./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:16:39,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:16:39,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:16:39,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:16:39,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:16:39,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:16:39,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:16:39,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:16:39,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:16:39,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:16:39,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:16:39,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:16:39,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:16:39,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:16:39,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:16:39,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:16:39,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:16:39,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:16:39,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:16:39,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:16:39,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:16:39,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:16:39,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:16:39,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:16:39,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:16:39,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:16:39,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:16:39,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:16:39,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:16:39,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:16:39,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:16:39,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:16:39,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:16:39,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:16:39,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:16:39,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:16:39,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:16:39,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:16:39,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:16:39,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:16:39,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:16:39,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:16:39,819 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:16:39,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:16:39,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:16:39,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:16:39,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:16:39,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:16:39,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:16:39,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:16:39,824 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:16:39,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:16:39,825 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:16:39,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:16:39,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:16:39,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:16:39,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:16:39,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:16:39,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:16:39,827 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:16:39,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:16:39,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:16:39,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:16:39,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:16:39,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:16:39,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:16:39,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:39,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:16:39,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:16:39,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:16:39,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:16:39,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:16:39,831 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:16:39,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:16:39,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:16:39,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c35b909c90b92e30d40b0275e3d226db26dbebaf39dc73a31d7e72eee871d214 [2022-11-02 20:16:40,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:16:40,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:16:40,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:16:40,241 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:16:40,242 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:16:40,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-02 20:16:40,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/data/7520725c0/4ed8aa34f6164d6dae34b56be5be5031/FLAG2d81f8702 [2022-11-02 20:16:41,081 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:16:41,086 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/sv-benchmarks/c/pthread-atomic/lamport.i [2022-11-02 20:16:41,107 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/data/7520725c0/4ed8aa34f6164d6dae34b56be5be5031/FLAG2d81f8702 [2022-11-02 20:16:41,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/data/7520725c0/4ed8aa34f6164d6dae34b56be5be5031 [2022-11-02 20:16:41,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:16:41,395 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:16:41,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:41,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:16:41,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:16:41,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:41" (1/1) ... [2022-11-02 20:16:41,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16ad66a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:41, skipping insertion in model container [2022-11-02 20:16:41,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:16:41" (1/1) ... [2022-11-02 20:16:41,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:16:41,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:16:41,747 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:16:42,002 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-02 20:16:42,016 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-02 20:16:42,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:42,043 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:16:42,074 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-02 20:16:42,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/sv-benchmarks/c/pthread-atomic/lamport.i[32156,32169] [2022-11-02 20:16:42,130 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/sv-benchmarks/c/pthread-atomic/lamport.i[34083,34096] [2022-11-02 20:16:42,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:16:42,171 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:16:42,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42 WrapperNode [2022-11-02 20:16:42,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:16:42,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:42,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:16:42,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:16:42,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,230 INFO L138 Inliner]: procedures = 171, calls = 83, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-11-02 20:16:42,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:16:42,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:16:42,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:16:42,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:16:42,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,292 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:16:42,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:16:42,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:16:42,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:16:42,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (1/1) ... [2022-11-02 20:16:42,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:16:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:16:42,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:16:42,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:16:42,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:16:42,415 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-11-02 20:16:42,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-11-02 20:16:42,416 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-02 20:16:42,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-02 20:16:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:16:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:16:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:16:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:16:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:16:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:16:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:16:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:16:42,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:16:42,420 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:16:42,622 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:16:42,625 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:16:42,875 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:16:42,884 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:16:42,885 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-02 20:16:42,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:42 BoogieIcfgContainer [2022-11-02 20:16:42,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:16:42,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:16:42,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:16:42,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:16:42,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:16:41" (1/3) ... [2022-11-02 20:16:42,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96e3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:42, skipping insertion in model container [2022-11-02 20:16:42,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:16:42" (2/3) ... [2022-11-02 20:16:42,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f96e3c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:16:42, skipping insertion in model container [2022-11-02 20:16:42,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:42" (3/3) ... [2022-11-02 20:16:42,902 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2022-11-02 20:16:42,913 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:16:42,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:16:42,927 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:16:42,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:16:43,057 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:16:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 133 transitions, 282 flow [2022-11-02 20:16:43,242 INFO L130 PetriNetUnfolder]: 24/131 cut-off events. [2022-11-02 20:16:43,242 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:16:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 24/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 255 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 97. Up to 5 conditions per place. [2022-11-02 20:16:43,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 133 transitions, 282 flow [2022-11-02 20:16:43,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 121 transitions, 251 flow [2022-11-02 20:16:43,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:16:43,300 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@48249598, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:16:43,301 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 20:16:43,331 INFO L130 PetriNetUnfolder]: 2/38 cut-off events. [2022-11-02 20:16:43,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:16:43,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:43,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:43,333 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 513087575, now seen corresponding path program 1 times [2022-11-02 20:16:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:43,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605854528] [2022-11-02 20:16:43,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:43,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:43,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605854528] [2022-11-02 20:16:43,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605854528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:43,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:43,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:16:43,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833526794] [2022-11-02 20:16:43,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:43,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:16:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:16:43,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:16:43,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 133 [2022-11-02 20:16:43,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 251 flow. Second operand has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:43,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:43,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 133 [2022-11-02 20:16:43,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:43,876 INFO L130 PetriNetUnfolder]: 12/109 cut-off events. [2022-11-02 20:16:43,881 INFO L131 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-11-02 20:16:43,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 109 events. 12/109 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 201 event pairs, 0 based on Foata normal form. 20/115 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2022-11-02 20:16:43,887 INFO L137 encePairwiseOnDemand]: 121/133 looper letters, 3 selfloop transitions, 0 changer transitions 0/109 dead transitions. [2022-11-02 20:16:43,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 109 transitions, 233 flow [2022-11-02 20:16:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:16:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:16:43,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2022-11-02 20:16:43,908 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9360902255639098 [2022-11-02 20:16:43,908 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2022-11-02 20:16:43,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2022-11-02 20:16:43,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:43,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2022-11-02 20:16:43,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:43,934 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:43,936 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 251 flow. Second operand 2 states and 249 transitions. [2022-11-02 20:16:43,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 109 transitions, 233 flow [2022-11-02 20:16:43,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 228 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:16:43,958 INFO L231 Difference]: Finished difference. Result has 102 places, 109 transitions, 222 flow [2022-11-02 20:16:43,960 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=109} [2022-11-02 20:16:43,970 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, -2 predicate places. [2022-11-02 20:16:43,970 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 109 transitions, 222 flow [2022-11-02 20:16:43,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 118.0) internal successors, (236), 2 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:43,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:43,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:43,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:16:43,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash 659391114, now seen corresponding path program 1 times [2022-11-02 20:16:43,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:43,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442729067] [2022-11-02 20:16:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:44,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:44,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442729067] [2022-11-02 20:16:44,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442729067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:44,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:44,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:16:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524026772] [2022-11-02 20:16:44,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:16:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:16:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:16:44,201 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-02 20:16:44,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 109 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:44,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-02 20:16:44,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:44,320 INFO L130 PetriNetUnfolder]: 31/215 cut-off events. [2022-11-02 20:16:44,321 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:16:44,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 215 events. 31/215 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 737 event pairs, 4 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 267. Up to 24 conditions per place. [2022-11-02 20:16:44,324 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 11 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2022-11-02 20:16:44,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 113 transitions, 259 flow [2022-11-02 20:16:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:16:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:16:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2022-11-02 20:16:44,329 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8671679197994987 [2022-11-02 20:16:44,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2022-11-02 20:16:44,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2022-11-02 20:16:44,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:44,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2022-11-02 20:16:44,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,335 INFO L175 Difference]: Start difference. First operand has 102 places, 109 transitions, 222 flow. Second operand 3 states and 346 transitions. [2022-11-02 20:16:44,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 113 transitions, 259 flow [2022-11-02 20:16:44,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 113 transitions, 259 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:16:44,340 INFO L231 Difference]: Finished difference. Result has 106 places, 110 transitions, 242 flow [2022-11-02 20:16:44,341 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=106, PETRI_TRANSITIONS=110} [2022-11-02 20:16:44,342 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 2 predicate places. [2022-11-02 20:16:44,342 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 110 transitions, 242 flow [2022-11-02 20:16:44,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:44,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:44,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:16:44,344 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:44,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:44,345 INFO L85 PathProgramCache]: Analyzing trace with hash 685275118, now seen corresponding path program 1 times [2022-11-02 20:16:44,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:44,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484556512] [2022-11-02 20:16:44,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:44,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:44,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:44,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484556512] [2022-11-02 20:16:44,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484556512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:44,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:44,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:16:44,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546199366] [2022-11-02 20:16:44,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:44,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:16:44,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:44,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:16:44,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:16:44,451 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-02 20:16:44,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 110 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:44,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-02 20:16:44,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:44,520 INFO L130 PetriNetUnfolder]: 25/196 cut-off events. [2022-11-02 20:16:44,520 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-02 20:16:44,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 196 events. 25/196 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 622 event pairs, 5 based on Foata normal form. 7/181 useless extension candidates. Maximal degree in co-relation 260. Up to 22 conditions per place. [2022-11-02 20:16:44,523 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 9 selfloop transitions, 2 changer transitions 1/111 dead transitions. [2022-11-02 20:16:44,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 111 transitions, 269 flow [2022-11-02 20:16:44,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:16:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:16:44,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2022-11-02 20:16:44,527 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8621553884711779 [2022-11-02 20:16:44,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2022-11-02 20:16:44,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2022-11-02 20:16:44,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:44,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2022-11-02 20:16:44,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,533 INFO L175 Difference]: Start difference. First operand has 106 places, 110 transitions, 242 flow. Second operand 3 states and 344 transitions. [2022-11-02 20:16:44,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 111 transitions, 269 flow [2022-11-02 20:16:44,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:16:44,538 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 246 flow [2022-11-02 20:16:44,538 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2022-11-02 20:16:44,539 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 3 predicate places. [2022-11-02 20:16:44,539 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 246 flow [2022-11-02 20:16:44,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:44,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:44,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:16:44,541 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1799529779, now seen corresponding path program 1 times [2022-11-02 20:16:44,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643616897] [2022-11-02 20:16:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:44,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:44,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:44,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643616897] [2022-11-02 20:16:44,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643616897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:44,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:44,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:44,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282643036] [2022-11-02 20:16:44,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:44,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:44,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:44,661 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2022-11-02 20:16:44,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:44,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:44,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2022-11-02 20:16:44,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:45,068 INFO L130 PetriNetUnfolder]: 451/1266 cut-off events. [2022-11-02 20:16:45,068 INFO L131 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-11-02 20:16:45,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2047 conditions, 1266 events. 451/1266 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8265 event pairs, 59 based on Foata normal form. 0/1087 useless extension candidates. Maximal degree in co-relation 2041. Up to 318 conditions per place. [2022-11-02 20:16:45,079 INFO L137 encePairwiseOnDemand]: 119/133 looper letters, 47 selfloop transitions, 5 changer transitions 26/160 dead transitions. [2022-11-02 20:16:45,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 160 transitions, 505 flow [2022-11-02 20:16:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:45,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-11-02 20:16:45,082 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8210526315789474 [2022-11-02 20:16:45,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-11-02 20:16:45,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-11-02 20:16:45,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:45,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-11-02 20:16:45,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,089 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 246 flow. Second operand 5 states and 546 transitions. [2022-11-02 20:16:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 160 transitions, 505 flow [2022-11-02 20:16:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 503 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:45,112 INFO L231 Difference]: Finished difference. Result has 114 places, 115 transitions, 320 flow [2022-11-02 20:16:45,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=114, PETRI_TRANSITIONS=115} [2022-11-02 20:16:45,114 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 10 predicate places. [2022-11-02 20:16:45,114 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 115 transitions, 320 flow [2022-11-02 20:16:45,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:45,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:45,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:16:45,116 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:45,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2101772067, now seen corresponding path program 2 times [2022-11-02 20:16:45,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:45,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63554281] [2022-11-02 20:16:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:45,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63554281] [2022-11-02 20:16:45,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63554281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:45,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:45,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482492717] [2022-11-02 20:16:45,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:45,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:45,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:45,208 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-02 20:16:45,209 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 320 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:45,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-02 20:16:45,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:45,554 INFO L130 PetriNetUnfolder]: 390/1753 cut-off events. [2022-11-02 20:16:45,554 INFO L131 PetriNetUnfolder]: For 246/251 co-relation queries the response was YES. [2022-11-02 20:16:45,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 1753 events. 390/1753 cut-off events. For 246/251 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 13913 event pairs, 31 based on Foata normal form. 0/1517 useless extension candidates. Maximal degree in co-relation 2687. Up to 200 conditions per place. [2022-11-02 20:16:45,574 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 22 selfloop transitions, 6 changer transitions 1/134 dead transitions. [2022-11-02 20:16:45,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 134 transitions, 421 flow [2022-11-02 20:16:45,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:45,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:45,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 580 transitions. [2022-11-02 20:16:45,577 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8721804511278195 [2022-11-02 20:16:45,577 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 580 transitions. [2022-11-02 20:16:45,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 580 transitions. [2022-11-02 20:16:45,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:45,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 580 transitions. [2022-11-02 20:16:45,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,583 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,583 INFO L175 Difference]: Start difference. First operand has 114 places, 115 transitions, 320 flow. Second operand 5 states and 580 transitions. [2022-11-02 20:16:45,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 134 transitions, 421 flow [2022-11-02 20:16:45,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 134 transitions, 405 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:45,597 INFO L231 Difference]: Finished difference. Result has 120 places, 121 transitions, 354 flow [2022-11-02 20:16:45,597 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=120, PETRI_TRANSITIONS=121} [2022-11-02 20:16:45,602 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 16 predicate places. [2022-11-02 20:16:45,602 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 121 transitions, 354 flow [2022-11-02 20:16:45,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:45,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:45,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:16:45,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:45,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1639744269, now seen corresponding path program 3 times [2022-11-02 20:16:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:45,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461008048] [2022-11-02 20:16:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:45,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:45,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461008048] [2022-11-02 20:16:45,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461008048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:45,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:45,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:45,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611515083] [2022-11-02 20:16:45,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:45,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:45,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:45,762 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 133 [2022-11-02 20:16:45,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:45,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:45,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 133 [2022-11-02 20:16:45,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:46,629 INFO L130 PetriNetUnfolder]: 1088/3500 cut-off events. [2022-11-02 20:16:46,630 INFO L131 PetriNetUnfolder]: For 1403/1449 co-relation queries the response was YES. [2022-11-02 20:16:46,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7120 conditions, 3500 events. 1088/3500 cut-off events. For 1403/1449 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 29983 event pairs, 159 based on Foata normal form. 19/3184 useless extension candidates. Maximal degree in co-relation 7108. Up to 932 conditions per place. [2022-11-02 20:16:46,660 INFO L137 encePairwiseOnDemand]: 119/133 looper letters, 63 selfloop transitions, 16 changer transitions 3/170 dead transitions. [2022-11-02 20:16:46,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 170 transitions, 657 flow [2022-11-02 20:16:46,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:46,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2022-11-02 20:16:46,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8195488721804511 [2022-11-02 20:16:46,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2022-11-02 20:16:46,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2022-11-02 20:16:46,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:46,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2022-11-02 20:16:46,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:46,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:46,670 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:46,670 INFO L175 Difference]: Start difference. First operand has 120 places, 121 transitions, 354 flow. Second operand 5 states and 545 transitions. [2022-11-02 20:16:46,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 170 transitions, 657 flow [2022-11-02 20:16:46,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 657 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:16:46,681 INFO L231 Difference]: Finished difference. Result has 128 places, 134 transitions, 492 flow [2022-11-02 20:16:46,682 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=492, PETRI_PLACES=128, PETRI_TRANSITIONS=134} [2022-11-02 20:16:46,685 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 24 predicate places. [2022-11-02 20:16:46,686 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 134 transitions, 492 flow [2022-11-02 20:16:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:46,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:46,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:46,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:16:46,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 776157919, now seen corresponding path program 4 times [2022-11-02 20:16:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496162572] [2022-11-02 20:16:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:46,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:46,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:46,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496162572] [2022-11-02 20:16:46,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496162572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:46,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:46,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102350472] [2022-11-02 20:16:46,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:46,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:46,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:46,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:46,816 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-11-02 20:16:46,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 134 transitions, 492 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:46,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:46,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-11-02 20:16:46,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:47,504 INFO L130 PetriNetUnfolder]: 692/3268 cut-off events. [2022-11-02 20:16:47,505 INFO L131 PetriNetUnfolder]: For 1989/2082 co-relation queries the response was YES. [2022-11-02 20:16:47,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 3268 events. 692/3268 cut-off events. For 1989/2082 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 29483 event pairs, 70 based on Foata normal form. 39/3168 useless extension candidates. Maximal degree in co-relation 6593. Up to 470 conditions per place. [2022-11-02 20:16:47,542 INFO L137 encePairwiseOnDemand]: 129/133 looper letters, 26 selfloop transitions, 11 changer transitions 0/155 dead transitions. [2022-11-02 20:16:47,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 155 transitions, 662 flow [2022-11-02 20:16:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 578 transitions. [2022-11-02 20:16:47,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.869172932330827 [2022-11-02 20:16:47,547 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 578 transitions. [2022-11-02 20:16:47,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 578 transitions. [2022-11-02 20:16:47,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:47,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 578 transitions. [2022-11-02 20:16:47,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.6) internal successors, (578), 5 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:47,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:47,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:47,556 INFO L175 Difference]: Start difference. First operand has 128 places, 134 transitions, 492 flow. Second operand 5 states and 578 transitions. [2022-11-02 20:16:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 155 transitions, 662 flow [2022-11-02 20:16:47,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 155 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:16:47,569 INFO L231 Difference]: Finished difference. Result has 136 places, 142 transitions, 586 flow [2022-11-02 20:16:47,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=586, PETRI_PLACES=136, PETRI_TRANSITIONS=142} [2022-11-02 20:16:47,571 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 32 predicate places. [2022-11-02 20:16:47,571 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 142 transitions, 586 flow [2022-11-02 20:16:47,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:47,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:47,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:47,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:16:47,573 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash 953619915, now seen corresponding path program 1 times [2022-11-02 20:16:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:47,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869300826] [2022-11-02 20:16:47,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:47,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:47,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869300826] [2022-11-02 20:16:47,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869300826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:47,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:47,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:47,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271904716] [2022-11-02 20:16:47,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:47,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:47,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:47,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:47,701 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2022-11-02 20:16:47,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 142 transitions, 586 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:47,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:47,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2022-11-02 20:16:47,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:48,400 INFO L130 PetriNetUnfolder]: 672/3164 cut-off events. [2022-11-02 20:16:48,400 INFO L131 PetriNetUnfolder]: For 1591/1644 co-relation queries the response was YES. [2022-11-02 20:16:48,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6493 conditions, 3164 events. 672/3164 cut-off events. For 1591/1644 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 29302 event pairs, 75 based on Foata normal form. 13/3055 useless extension candidates. Maximal degree in co-relation 6473. Up to 385 conditions per place. [2022-11-02 20:16:48,435 INFO L137 encePairwiseOnDemand]: 126/133 looper letters, 15 selfloop transitions, 10 changer transitions 5/155 dead transitions. [2022-11-02 20:16:48,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 155 transitions, 659 flow [2022-11-02 20:16:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:48,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 569 transitions. [2022-11-02 20:16:48,441 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8556390977443609 [2022-11-02 20:16:48,441 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 569 transitions. [2022-11-02 20:16:48,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 569 transitions. [2022-11-02 20:16:48,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:48,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 569 transitions. [2022-11-02 20:16:48,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:48,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:48,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:48,447 INFO L175 Difference]: Start difference. First operand has 136 places, 142 transitions, 586 flow. Second operand 5 states and 569 transitions. [2022-11-02 20:16:48,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 155 transitions, 659 flow [2022-11-02 20:16:48,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 155 transitions, 655 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-02 20:16:48,462 INFO L231 Difference]: Finished difference. Result has 143 places, 144 transitions, 615 flow [2022-11-02 20:16:48,463 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=615, PETRI_PLACES=143, PETRI_TRANSITIONS=144} [2022-11-02 20:16:48,463 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 39 predicate places. [2022-11-02 20:16:48,464 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 144 transitions, 615 flow [2022-11-02 20:16:48,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:48,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:16:48,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:16:48,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:16:48,465 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2022-11-02 20:16:48,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:16:48,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1878550952, now seen corresponding path program 1 times [2022-11-02 20:16:48,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:16:48,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46898661] [2022-11-02 20:16:48,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:16:48,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:16:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:16:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:16:48,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:16:48,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46898661] [2022-11-02 20:16:48,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46898661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:16:48,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:16:48,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:16:48,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690506938] [2022-11-02 20:16:48,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:16:48,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:16:48,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:16:48,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:16:48,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:16:48,570 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 133 [2022-11-02 20:16:48,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 144 transitions, 615 flow. Second operand has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:48,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:16:48,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 133 [2022-11-02 20:16:48,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:16:49,197 INFO L130 PetriNetUnfolder]: 623/2915 cut-off events. [2022-11-02 20:16:49,197 INFO L131 PetriNetUnfolder]: For 1357/1393 co-relation queries the response was YES. [2022-11-02 20:16:49,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 2915 events. 623/2915 cut-off events. For 1357/1393 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25995 event pairs, 63 based on Foata normal form. 8/2824 useless extension candidates. Maximal degree in co-relation 6271. Up to 348 conditions per place. [2022-11-02 20:16:49,226 INFO L137 encePairwiseOnDemand]: 126/133 looper letters, 0 selfloop transitions, 0 changer transitions 154/154 dead transitions. [2022-11-02 20:16:49,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 154 transitions, 674 flow [2022-11-02 20:16:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:16:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:16:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 570 transitions. [2022-11-02 20:16:49,234 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-02 20:16:49,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 570 transitions. [2022-11-02 20:16:49,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 570 transitions. [2022-11-02 20:16:49,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:16:49,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 570 transitions. [2022-11-02 20:16:49,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:49,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:49,241 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:49,242 INFO L175 Difference]: Start difference. First operand has 143 places, 144 transitions, 615 flow. Second operand 5 states and 570 transitions. [2022-11-02 20:16:49,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 154 transitions, 674 flow [2022-11-02 20:16:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 154 transitions, 660 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-02 20:16:49,260 INFO L231 Difference]: Finished difference. Result has 142 places, 0 transitions, 0 flow [2022-11-02 20:16:49,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=142, PETRI_TRANSITIONS=0} [2022-11-02 20:16:49,261 INFO L287 CegarLoopForPetriNet]: 104 programPoint places, 38 predicate places. [2022-11-02 20:16:49,262 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 0 transitions, 0 flow [2022-11-02 20:16:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:16:49,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-11-02 20:16:49,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-11-02 20:16:49,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2022-11-02 20:16:49,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2022-11-02 20:16:49,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-11-02 20:16:49,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-11-02 20:16:49,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:16:49,276 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2022-11-02 20:16:49,283 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:16:49,283 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:16:49,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:16:49 BasicIcfg [2022-11-02 20:16:49,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:16:49,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:16:49,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:16:49,296 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:16:49,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:16:42" (3/4) ... [2022-11-02 20:16:49,300 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:16:49,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2022-11-02 20:16:49,307 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2022-11-02 20:16:49,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-02 20:16:49,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:16:49,326 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:16:49,327 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:16:49,373 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:16:49,373 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:16:49,374 INFO L158 Benchmark]: Toolchain (without parser) took 7978.29ms. Allocated memory was 109.1MB in the beginning and 285.2MB in the end (delta: 176.2MB). Free memory was 68.7MB in the beginning and 189.4MB in the end (delta: -120.7MB). Peak memory consumption was 153.6MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,374 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 109.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:16:49,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.32ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 75.3MB in the end (delta: -6.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,375 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.05ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,375 INFO L158 Benchmark]: Boogie Preprocessor took 72.65ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 71.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,376 INFO L158 Benchmark]: RCFGBuilder took 584.41ms. Allocated memory is still 109.1MB. Free memory was 71.6MB in the beginning and 56.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,376 INFO L158 Benchmark]: TraceAbstraction took 6402.60ms. Allocated memory was 109.1MB in the beginning and 285.2MB in the end (delta: 176.2MB). Free memory was 56.1MB in the beginning and 97.5MB in the end (delta: -41.3MB). Peak memory consumption was 136.4MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,377 INFO L158 Benchmark]: Witness Printer took 77.24ms. Allocated memory is still 285.2MB. Free memory was 97.5MB in the beginning and 189.4MB in the end (delta: -91.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-02 20:16:49,379 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 109.1MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.32ms. Allocated memory is still 109.1MB. Free memory was 68.5MB in the beginning and 75.3MB in the end (delta: -6.9MB). Peak memory consumption was 10.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.05ms. Allocated memory is still 109.1MB. Free memory was 75.3MB in the beginning and 73.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.65ms. Allocated memory is still 109.1MB. Free memory was 73.2MB in the beginning and 71.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 584.41ms. Allocated memory is still 109.1MB. Free memory was 71.6MB in the beginning and 56.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6402.60ms. Allocated memory was 109.1MB in the beginning and 285.2MB in the end (delta: 176.2MB). Free memory was 56.1MB in the beginning and 97.5MB in the end (delta: -41.3MB). Peak memory consumption was 136.4MB. Max. memory is 16.1GB. * Witness Printer took 77.24ms. Allocated memory is still 285.2MB. Free memory was 97.5MB in the beginning and 189.4MB in the end (delta: -91.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 764]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 176 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 204 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 353 IncrementalHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 138 mSDtfsCounter, 353 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=615occurred in iteration=8, InterpolantAutomatonStates: 38, 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, 0.9s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 425 ConstructedInterpolants, 0 QuantifiedInterpolants, 591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:16:49,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c532060-73c9-4b5a-8bbb-48b0f4acf36b/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE