./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/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 ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:42:55,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:42:55,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:42:55,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:42:55,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:42:55,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:42:55,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:42:55,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:42:55,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:42:55,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:42:55,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:42:55,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:42:55,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:42:55,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:42:55,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:42:55,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:42:55,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:42:55,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:42:55,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:42:55,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:42:55,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:42:55,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:42:55,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:42:55,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:42:55,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:42:55,901 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:42:55,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:42:55,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:42:55,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:42:55,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:42:55,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:42:55,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:42:55,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:42:55,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:42:55,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:42:55,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:42:55,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:42:55,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:42:55,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:42:55,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:42:55,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:42:55,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:42:55,951 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:42:55,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:42:55,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:42:55,955 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:42:55,956 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:42:55,956 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:42:55,957 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:42:55,957 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:42:55,957 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:42:55,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:42:55,959 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:42:55,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:42:55,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:42:55,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:42:55,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:42:55,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:42:55,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:42:55,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:42:55,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:42:55,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:42:55,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:42:55,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:42:55,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:42:55,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:42:55,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:55,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:42:55,962 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:42:55,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:42:55,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:42:55,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:42:55,963 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:42:55,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:42:55,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:42:55,964 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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecda181bd3fe1882667151a04232fb9d04292dd6ca3491d98fdc8de5d539856a [2022-11-02 20:42:56,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:42:56,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:42:56,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:42:56,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:42:56,293 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:42:56,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-11-02 20:42:56,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/data/ab8b98bb8/dc522ad95fc4474c81980d1b4bc780a6/FLAG580ea5bbe [2022-11-02 20:42:56,920 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:42:56,920 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c [2022-11-02 20:42:56,928 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/data/ab8b98bb8/dc522ad95fc4474c81980d1b4bc780a6/FLAG580ea5bbe [2022-11-02 20:42:57,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/data/ab8b98bb8/dc522ad95fc4474c81980d1b4bc780a6 [2022-11-02 20:42:57,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:42:57,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:42:57,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:57,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:42:57,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:42:57,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60471c33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57, skipping insertion in model container [2022-11-02 20:42:57,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:42:57,276 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:42:57,501 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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-11-02 20:42:57,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:57,520 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:42:57,544 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_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/sv-benchmarks/c/weaver/popl20-more-dec-subseq.wvr.c[2924,2937] [2022-11-02 20:42:57,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:42:57,560 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:42:57,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57 WrapperNode [2022-11-02 20:42:57,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:42:57,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:57,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:42:57,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:42:57,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,604 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 191 [2022-11-02 20:42:57,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:42:57,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:42:57,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:42:57,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:42:57,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,634 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:42:57,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:42:57,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:42:57,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:42:57,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (1/1) ... [2022-11-02 20:42:57,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:42:57,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:57,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:42:57,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:42:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:42:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:42:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:42:57,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:42:57,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:42:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:42:57,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:42:57,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:42:57,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:42:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:42:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:42:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:42:57,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:42:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:42:57,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:42:57,747 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:42:57,881 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:42:57,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:42:58,316 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:42:58,461 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:42:58,466 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:42:58,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:58 BoogieIcfgContainer [2022-11-02 20:42:58,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:42:58,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:42:58,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:42:58,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:42:58,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:42:57" (1/3) ... [2022-11-02 20:42:58,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f74a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:58, skipping insertion in model container [2022-11-02 20:42:58,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:42:57" (2/3) ... [2022-11-02 20:42:58,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55f74a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:42:58, skipping insertion in model container [2022-11-02 20:42:58,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:42:58" (3/3) ... [2022-11-02 20:42:58,484 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-dec-subseq.wvr.c [2022-11-02 20:42:58,497 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:42:58,509 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:42:58,509 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:42:58,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:42:58,568 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:42:58,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-02 20:42:58,728 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-02 20:42:58,730 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:42:58,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 0/171 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-11-02 20:42:58,734 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-11-02 20:42:58,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 178 transitions, 368 flow [2022-11-02 20:42:58,760 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:42:58,771 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;@27e82cc3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:42:58,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:42:58,878 INFO L130 PetriNetUnfolder]: 15/177 cut-off events. [2022-11-02 20:42:58,879 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:42:58,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:58,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:58,881 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 20:42:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2100990696, now seen corresponding path program 1 times [2022-11-02 20:42:58,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:58,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881764300] [2022-11-02 20:42:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:42:59,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:59,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881764300] [2022-11-02 20:42:59,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881764300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:59,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:59,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:42:59,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038922857] [2022-11-02 20:42:59,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:42:59,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:59,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:42:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:42:59,366 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 189 [2022-11-02 20:42:59,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 178 transitions, 368 flow. Second operand has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:42:59,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 189 [2022-11-02 20:42:59,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:42:59,472 INFO L130 PetriNetUnfolder]: 14/193 cut-off events. [2022-11-02 20:42:59,473 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:42:59,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226 conditions, 193 events. 14/193 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 174 event pairs, 3 based on Foata normal form. 15/194 useless extension candidates. Maximal degree in co-relation 147. Up to 20 conditions per place. [2022-11-02 20:42:59,477 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 7 selfloop transitions, 0 changer transitions 6/168 dead transitions. [2022-11-02 20:42:59,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 168 transitions, 362 flow [2022-11-02 20:42:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:42:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:42:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 359 transitions. [2022-11-02 20:42:59,503 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9497354497354498 [2022-11-02 20:42:59,504 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 359 transitions. [2022-11-02 20:42:59,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 359 transitions. [2022-11-02 20:42:59,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:42:59,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 359 transitions. [2022-11-02 20:42:59,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.5) internal successors, (359), 2 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 20:42:59,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,528 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,530 INFO L175 Difference]: Start difference. First operand has 170 places, 178 transitions, 368 flow. Second operand 2 states and 359 transitions. [2022-11-02 20:42:59,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 168 transitions, 362 flow [2022-11-02 20:42:59,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 168 transitions, 354 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:42:59,547 INFO L231 Difference]: Finished difference. Result has 167 places, 162 transitions, 328 flow [2022-11-02 20:42:59,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=328, PETRI_PLACES=167, PETRI_TRANSITIONS=162} [2022-11-02 20:42:59,555 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-02 20:42:59,555 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 162 transitions, 328 flow [2022-11-02 20:42:59,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 173.5) internal successors, (347), 2 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:42:59,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:42:59,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:59,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:42:59,558 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 20:42:59,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:59,559 INFO L85 PathProgramCache]: Analyzing trace with hash 962025419, now seen corresponding path program 1 times [2022-11-02 20:42:59,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:59,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768827525] [2022-11-02 20:42:59,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:59,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:43:00,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:00,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768827525] [2022-11-02 20:43:00,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768827525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:00,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:00,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:43:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651759065] [2022-11-02 20:43:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:00,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:00,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:00,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:00,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:00,371 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 189 [2022-11-02 20:43:00,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 162 transitions, 328 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:00,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 189 [2022-11-02 20:43:00,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:00,653 INFO L130 PetriNetUnfolder]: 56/309 cut-off events. [2022-11-02 20:43:00,654 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:43:00,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 309 events. 56/309 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 871 event pairs, 12 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 445. Up to 64 conditions per place. [2022-11-02 20:43:00,656 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 45 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-11-02 20:43:00,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 171 transitions, 447 flow [2022-11-02 20:43:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:43:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 837 transitions. [2022-11-02 20:43:00,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-11-02 20:43:00,660 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 837 transitions. [2022-11-02 20:43:00,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 837 transitions. [2022-11-02 20:43:00,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:00,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 837 transitions. [2022-11-02 20:43:00,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 189.0) internal successors, (1323), 7 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,668 INFO L175 Difference]: Start difference. First operand has 167 places, 162 transitions, 328 flow. Second operand 6 states and 837 transitions. [2022-11-02 20:43:00,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 171 transitions, 447 flow [2022-11-02 20:43:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 171 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:00,673 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 346 flow [2022-11-02 20:43:00,674 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2022-11-02 20:43:00,675 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, -3 predicate places. [2022-11-02 20:43:00,675 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 346 flow [2022-11-02 20:43:00,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:00,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:00,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:00,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:43:00,677 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 20:43:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:00,677 INFO L85 PathProgramCache]: Analyzing trace with hash 351270765, now seen corresponding path program 1 times [2022-11-02 20:43:00,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:00,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931770788] [2022-11-02 20:43:00,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:00,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:01,044 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 20:43:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:01,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931770788] [2022-11-02 20:43:01,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931770788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:01,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:01,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:43:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813960210] [2022-11-02 20:43:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:01,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:43:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:43:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:01,050 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 189 [2022-11-02 20:43:01,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:01,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 189 [2022-11-02 20:43:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:01,254 INFO L130 PetriNetUnfolder]: 57/353 cut-off events. [2022-11-02 20:43:01,254 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-02 20:43:01,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 353 events. 57/353 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 978 event pairs, 12 based on Foata normal form. 4/338 useless extension candidates. Maximal degree in co-relation 525. Up to 60 conditions per place. [2022-11-02 20:43:01,258 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 46 selfloop transitions, 8 changer transitions 7/182 dead transitions. [2022-11-02 20:43:01,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 182 transitions, 511 flow [2022-11-02 20:43:01,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:43:01,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:43:01,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1158 transitions. [2022-11-02 20:43:01,261 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-11-02 20:43:01,262 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1158 transitions. [2022-11-02 20:43:01,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1158 transitions. [2022-11-02 20:43:01,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:01,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1158 transitions. [2022-11-02 20:43:01,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.75) internal successors, (1158), 8 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,271 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,271 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 346 flow. Second operand 8 states and 1158 transitions. [2022-11-02 20:43:01,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 182 transitions, 511 flow [2022-11-02 20:43:01,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 182 transitions, 501 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:43:01,276 INFO L231 Difference]: Finished difference. Result has 172 places, 164 transitions, 364 flow [2022-11-02 20:43:01,277 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2022-11-02 20:43:01,278 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-02 20:43:01,278 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 364 flow [2022-11-02 20:43:01,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:01,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:01,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:43:01,280 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 20:43:01,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:01,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1549323716, now seen corresponding path program 1 times [2022-11-02 20:43:01,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:01,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546087427] [2022-11-02 20:43:01,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:01,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:01,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:01,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:01,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546087427] [2022-11-02 20:43:01,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546087427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:01,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:01,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:43:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812129788] [2022-11-02 20:43:01,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:01,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:43:01,576 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 189 [2022-11-02 20:43:01,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:01,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 189 [2022-11-02 20:43:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:01,774 INFO L130 PetriNetUnfolder]: 119/471 cut-off events. [2022-11-02 20:43:01,774 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-02 20:43:01,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 471 events. 119/471 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1825 event pairs, 14 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 760. Up to 80 conditions per place. [2022-11-02 20:43:01,781 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 32 selfloop transitions, 9 changer transitions 0/184 dead transitions. [2022-11-02 20:43:01,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 184 transitions, 498 flow [2022-11-02 20:43:01,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:01,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:43:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2022-11-02 20:43:01,785 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8793650793650793 [2022-11-02 20:43:01,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2022-11-02 20:43:01,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2022-11-02 20:43:01,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:01,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2022-11-02 20:43:01,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,797 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,798 INFO L175 Difference]: Start difference. First operand has 172 places, 164 transitions, 364 flow. Second operand 5 states and 831 transitions. [2022-11-02 20:43:01,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 184 transitions, 498 flow [2022-11-02 20:43:01,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 184 transitions, 478 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-02 20:43:01,805 INFO L231 Difference]: Finished difference. Result has 172 places, 170 transitions, 406 flow [2022-11-02 20:43:01,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=172, PETRI_TRANSITIONS=170} [2022-11-02 20:43:01,808 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 2 predicate places. [2022-11-02 20:43:01,810 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 170 transitions, 406 flow [2022-11-02 20:43:01,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:01,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:01,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:01,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:43:01,812 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 20:43:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1416524864, now seen corresponding path program 2 times [2022-11-02 20:43:01,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:01,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654460341] [2022-11-02 20:43:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:02,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654460341] [2022-11-02 20:43:02,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654460341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:02,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:02,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:02,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534464358] [2022-11-02 20:43:02,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:02,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:02,173 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 189 [2022-11-02 20:43:02,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 170 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:02,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 189 [2022-11-02 20:43:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:02,382 INFO L130 PetriNetUnfolder]: 77/411 cut-off events. [2022-11-02 20:43:02,383 INFO L131 PetriNetUnfolder]: For 165/166 co-relation queries the response was YES. [2022-11-02 20:43:02,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 411 events. 77/411 cut-off events. For 165/166 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1479 event pairs, 16 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 713. Up to 70 conditions per place. [2022-11-02 20:43:02,386 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 43 selfloop transitions, 2 changer transitions 4/182 dead transitions. [2022-11-02 20:43:02,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 182 transitions, 552 flow [2022-11-02 20:43:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:02,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:43:02,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2022-11-02 20:43:02,389 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7767195767195767 [2022-11-02 20:43:02,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2022-11-02 20:43:02,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2022-11-02 20:43:02,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:02,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2022-11-02 20:43:02,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,395 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,395 INFO L175 Difference]: Start difference. First operand has 172 places, 170 transitions, 406 flow. Second operand 5 states and 734 transitions. [2022-11-02 20:43:02,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 182 transitions, 552 flow [2022-11-02 20:43:02,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 182 transitions, 552 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:43:02,402 INFO L231 Difference]: Finished difference. Result has 179 places, 171 transitions, 422 flow [2022-11-02 20:43:02,403 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=179, PETRI_TRANSITIONS=171} [2022-11-02 20:43:02,406 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 9 predicate places. [2022-11-02 20:43:02,406 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 171 transitions, 422 flow [2022-11-02 20:43:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:02,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:02,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:43:02,407 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 20:43:02,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:02,409 INFO L85 PathProgramCache]: Analyzing trace with hash -370848198, now seen corresponding path program 1 times [2022-11-02 20:43:02,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:02,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52208472] [2022-11-02 20:43:02,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:02,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:02,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:02,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52208472] [2022-11-02 20:43:02,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52208472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:02,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:02,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:43:02,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383607927] [2022-11-02 20:43:02,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:02,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:43:02,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:02,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:43:02,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:43:02,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 189 [2022-11-02 20:43:02,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 171 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:02,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 189 [2022-11-02 20:43:02,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:02,843 INFO L130 PetriNetUnfolder]: 62/418 cut-off events. [2022-11-02 20:43:02,844 INFO L131 PetriNetUnfolder]: For 163/166 co-relation queries the response was YES. [2022-11-02 20:43:02,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 418 events. 62/418 cut-off events. For 163/166 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1487 event pairs, 12 based on Foata normal form. 7/403 useless extension candidates. Maximal degree in co-relation 709. Up to 86 conditions per place. [2022-11-02 20:43:02,847 INFO L137 encePairwiseOnDemand]: 186/189 looper letters, 25 selfloop transitions, 2 changer transitions 2/181 dead transitions. [2022-11-02 20:43:02,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 181 transitions, 531 flow [2022-11-02 20:43:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:43:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:43:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 515 transitions. [2022-11-02 20:43:02,849 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.908289241622575 [2022-11-02 20:43:02,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 515 transitions. [2022-11-02 20:43:02,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 515 transitions. [2022-11-02 20:43:02,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:02,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 515 transitions. [2022-11-02 20:43:02,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,853 INFO L175 Difference]: Start difference. First operand has 179 places, 171 transitions, 422 flow. Second operand 3 states and 515 transitions. [2022-11-02 20:43:02,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 181 transitions, 531 flow [2022-11-02 20:43:02,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 181 transitions, 525 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:43:02,858 INFO L231 Difference]: Finished difference. Result has 177 places, 172 transitions, 428 flow [2022-11-02 20:43:02,859 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=428, PETRI_PLACES=177, PETRI_TRANSITIONS=172} [2022-11-02 20:43:02,859 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 7 predicate places. [2022-11-02 20:43:02,860 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 172 transitions, 428 flow [2022-11-02 20:43:02,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:02,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:02,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:43:02,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:43:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1626638925, now seen corresponding path program 1 times [2022-11-02 20:43:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:02,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728310679] [2022-11-02 20:43:02,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:02,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:43:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728310679] [2022-11-02 20:43:03,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728310679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:03,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:03,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:43:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503872188] [2022-11-02 20:43:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:03,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:43:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:43:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:03,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 189 [2022-11-02 20:43:03,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 172 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:03,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:03,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 189 [2022-11-02 20:43:03,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:03,372 INFO L130 PetriNetUnfolder]: 63/552 cut-off events. [2022-11-02 20:43:03,373 INFO L131 PetriNetUnfolder]: For 211/218 co-relation queries the response was YES. [2022-11-02 20:43:03,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 552 events. 63/552 cut-off events. For 211/218 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2117 event pairs, 19 based on Foata normal form. 6/530 useless extension candidates. Maximal degree in co-relation 952. Up to 94 conditions per place. [2022-11-02 20:43:03,376 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 34 selfloop transitions, 8 changer transitions 22/198 dead transitions. [2022-11-02 20:43:03,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 198 transitions, 642 flow [2022-11-02 20:43:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:43:03,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:43:03,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1361 transitions. [2022-11-02 20:43:03,381 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8001175778953556 [2022-11-02 20:43:03,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1361 transitions. [2022-11-02 20:43:03,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1361 transitions. [2022-11-02 20:43:03,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:03,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1361 transitions. [2022-11-02 20:43:03,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.22222222222223) internal successors, (1361), 9 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:03,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:03,390 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 189.0) internal successors, (1890), 10 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:03,390 INFO L175 Difference]: Start difference. First operand has 177 places, 172 transitions, 428 flow. Second operand 9 states and 1361 transitions. [2022-11-02 20:43:03,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 198 transitions, 642 flow [2022-11-02 20:43:03,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 198 transitions, 640 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:43:03,397 INFO L231 Difference]: Finished difference. Result has 186 places, 173 transitions, 454 flow [2022-11-02 20:43:03,398 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=454, PETRI_PLACES=186, PETRI_TRANSITIONS=173} [2022-11-02 20:43:03,399 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 16 predicate places. [2022-11-02 20:43:03,399 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 173 transitions, 454 flow [2022-11-02 20:43:03,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.83333333333334) internal successors, (899), 6 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:03,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:03,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:43:03,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:43:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash -648559060, now seen corresponding path program 1 times [2022-11-02 20:43:03,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:03,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258482159] [2022-11-02 20:43:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:05,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:05,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:05,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258482159] [2022-11-02 20:43:05,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258482159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:05,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61535246] [2022-11-02 20:43:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:05,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:05,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:05,868 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:05,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:43:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:06,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:43:06,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:09,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:43:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:09,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:09,829 INFO L356 Elim1Store]: treesize reduction 15, result has 83.9 percent of original size [2022-11-02 20:43:09,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 103 [2022-11-02 20:43:11,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:11,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61535246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:11,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:11,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 18] total 53 [2022-11-02 20:43:11,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504895527] [2022-11-02 20:43:11,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:11,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-02 20:43:11,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:11,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-02 20:43:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2315, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 20:43:11,485 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 189 [2022-11-02 20:43:11,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 173 transitions, 454 flow. Second operand has 53 states, 53 states have (on average 70.0754716981132) internal successors, (3714), 53 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:11,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:11,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 189 [2022-11-02 20:43:11,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:18,139 INFO L130 PetriNetUnfolder]: 3140/6179 cut-off events. [2022-11-02 20:43:18,139 INFO L131 PetriNetUnfolder]: For 3109/3109 co-relation queries the response was YES. [2022-11-02 20:43:18,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15028 conditions, 6179 events. 3140/6179 cut-off events. For 3109/3109 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 48057 event pairs, 489 based on Foata normal form. 1/5932 useless extension candidates. Maximal degree in co-relation 15014. Up to 1475 conditions per place. [2022-11-02 20:43:18,193 INFO L137 encePairwiseOnDemand]: 146/189 looper letters, 393 selfloop transitions, 138 changer transitions 50/636 dead transitions. [2022-11-02 20:43:18,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 636 transitions, 3229 flow [2022-11-02 20:43:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-02 20:43:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2022-11-02 20:43:18,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 5012 transitions. [2022-11-02 20:43:18,211 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3843263553408481 [2022-11-02 20:43:18,212 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 5012 transitions. [2022-11-02 20:43:18,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 5012 transitions. [2022-11-02 20:43:18,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:18,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 5012 transitions. [2022-11-02 20:43:18,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 72.6376811594203) internal successors, (5012), 69 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 189.0) internal successors, (13230), 70 states have internal predecessors, (13230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,256 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 189.0) internal successors, (13230), 70 states have internal predecessors, (13230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,256 INFO L175 Difference]: Start difference. First operand has 186 places, 173 transitions, 454 flow. Second operand 69 states and 5012 transitions. [2022-11-02 20:43:18,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 636 transitions, 3229 flow [2022-11-02 20:43:18,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 636 transitions, 3193 flow, removed 8 selfloop flow, removed 6 redundant places. [2022-11-02 20:43:18,291 INFO L231 Difference]: Finished difference. Result has 288 places, 308 transitions, 1513 flow [2022-11-02 20:43:18,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=69, PETRI_FLOW=1513, PETRI_PLACES=288, PETRI_TRANSITIONS=308} [2022-11-02 20:43:18,294 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 118 predicate places. [2022-11-02 20:43:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 308 transitions, 1513 flow [2022-11-02 20:43:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 70.0754716981132) internal successors, (3714), 53 states have internal predecessors, (3714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:18,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:18,297 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:18,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:18,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 20:43:18,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:43:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2086544452, now seen corresponding path program 2 times [2022-11-02 20:43:18,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:18,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74651473] [2022-11-02 20:43:18,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:18,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:20,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74651473] [2022-11-02 20:43:20,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74651473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:20,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690924343] [2022-11-02 20:43:20,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:43:20,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:20,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:20,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:20,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:43:21,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:43:21,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:21,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:43:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:23,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:43:23,200 INFO L356 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2022-11-02 20:43:23,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 13 [2022-11-02 20:43:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:23,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:24,005 INFO L356 Elim1Store]: treesize reduction 15, result has 83.9 percent of original size [2022-11-02 20:43:24,005 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 103 [2022-11-02 20:43:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:25,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690924343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:25,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:25,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 18] total 54 [2022-11-02 20:43:25,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745377693] [2022-11-02 20:43:25,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:25,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-02 20:43:25,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:25,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-02 20:43:26,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2262, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 20:43:26,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2022-11-02 20:43:26,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 308 transitions, 1513 flow. Second operand has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:26,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:26,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2022-11-02 20:43:26,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:34,786 INFO L130 PetriNetUnfolder]: 6972/13456 cut-off events. [2022-11-02 20:43:34,787 INFO L131 PetriNetUnfolder]: For 73899/74127 co-relation queries the response was YES. [2022-11-02 20:43:34,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61783 conditions, 13456 events. 6972/13456 cut-off events. For 73899/74127 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 118435 event pairs, 885 based on Foata normal form. 21/13405 useless extension candidates. Maximal degree in co-relation 61728. Up to 4124 conditions per place. [2022-11-02 20:43:35,025 INFO L137 encePairwiseOnDemand]: 143/189 looper letters, 470 selfloop transitions, 252 changer transitions 212/991 dead transitions. [2022-11-02 20:43:35,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 991 transitions, 8704 flow [2022-11-02 20:43:35,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-02 20:43:35,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2022-11-02 20:43:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5102 transitions. [2022-11-02 20:43:35,050 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4029061043986417 [2022-11-02 20:43:35,050 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5102 transitions. [2022-11-02 20:43:35,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5102 transitions. [2022-11-02 20:43:35,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:35,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5102 transitions. [2022-11-02 20:43:35,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 76.14925373134328) internal successors, (5102), 67 states have internal predecessors, (5102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:35,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 189.0) internal successors, (12852), 68 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:35,112 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 189.0) internal successors, (12852), 68 states have internal predecessors, (12852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:35,112 INFO L175 Difference]: Start difference. First operand has 288 places, 308 transitions, 1513 flow. Second operand 67 states and 5102 transitions. [2022-11-02 20:43:35,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 991 transitions, 8704 flow [2022-11-02 20:43:35,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 991 transitions, 8131 flow, removed 271 selfloop flow, removed 14 redundant places. [2022-11-02 20:43:35,944 INFO L231 Difference]: Finished difference. Result has 366 places, 471 transitions, 3621 flow [2022-11-02 20:43:35,945 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=3621, PETRI_PLACES=366, PETRI_TRANSITIONS=471} [2022-11-02 20:43:35,945 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 196 predicate places. [2022-11-02 20:43:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 471 transitions, 3621 flow [2022-11-02 20:43:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:35,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:35,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:35,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:36,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:43:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1185748946, now seen corresponding path program 3 times [2022-11-02 20:43:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:36,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542312207] [2022-11-02 20:43:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:37,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542312207] [2022-11-02 20:43:37,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542312207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:37,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883352275] [2022-11-02 20:43:37,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:43:37,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:37,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:37,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:37,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:43:38,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:43:38,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:43:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:43:38,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:40,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 20:43:40,065 INFO L356 Elim1Store]: treesize reduction 39, result has 7.1 percent of original size [2022-11-02 20:43:40,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 13 [2022-11-02 20:43:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:40,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:40,857 INFO L356 Elim1Store]: treesize reduction 15, result has 83.9 percent of original size [2022-11-02 20:43:40,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 103 [2022-11-02 20:43:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:43:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883352275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:43:42,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:43:42,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 18] total 54 [2022-11-02 20:43:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903148820] [2022-11-02 20:43:42,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:42,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-02 20:43:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-02 20:43:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=2262, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 20:43:42,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 189 [2022-11-02 20:43:42,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 471 transitions, 3621 flow. Second operand has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:42,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:43:42,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 189 [2022-11-02 20:43:42,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:43:52,865 INFO L130 PetriNetUnfolder]: 10972/20532 cut-off events. [2022-11-02 20:43:52,866 INFO L131 PetriNetUnfolder]: For 527645/528524 co-relation queries the response was YES. [2022-11-02 20:43:53,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153600 conditions, 20532 events. 10972/20532 cut-off events. For 527645/528524 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 184575 event pairs, 2247 based on Foata normal form. 68/20494 useless extension candidates. Maximal degree in co-relation 153519. Up to 6181 conditions per place. [2022-11-02 20:43:53,485 INFO L137 encePairwiseOnDemand]: 143/189 looper letters, 669 selfloop transitions, 273 changer transitions 69/1068 dead transitions. [2022-11-02 20:43:53,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1068 transitions, 12595 flow [2022-11-02 20:43:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-02 20:43:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-02 20:43:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 4251 transitions. [2022-11-02 20:43:53,501 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4016439909297052 [2022-11-02 20:43:53,501 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 4251 transitions. [2022-11-02 20:43:53,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 4251 transitions. [2022-11-02 20:43:53,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:43:53,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 4251 transitions. [2022-11-02 20:43:53,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 75.91071428571429) internal successors, (4251), 56 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:53,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 189.0) internal successors, (10773), 57 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:53,540 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 189.0) internal successors, (10773), 57 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:53,540 INFO L175 Difference]: Start difference. First operand has 366 places, 471 transitions, 3621 flow. Second operand 56 states and 4251 transitions. [2022-11-02 20:43:53,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1068 transitions, 12595 flow [2022-11-02 20:43:57,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 1068 transitions, 11373 flow, removed 576 selfloop flow, removed 42 redundant places. [2022-11-02 20:43:57,551 INFO L231 Difference]: Finished difference. Result has 378 places, 609 transitions, 5691 flow [2022-11-02 20:43:57,552 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=3319, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=5691, PETRI_PLACES=378, PETRI_TRANSITIONS=609} [2022-11-02 20:43:57,553 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 208 predicate places. [2022-11-02 20:43:57,553 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 609 transitions, 5691 flow [2022-11-02 20:43:57,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 72.07407407407408) internal successors, (3892), 54 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:43:57,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:43:57,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:57,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:57,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:43:57,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:43:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1158019710, now seen corresponding path program 4 times [2022-11-02 20:43:57,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:57,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900677234] [2022-11-02 20:43:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:57,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:44:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:44:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900677234] [2022-11-02 20:44:00,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900677234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:00,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867529827] [2022-11-02 20:44:00,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:44:00,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:44:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:44:00,151 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:44:00,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:44:00,275 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:44:00,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:44:00,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 20:44:00,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:44:00,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:44:01,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:44:01,784 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-02 20:44:01,784 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-02 20:44:01,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:44:02,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:44:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:03,009 INFO L356 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-02 20:44:03,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 44 [2022-11-02 20:44:03,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-11-02 20:44:03,372 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-02 20:44:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:03,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:03,761 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_226 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_226) c_~queue~0.base) (+ (* c_~start~0 4) c_~queue~0.offset)) (+ c_~v_old~0 1))) (not (= (mod c_~ok~0 256) 0))) is different from false [2022-11-02 20:44:09,061 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:09,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 81 [2022-11-02 20:44:09,102 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:09,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4396 treesize of output 3934 [2022-11-02 20:44:09,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3158 treesize of output 2774 [2022-11-02 20:44:09,199 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:09,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 3500 treesize of output 2776 [2022-11-02 20:44:09,265 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:09,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2732 treesize of output 2392 [2022-11-02 20:44:21,146 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:21,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2022-11-02 20:44:21,171 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:21,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 422 treesize of output 378 [2022-11-02 20:44:21,191 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:21,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 358 treesize of output 279 [2022-11-02 20:44:21,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:21,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 262 treesize of output 231 [2022-11-02 20:44:22,084 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:22,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 44 [2022-11-02 20:44:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:44:22,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867529827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:44:22,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:44:22,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 33, 32] total 84 [2022-11-02 20:44:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904685176] [2022-11-02 20:44:22,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:22,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-11-02 20:44:22,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-11-02 20:44:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=6223, Unknown=34, NotChecked=162, Total=6972 [2022-11-02 20:44:22,998 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 189 [2022-11-02 20:44:23,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 609 transitions, 5691 flow. Second operand has 84 states, 84 states have (on average 58.45238095238095) internal successors, (4910), 84 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:44:23,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:44:23,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 189 [2022-11-02 20:44:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:02,517 INFO L130 PetriNetUnfolder]: 30490/58063 cut-off events. [2022-11-02 20:45:02,518 INFO L131 PetriNetUnfolder]: For 1275407/1277009 co-relation queries the response was YES. [2022-11-02 20:45:03,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415920 conditions, 58063 events. 30490/58063 cut-off events. For 1275407/1277009 co-relation queries the response was YES. Maximal size of possible extension queue 2793. Compared 608016 event pairs, 5897 based on Foata normal form. 96/57962 useless extension candidates. Maximal degree in co-relation 415832. Up to 13759 conditions per place. [2022-11-02 20:45:03,808 INFO L137 encePairwiseOnDemand]: 135/189 looper letters, 1500 selfloop transitions, 698 changer transitions 231/2478 dead transitions. [2022-11-02 20:45:03,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 2478 transitions, 31837 flow [2022-11-02 20:45:03,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-11-02 20:45:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2022-11-02 20:45:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 7410 transitions. [2022-11-02 20:45:03,823 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.3379857690202518 [2022-11-02 20:45:03,823 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 7410 transitions. [2022-11-02 20:45:03,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 7410 transitions. [2022-11-02 20:45:03,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:03,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 7410 transitions. [2022-11-02 20:45:03,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 63.87931034482759) internal successors, (7410), 116 states have internal predecessors, (7410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 189.0) internal successors, (22113), 117 states have internal predecessors, (22113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,872 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 189.0) internal successors, (22113), 117 states have internal predecessors, (22113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:03,872 INFO L175 Difference]: Start difference. First operand has 378 places, 609 transitions, 5691 flow. Second operand 116 states and 7410 transitions. [2022-11-02 20:45:03,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 2478 transitions, 31837 flow [2022-11-02 20:45:18,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 2478 transitions, 30911 flow, removed 267 selfloop flow, removed 37 redundant places. [2022-11-02 20:45:18,075 INFO L231 Difference]: Finished difference. Result has 518 places, 1280 transitions, 16314 flow [2022-11-02 20:45:18,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=5336, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=16314, PETRI_PLACES=518, PETRI_TRANSITIONS=1280} [2022-11-02 20:45:18,077 INFO L287 CegarLoopForPetriNet]: 170 programPoint places, 348 predicate places. [2022-11-02 20:45:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 1280 transitions, 16314 flow [2022-11-02 20:45:18,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 58.45238095238095) internal successors, (4910), 84 states have internal predecessors, (4910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:18,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:18,079 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:18,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:18,299 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:18,299 INFO L85 PathProgramCache]: Analyzing trace with hash 134535146, now seen corresponding path program 5 times [2022-11-02 20:45:18,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:18,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117741077] [2022-11-02 20:45:18,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:18,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:20,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117741077] [2022-11-02 20:45:20,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117741077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:20,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989675365] [2022-11-02 20:45:20,754 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:45:20,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:20,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:20,756 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:20,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a771273-ffc1-4ad7-a834-f5e5fd1f842a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:45:20,875 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:45:20,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:20,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-02 20:45:20,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:22,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:45:23,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:23,743 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:45:24,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:24,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:45:24,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:45:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:24,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:27,457 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2022-11-02 20:45:27,470 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 854 treesize of output 746 [2022-11-02 20:45:27,489 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 726 treesize of output 551 [2022-11-02 20:45:27,506 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 534 treesize of output 455 [2022-11-02 20:45:27,769 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 74 [2022-11-02 20:45:27,786 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 547 treesize of output 535 [2022-11-02 20:45:27,851 INFO L356 Elim1Store]: treesize reduction 30, result has 63.9 percent of original size [2022-11-02 20:45:27,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 715 treesize of output 728 [2022-11-02 20:45:27,897 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 716 treesize of output 628 [2022-11-02 20:45:27,946 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:27,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 497 treesize of output 475 [2022-11-02 20:45:34,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:45:34,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 116 [2022-11-02 20:45:34,982 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:45:34,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 254 [2022-11-02 20:45:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:38,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989675365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:38,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:38,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 36, 31] total 86 [2022-11-02 20:45:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314562866] [2022-11-02 20:45:38,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-11-02 20:45:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-11-02 20:45:38,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=724, Invalid=6539, Unknown=47, NotChecked=0, Total=7310 [2022-11-02 20:45:38,484 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 189 [2022-11-02 20:45:38,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 1280 transitions, 16314 flow. Second operand has 86 states, 86 states have (on average 59.45348837209303) internal successors, (5113), 86 states have internal predecessors, (5113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:38,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 189 [2022-11-02 20:45:38,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:42,159 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~n~0 c_~end~0)) (.cse5 (< c_~end~0 0)) (.cse1 (not (= (mod c_~ok~0 256) 0))) (.cse3 (* c_~start~0 4)) (.cse2 (* c_~end~0 4)) (.cse4 (* c_~i~0 4))) (and (= c_~i~0 0) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t2~0#1.base|) (or .cse0 (and (not (= |c_ULTIMATE.start_main_~#t1~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|)) .cse1 (= .cse2 .cse3) (= .cse4 0) (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) .cse5) (= c_~ok~0 1) (= c_~start~0 c_~end~0) (or .cse0 .cse5 (let ((.cse7 (+ .cse4 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (.cse8 (+ .cse2 c_~queue~0.offset))) (and (or (forall ((v_ArrVal_261 (Array Int Int)) (~queue~0.base Int) (v_ArrVal_262 (Array Int Int))) (not (let ((.cse6 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_262))) (= (select (select .cse6 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse7) (select (select .cse6 ~queue~0.base) .cse8))))) .cse1) (forall ((v_ArrVal_261 (Array Int Int)) (~queue~0.base Int) (v_ArrVal_262 (Array Int Int))) (let ((.cse10 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_262))) (let ((.cse9 (select .cse10 ~queue~0.base))) (or (< (select .cse9 (+ .cse3 c_~queue~0.offset)) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 1)) (not (= (select (select .cse10 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) .cse7) (select .cse9 .cse8)))))))))) (< |c_#StackHeapBarrier| |c_ULTIMATE.start_main_~#t1~0#1.base|))) is different from false