 565 transitions. [2023-11-19 07:54:56,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:54:56,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 565 transitions. [2023-11-19 07:54:56,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.25) internal successors, (565), 4 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:56,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:56,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:56,037 INFO L175 Difference]: Start difference. First operand has 36 places, 21 transitions, 68 flow. Second operand 4 states and 565 transitions. [2023-11-19 07:54:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 22 transitions, 108 flow [2023-11-19 07:54:56,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 94 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-19 07:54:56,038 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-11-19 07:54:56,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=4, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-11-19 07:54:56,039 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-19 07:54:56,039 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-11-19 07:54:56,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:54:56,042 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-19 07:54:56,043 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-19 07:54:56,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-19 07:54:56,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-19 07:54:56,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-19 07:54:56,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-19 07:54:56,044 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-19 07:54:56,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:54:56,045 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:54:56,048 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:54:56,048 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:54:56,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:54:56 BasicIcfg [2023-11-19 07:54:56,052 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:54:56,053 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:54:56,053 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:54:56,053 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:54:56,054 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:54:46" (3/4) ... [2023-11-19 07:54:56,056 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:54:56,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-19 07:54:56,059 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-19 07:54:56,065 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2023-11-19 07:54:56,066 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 07:54:56,066 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:54:56,066 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:54:56,162 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:54:56,163 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:54:56,163 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:54:56,163 INFO L158 Benchmark]: Toolchain (without parser) took 10508.61ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 103.0MB in the beginning and 126.7MB in the end (delta: -23.6MB). Peak memory consumption was 38.4MB. Max. memory is 16.1GB. [2023-11-19 07:54:56,164 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:56,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.85ms. Allocated memory is still 134.2MB. Free memory was 102.6MB in the beginning and 91.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 07:54:56,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.65ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:54:56,165 INFO L158 Benchmark]: Boogie Preprocessor took 47.38ms. Allocated memory is still 134.2MB. Free memory was 89.5MB in the beginning and 88.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:56,165 INFO L158 Benchmark]: RCFGBuilder took 685.49ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 68.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 07:54:56,166 INFO L158 Benchmark]: TraceAbstraction took 9323.88ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 68.1MB in the beginning and 131.9MB in the end (delta: -63.8MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:54:56,166 INFO L158 Benchmark]: Witness Printer took 109.89ms. Allocated memory is still 195.0MB. Free memory was 131.9MB in the beginning and 126.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:54:56,168 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 134.2MB. Free memory is still 106.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.85ms. Allocated memory is still 134.2MB. Free memory was 102.6MB in the beginning and 91.6MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.65ms. Allocated memory is still 134.2MB. Free memory was 91.2MB in the beginning and 89.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.38ms. Allocated memory is still 134.2MB. Free memory was 89.5MB in the beginning and 88.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 685.49ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 68.9MB in the end (delta: 18.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9323.88ms. Allocated memory was 134.2MB in the beginning and 195.0MB in the end (delta: 60.8MB). Free memory was 68.1MB in the beginning and 131.9MB in the end (delta: -63.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 109.89ms. Allocated memory is still 195.0MB. Free memory was 131.9MB in the beginning and 126.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.0s, 149 PlacesBefore, 36 PlacesAfterwards, 151 TransitionsBefore, 31 TransitionsAfterwards, 690 CoEnabledTransitionPairs, 9 FixpointIterations, 116 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 175 TotalNumberOfCompositions, 3673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1379, independent: 1166, independent conditional: 0, independent unconditional: 1166, dependent: 213, dependent conditional: 0, dependent unconditional: 213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 364, independent: 342, independent conditional: 0, independent unconditional: 342, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1379, independent: 824, independent conditional: 0, independent unconditional: 824, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 364, unknown conditional: 0, unknown unconditional: 364] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 90]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 173 locations, 12 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: 9.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 369 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 199 mSDsluCounter, 49 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 444 IncrementalHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 41 mSDtfsCounter, 444 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 73 NumberOfCodeBlocks, 73 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 65 ConstructedInterpolants, 0 QuantifiedInterpolants, 433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:54:56,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b22fef-1a27-44fe-b136-ccbdd28f6062/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE