./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/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_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/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_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/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 b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 --- 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 21:03:02,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:03:02,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:03:02,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:03:02,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:03:02,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:03:02,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:03:02,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:03:02,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:03:02,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:03:02,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:03:02,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:03:02,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:03:02,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:03:02,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:03:02,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:03:02,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:03:02,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:03:02,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:03:03,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:03:03,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:03:03,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:03:03,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:03:03,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:03:03,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:03:03,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:03:03,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:03:03,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:03:03,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:03:03,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:03:03,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:03:03,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:03:03,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:03:03,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:03:03,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:03:03,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:03:03,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:03:03,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:03:03,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:03:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:03:03,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:03:03,045 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:03:03,069 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:03:03,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:03:03,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:03:03,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:03:03,071 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:03:03,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:03:03,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:03:03,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:03:03,072 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:03:03,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:03:03,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:03:03,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:03:03,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:03:03,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:03:03,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:03:03,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:03:03,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:03:03,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:03:03,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:03:03,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:03:03,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:03:03,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:03:03,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:03:03,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:03:03,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:03,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:03:03,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:03:03,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:03:03,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:03:03,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:03:03,078 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:03:03,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:03:03,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:03:03,078 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_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b27d2c0de3bd785d7b0c7ad6e06bc0deeddc3f352acc333757e88f24286e9797 [2022-11-02 21:03:03,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:03:03,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:03:03,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:03:03,501 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:03:03,502 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:03:03,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2022-11-02 21:03:03,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/data/3833a47d5/928b745f0b3f4d7ea94a9851729ed687/FLAG6599f907d [2022-11-02 21:03:04,208 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:03:04,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c [2022-11-02 21:03:04,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/data/3833a47d5/928b745f0b3f4d7ea94a9851729ed687/FLAG6599f907d [2022-11-02 21:03:04,539 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/data/3833a47d5/928b745f0b3f4d7ea94a9851729ed687 [2022-11-02 21:03:04,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:03:04,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:03:04,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:04,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:03:04,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:03:04,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fa7e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04, skipping insertion in model container [2022-11-02 21:03:04,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:03:04,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:03:04,834 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_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-11-02 21:03:04,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:04,848 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:03:04,872 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_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/sv-benchmarks/c/weaver/parallel-misc-2-unrolled.wvr.c[2332,2345] [2022-11-02 21:03:04,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:03:04,890 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:03:04,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04 WrapperNode [2022-11-02 21:03:04,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:03:04,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:04,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:03:04,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:03:04,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,934 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 60 [2022-11-02 21:03:04,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:03:04,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:03:04,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:03:04,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:03:04,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,975 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:04,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:03:04,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:03:04,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:03:04,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:03:04,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (1/1) ... [2022-11-02 21:03:05,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:03:05,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:05,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:03:05,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:03:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:03:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:03:05,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:03:05,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:03:05,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:03:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:03:05,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:03:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:03:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:03:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:03:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:03:05,098 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 21:03:05,225 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:03:05,228 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:03:05,456 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:03:05,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:03:05,492 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:03:05,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:05 BoogieIcfgContainer [2022-11-02 21:03:05,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:03:05,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:03:05,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:03:05,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:03:05,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:03:04" (1/3) ... [2022-11-02 21:03:05,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b904c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:05, skipping insertion in model container [2022-11-02 21:03:05,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:03:04" (2/3) ... [2022-11-02 21:03:05,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@789b904c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:03:05, skipping insertion in model container [2022-11-02 21:03:05,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:05" (3/3) ... [2022-11-02 21:03:05,507 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2022-11-02 21:03:05,518 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:03:05,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:03:05,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:03:05,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:03:05,627 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:03:05,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 212 flow [2022-11-02 21:03:05,768 INFO L130 PetriNetUnfolder]: 6/96 cut-off events. [2022-11-02 21:03:05,769 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:03:05,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-02 21:03:05,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 212 flow [2022-11-02 21:03:05,782 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2022-11-02 21:03:05,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:03:05,806 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;@7d4bb331, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:03:05,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 21:03:05,852 INFO L130 PetriNetUnfolder]: 6/86 cut-off events. [2022-11-02 21:03:05,853 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:03:05,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:05,854 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, 1, 1, 1, 1, 1] [2022-11-02 21:03:05,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -528998398, now seen corresponding path program 1 times [2022-11-02 21:03:05,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:05,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21431440] [2022-11-02 21:03:05,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:05,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,302 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 21:03:06,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:06,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21431440] [2022-11-02 21:03:06,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21431440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:06,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:06,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:03:06,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405349560] [2022-11-02 21:03:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:06,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:03:06,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:06,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:03:06,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:03:06,404 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 98 [2022-11-02 21:03:06,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 186 flow. Second operand has 2 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 21:03:06,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:06,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 98 [2022-11-02 21:03:06,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:06,517 INFO L130 PetriNetUnfolder]: 5/93 cut-off events. [2022-11-02 21:03:06,517 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-02 21:03:06,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 93 events. 5/93 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 2 based on Foata normal form. 8/96 useless extension candidates. Maximal degree in co-relation 59. Up to 11 conditions per place. [2022-11-02 21:03:06,521 INFO L137 encePairwiseOnDemand]: 94/98 looper letters, 6 selfloop transitions, 0 changer transitions 2/83 dead transitions. [2022-11-02 21:03:06,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 83 transitions, 190 flow [2022-11-02 21:03:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:03:06,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 21:03:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2022-11-02 21:03:06,539 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9387755102040817 [2022-11-02 21:03:06,540 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2022-11-02 21:03:06,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2022-11-02 21:03:06,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:06,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2022-11-02 21:03:06,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 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 21:03:06,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 21:03:06,555 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 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 21:03:06,557 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 186 flow. Second operand 2 states and 184 transitions. [2022-11-02 21:03:06,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 83 transitions, 190 flow [2022-11-02 21:03:06,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 83 transitions, 182 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:03:06,566 INFO L231 Difference]: Finished difference. Result has 85 places, 81 transitions, 166 flow [2022-11-02 21:03:06,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=85, PETRI_TRANSITIONS=81} [2022-11-02 21:03:06,573 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2022-11-02 21:03:06,574 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 81 transitions, 166 flow [2022-11-02 21:03:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 90.0) internal successors, (180), 2 states have internal predecessors, (180), 0 states have call successors, (0), 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 21:03:06,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:06,575 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, 1, 1, 1, 1, 1] [2022-11-02 21:03:06,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:03:06,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:06,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:06,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1275140960, now seen corresponding path program 1 times [2022-11-02 21:03:06,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:06,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050575186] [2022-11-02 21:03:06,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:07,380 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 21:03:07,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:07,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050575186] [2022-11-02 21:03:07,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050575186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:07,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:07,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:07,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033458368] [2022-11-02 21:03:07,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:07,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:07,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:07,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 98 [2022-11-02 21:03:07,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 81 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 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 21:03:07,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:07,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 98 [2022-11-02 21:03:07,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:07,706 INFO L130 PetriNetUnfolder]: 19/145 cut-off events. [2022-11-02 21:03:07,707 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2022-11-02 21:03:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 145 events. 19/145 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 2 based on Foata normal form. 2/140 useless extension candidates. Maximal degree in co-relation 195. Up to 35 conditions per place. [2022-11-02 21:03:07,711 INFO L137 encePairwiseOnDemand]: 88/98 looper letters, 15 selfloop transitions, 7 changer transitions 4/89 dead transitions. [2022-11-02 21:03:07,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 237 flow [2022-11-02 21:03:07,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:07,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:03:07,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2022-11-02 21:03:07,722 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7842565597667639 [2022-11-02 21:03:07,726 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2022-11-02 21:03:07,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2022-11-02 21:03:07,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:07,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2022-11-02 21:03:07,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 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 21:03:07,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 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 21:03:07,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 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 21:03:07,743 INFO L175 Difference]: Start difference. First operand has 85 places, 81 transitions, 166 flow. Second operand 7 states and 538 transitions. [2022-11-02 21:03:07,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 237 flow [2022-11-02 21:03:07,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 237 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 21:03:07,754 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 199 flow [2022-11-02 21:03:07,756 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2022-11-02 21:03:07,757 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 4 predicate places. [2022-11-02 21:03:07,757 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 199 flow [2022-11-02 21:03:07,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 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 21:03:07,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:07,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:03:07,760 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:07,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:07,763 INFO L85 PathProgramCache]: Analyzing trace with hash -953114557, now seen corresponding path program 1 times [2022-11-02 21:03:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:07,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920761595] [2022-11-02 21:03:07,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:08,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:08,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920761595] [2022-11-02 21:03:08,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920761595] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184310348] [2022-11-02 21:03:08,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:08,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:08,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:08,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:08,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:03:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:08,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:03:08,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:09,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:09,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:09,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184310348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:09,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:09,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-02 21:03:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140020321] [2022-11-02 21:03:09,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:03:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:03:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:03:09,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 98 [2022-11-02 21:03:09,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 199 flow. Second operand has 13 states, 13 states have (on average 62.76923076923077) internal successors, (816), 13 states have internal predecessors, (816), 0 states have call successors, (0), 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 21:03:09,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:09,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 98 [2022-11-02 21:03:09,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:10,421 INFO L130 PetriNetUnfolder]: 132/452 cut-off events. [2022-11-02 21:03:10,421 INFO L131 PetriNetUnfolder]: For 37/43 co-relation queries the response was YES. [2022-11-02 21:03:10,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825 conditions, 452 events. 132/452 cut-off events. For 37/43 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2205 event pairs, 33 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 818. Up to 111 conditions per place. [2022-11-02 21:03:10,427 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 63 selfloop transitions, 14 changer transitions 1/128 dead transitions. [2022-11-02 21:03:10,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 128 transitions, 466 flow [2022-11-02 21:03:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:03:10,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 670 transitions. [2022-11-02 21:03:10,431 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2022-11-02 21:03:10,431 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 670 transitions. [2022-11-02 21:03:10,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 670 transitions. [2022-11-02 21:03:10,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:10,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 670 transitions. [2022-11-02 21:03:10,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 67.0) internal successors, (670), 10 states have internal predecessors, (670), 0 states have call successors, (0), 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 21:03:10,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 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 21:03:10,438 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 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 21:03:10,438 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 199 flow. Second operand 10 states and 670 transitions. [2022-11-02 21:03:10,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 128 transitions, 466 flow [2022-11-02 21:03:10,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 128 transitions, 449 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-02 21:03:10,443 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 266 flow [2022-11-02 21:03:10,444 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=266, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2022-11-02 21:03:10,445 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2022-11-02 21:03:10,445 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 266 flow [2022-11-02 21:03:10,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.76923076923077) internal successors, (816), 13 states have internal predecessors, (816), 0 states have call successors, (0), 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 21:03:10,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:10,447 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:10,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:10,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:10,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:10,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash -287001359, now seen corresponding path program 2 times [2022-11-02 21:03:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:10,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772993150] [2022-11-02 21:03:10,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:10,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:11,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772993150] [2022-11-02 21:03:11,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772993150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:11,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:11,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:03:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113481357] [2022-11-02 21:03:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:11,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:03:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:03:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:03:11,014 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 98 [2022-11-02 21:03:11,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:11,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:11,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 98 [2022-11-02 21:03:11,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:11,441 INFO L130 PetriNetUnfolder]: 159/470 cut-off events. [2022-11-02 21:03:11,441 INFO L131 PetriNetUnfolder]: For 276/290 co-relation queries the response was YES. [2022-11-02 21:03:11,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1099 conditions, 470 events. 159/470 cut-off events. For 276/290 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2208 event pairs, 53 based on Foata normal form. 5/471 useless extension candidates. Maximal degree in co-relation 1090. Up to 238 conditions per place. [2022-11-02 21:03:11,447 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 51 selfloop transitions, 9 changer transitions 7/112 dead transitions. [2022-11-02 21:03:11,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 112 transitions, 491 flow [2022-11-02 21:03:11,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:03:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 444 transitions. [2022-11-02 21:03:11,450 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6472303206997084 [2022-11-02 21:03:11,450 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 444 transitions. [2022-11-02 21:03:11,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 444 transitions. [2022-11-02 21:03:11,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:11,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 444 transitions. [2022-11-02 21:03:11,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.42857142857143) internal successors, (444), 7 states have internal predecessors, (444), 0 states have call successors, (0), 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 21:03:11,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 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 21:03:11,456 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 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 21:03:11,456 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 266 flow. Second operand 7 states and 444 transitions. [2022-11-02 21:03:11,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 112 transitions, 491 flow [2022-11-02 21:03:11,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 112 transitions, 485 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 21:03:11,462 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 287 flow [2022-11-02 21:03:11,463 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=287, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-11-02 21:03:11,464 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 16 predicate places. [2022-11-02 21:03:11,464 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 287 flow [2022-11-02 21:03:11,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:11,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:11,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:03:11,466 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:11,466 INFO L85 PathProgramCache]: Analyzing trace with hash -2015969152, now seen corresponding path program 1 times [2022-11-02 21:03:11,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:11,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412632750] [2022-11-02 21:03:11,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:11,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412632750] [2022-11-02 21:03:11,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412632750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869419834] [2022-11-02 21:03:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:11,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:11,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:11,744 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:11,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:03:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:11,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:03:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:12,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:14,260 WARN L833 $PredicateComparison]: unable to prove that (forall ((~N~0 Int)) (let ((.cse0 (* 2 ~N~0))) (or (<= (+ c_~i1~0 (* 4294967296 (div .cse0 4294967296)) 1) (+ .cse0 (* 4294967296 (div c_~i1~0 4294967296)))) (not (< (mod c_~i2~0 4294967296) (mod .cse0 4294967296)))))) is different from false [2022-11-02 21:03:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-02 21:03:14,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869419834] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:14,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-02 21:03:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301633687] [2022-11-02 21:03:14,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:03:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:03:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=91, Unknown=1, NotChecked=20, Total=156 [2022-11-02 21:03:14,751 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 98 [2022-11-02 21:03:14,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 287 flow. Second operand has 13 states, 13 states have (on average 62.46153846153846) internal successors, (812), 13 states have internal predecessors, (812), 0 states have call successors, (0), 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 21:03:14,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:14,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 98 [2022-11-02 21:03:14,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:15,309 INFO L130 PetriNetUnfolder]: 136/426 cut-off events. [2022-11-02 21:03:15,309 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2022-11-02 21:03:15,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 426 events. 136/426 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1849 event pairs, 35 based on Foata normal form. 6/427 useless extension candidates. Maximal degree in co-relation 1015. Up to 146 conditions per place. [2022-11-02 21:03:15,315 INFO L137 encePairwiseOnDemand]: 87/98 looper letters, 56 selfloop transitions, 14 changer transitions 0/120 dead transitions. [2022-11-02 21:03:15,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 542 flow [2022-11-02 21:03:15,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:03:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 654 transitions. [2022-11-02 21:03:15,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6673469387755102 [2022-11-02 21:03:15,319 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 654 transitions. [2022-11-02 21:03:15,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 654 transitions. [2022-11-02 21:03:15,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:15,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 654 transitions. [2022-11-02 21:03:15,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.4) internal successors, (654), 10 states have internal predecessors, (654), 0 states have call successors, (0), 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 21:03:15,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 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 21:03:15,326 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 98.0) internal successors, (1078), 11 states have internal predecessors, (1078), 0 states have call successors, (0), 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 21:03:15,326 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 287 flow. Second operand 10 states and 654 transitions. [2022-11-02 21:03:15,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 542 flow [2022-11-02 21:03:15,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 120 transitions, 523 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-02 21:03:15,333 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 337 flow [2022-11-02 21:03:15,334 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=337, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2022-11-02 21:03:15,334 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 22 predicate places. [2022-11-02 21:03:15,335 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 337 flow [2022-11-02 21:03:15,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 62.46153846153846) internal successors, (812), 13 states have internal predecessors, (812), 0 states have call successors, (0), 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 21:03:15,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:15,336 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, 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 21:03:15,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:15,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:15,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash 643647787, now seen corresponding path program 1 times [2022-11-02 21:03:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:15,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531417527] [2022-11-02 21:03:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:15,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:16,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531417527] [2022-11-02 21:03:16,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531417527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691222161] [2022-11-02 21:03:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:16,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:16,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:16,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:16,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:03:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:16,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 21:03:16,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:16,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:16,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:03:16,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691222161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:16,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:03:16,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-11-02 21:03:16,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543747400] [2022-11-02 21:03:16,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:16,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 21:03:16,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 21:03:16,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:03:16,746 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 98 [2022-11-02 21:03:16,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 337 flow. Second operand has 15 states, 15 states have (on average 60.06666666666667) internal successors, (901), 15 states have internal predecessors, (901), 0 states have call successors, (0), 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 21:03:16,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:16,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 98 [2022-11-02 21:03:16,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:17,383 INFO L130 PetriNetUnfolder]: 172/472 cut-off events. [2022-11-02 21:03:17,383 INFO L131 PetriNetUnfolder]: For 681/681 co-relation queries the response was YES. [2022-11-02 21:03:17,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 472 events. 172/472 cut-off events. For 681/681 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2049 event pairs, 41 based on Foata normal form. 1/468 useless extension candidates. Maximal degree in co-relation 1279. Up to 108 conditions per place. [2022-11-02 21:03:17,386 INFO L137 encePairwiseOnDemand]: 86/98 looper letters, 0 selfloop transitions, 0 changer transitions 121/121 dead transitions. [2022-11-02 21:03:17,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 638 flow [2022-11-02 21:03:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:03:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 684 transitions. [2022-11-02 21:03:17,390 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.634508348794063 [2022-11-02 21:03:17,390 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 684 transitions. [2022-11-02 21:03:17,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 684 transitions. [2022-11-02 21:03:17,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:17,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 684 transitions. [2022-11-02 21:03:17,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.18181818181818) internal successors, (684), 11 states have internal predecessors, (684), 0 states have call successors, (0), 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 21:03:17,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:17,398 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 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 21:03:17,398 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 337 flow. Second operand 11 states and 684 transitions. [2022-11-02 21:03:17,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 638 flow [2022-11-02 21:03:17,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 121 transitions, 609 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-11-02 21:03:17,404 INFO L231 Difference]: Finished difference. Result has 112 places, 0 transitions, 0 flow [2022-11-02 21:03:17,404 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=112, PETRI_TRANSITIONS=0} [2022-11-02 21:03:17,407 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 24 predicate places. [2022-11-02 21:03:17,407 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 0 transitions, 0 flow [2022-11-02 21:03:17,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 60.06666666666667) internal successors, (901), 15 states have internal predecessors, (901), 0 states have call successors, (0), 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 21:03:17,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-02 21:03:17,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-02 21:03:17,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-02 21:03:17,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:17,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:17,631 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2022-11-02 21:03:17,635 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 21:03:17,635 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:03:17,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:03:17 BasicIcfg [2022-11-02 21:03:17,647 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:03:17,648 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:03:17,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:03:17,648 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:03:17,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:03:05" (3/4) ... [2022-11-02 21:03:17,653 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:03:17,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 21:03:17,661 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 21:03:17,668 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 21:03:17,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 21:03:17,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:03:17,669 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:03:17,728 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:03:17,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:03:17,729 INFO L158 Benchmark]: Toolchain (without parser) took 13178.25ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 93.6MB in the beginning and 100.1MB in the end (delta: -6.6MB). Peak memory consumption was 52.7MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,730 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:17,731 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.95ms. Allocated memory is still 127.9MB. Free memory was 93.4MB in the beginning and 103.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,731 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.43ms. Allocated memory is still 127.9MB. Free memory was 103.2MB in the beginning and 101.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,732 INFO L158 Benchmark]: Boogie Preprocessor took 60.03ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 100.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:03:17,732 INFO L158 Benchmark]: RCFGBuilder took 499.52ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 86.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,733 INFO L158 Benchmark]: TraceAbstraction took 12148.35ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 85.9MB in the beginning and 101.9MB in the end (delta: -16.1MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,733 INFO L158 Benchmark]: Witness Printer took 80.25ms. Allocated memory is still 186.6MB. Free memory was 101.9MB in the beginning and 100.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:03:17,736 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 86.0MB. Free memory was 58.0MB in the beginning and 58.0MB in the end (delta: 29.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.95ms. Allocated memory is still 127.9MB. Free memory was 93.4MB in the beginning and 103.2MB in the end (delta: -9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.43ms. Allocated memory is still 127.9MB. Free memory was 103.2MB in the beginning and 101.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.03ms. Allocated memory is still 127.9MB. Free memory was 101.7MB in the beginning and 100.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 499.52ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 86.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12148.35ms. Allocated memory was 127.9MB in the beginning and 186.6MB in the end (delta: 58.7MB). Free memory was 85.9MB in the beginning and 101.9MB in the end (delta: -16.1MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. * Witness Printer took 80.25ms. Allocated memory is still 186.6MB. Free memory was 101.9MB in the beginning and 100.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: 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, 119 locations, 3 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: 12.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 294 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 294 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 168 IncrementalHoareTripleChecker+Unchecked, 448 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 785 IncrementalHoareTripleChecker+Invalid, 986 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 104 mSDtfsCounter, 785 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 500 GetRequests, 434 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 861 ConstructedInterpolants, 27 QuantifiedInterpolants, 6701 SizeOfPredicates, 25 NumberOfNonLiveVariables, 495 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 1/13 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 21:03:17,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4fbe5d5-caa3-4e11-b02b-b5ecd09d9923/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