./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/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_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/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_f134e772-76ed-4061-b682-e46dffd12e41/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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- 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 20:31:41,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:31:41,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:31:41,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:31:41,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:31:41,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:31:41,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:31:41,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:31:41,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:31:41,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:31:41,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:31:41,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:31:41,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:31:41,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:31:41,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:31:41,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:31:41,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:31:41,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:31:41,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:31:41,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:31:41,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:31:41,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:31:41,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:31:41,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:31:41,843 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:31:41,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:31:41,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:31:41,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:31:41,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:31:41,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:31:41,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:31:41,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:31:41,856 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:31:41,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:31:41,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:31:41,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:31:41,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:31:41,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:31:41,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:31:41,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:31:41,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:31:41,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:31:41,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:31:41,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:31:41,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:31:41,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:31:41,916 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:31:41,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:31:41,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:31:41,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:31:41,918 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:31:41,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:31:41,920 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:31:41,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:31:41,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:31:41,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:31:41,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:31:41,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:31:41,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:31:41,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:31:41,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:31:41,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:31:41,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:31:41,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:31:41,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:31:41,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:31:41,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:41,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:31:41,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:31:41,928 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:31:41,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:31:41,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:31:41,929 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:31:41,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:31:41,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:31:41,931 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_f134e772-76ed-4061-b682-e46dffd12e41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-11-02 20:31:42,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:31:42,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:31:42,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:31:42,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:31:42,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:31:42,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-02 20:31:42,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/data/b80207841/a515271c89dd440e9da4b77bfc9334eb/FLAGedf3874e6 [2022-11-02 20:31:43,026 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:31:43,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-02 20:31:43,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/data/b80207841/a515271c89dd440e9da4b77bfc9334eb/FLAGedf3874e6 [2022-11-02 20:31:43,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/data/b80207841/a515271c89dd440e9da4b77bfc9334eb [2022-11-02 20:31:43,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:31:43,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:31:43,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:43,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:31:43,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:31:43,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45954a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43, skipping insertion in model container [2022-11-02 20:31:43,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:31:43,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:31:43,824 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_f134e772-76ed-4061-b682-e46dffd12e41/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-02 20:31:43,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:43,852 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:31:43,904 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_f134e772-76ed-4061-b682-e46dffd12e41/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-02 20:31:43,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:31:43,940 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:31:43,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43 WrapperNode [2022-11-02 20:31:43,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:31:43,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:43,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:31:43,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:31:43,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:43,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,006 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-02 20:31:44,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:31:44,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:31:44,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:31:44,008 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:31:44,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,036 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,041 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:31:44,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:31:44,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:31:44,043 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:31:44,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (1/1) ... [2022-11-02 20:31:44,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:31:44,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:31:44,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:31:44,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:31:44,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:31:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:31:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:31:44,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:31:44,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:31:44,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:31:44,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:31:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 20:31:44,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 20:31:44,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:31:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:31:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:31:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:31:44,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:31:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:31:44,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:31:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:31:44,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:31:44,181 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 20:31:44,355 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:31:44,358 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:31:44,832 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:31:44,992 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:31:45,006 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:31:45,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:45 BoogieIcfgContainer [2022-11-02 20:31:45,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:31:45,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:31:45,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:31:45,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:31:45,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:31:43" (1/3) ... [2022-11-02 20:31:45,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6352a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:45, skipping insertion in model container [2022-11-02 20:31:45,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:31:43" (2/3) ... [2022-11-02 20:31:45,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6352a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:31:45, skipping insertion in model container [2022-11-02 20:31:45,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:45" (3/3) ... [2022-11-02 20:31:45,027 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-11-02 20:31:45,039 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:31:45,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:31:45,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:31:45,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:31:45,231 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-02 20:31:45,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-11-02 20:31:45,450 INFO L130 PetriNetUnfolder]: 2/138 cut-off events. [2022-11-02 20:31:45,457 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:31:45,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-02 20:31:45,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-11-02 20:31:45,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-11-02 20:31:45,488 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:31:45,496 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;@48ec6a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:31:45,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-02 20:31:45,565 INFO L130 PetriNetUnfolder]: 2/124 cut-off events. [2022-11-02 20:31:45,571 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-02 20:31:45,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:45,573 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] [2022-11-02 20:31:45,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:45,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:45,586 INFO L85 PathProgramCache]: Analyzing trace with hash 371553834, now seen corresponding path program 1 times [2022-11-02 20:31:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:45,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297415440] [2022-11-02 20:31:45,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:45,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:48,341 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 20:31:48,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:48,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297415440] [2022-11-02 20:31:48,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297415440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:48,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:48,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:31:48,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097555867] [2022-11-02 20:31:48,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:48,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:31:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:31:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:31:48,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-11-02 20:31:48,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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 20:31:48,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:31:48,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-11-02 20:31:48,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:31:50,573 INFO L130 PetriNetUnfolder]: 3366/5967 cut-off events. [2022-11-02 20:31:50,574 INFO L131 PetriNetUnfolder]: For 1096/1114 co-relation queries the response was YES. [2022-11-02 20:31:50,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11693 conditions, 5967 events. 3366/5967 cut-off events. For 1096/1114 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 40062 event pairs, 2346 based on Foata normal form. 3/5771 useless extension candidates. Maximal degree in co-relation 9336. Up to 2258 conditions per place. [2022-11-02 20:31:50,682 INFO L137 encePairwiseOnDemand]: 125/142 looper letters, 67 selfloop transitions, 13 changer transitions 12/176 dead transitions. [2022-11-02 20:31:50,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 176 transitions, 593 flow [2022-11-02 20:31:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:31:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:31:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1196 transitions. [2022-11-02 20:31:50,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.765685019206146 [2022-11-02 20:31:50,708 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1196 transitions. [2022-11-02 20:31:50,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1196 transitions. [2022-11-02 20:31:50,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:31:50,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1196 transitions. [2022-11-02 20:31:50,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.72727272727273) internal successors, (1196), 11 states have internal predecessors, (1196), 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 20:31:50,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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 20:31:50,742 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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 20:31:50,744 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 274 flow. Second operand 11 states and 1196 transitions. [2022-11-02 20:31:50,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 176 transitions, 593 flow [2022-11-02 20:31:50,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 176 transitions, 555 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-02 20:31:50,763 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 325 flow [2022-11-02 20:31:50,766 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2022-11-02 20:31:50,770 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-11-02 20:31:50,770 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 325 flow [2022-11-02 20:31:50,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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 20:31:50,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:50,772 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] [2022-11-02 20:31:50,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:31:50,774 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2033235304, now seen corresponding path program 2 times [2022-11-02 20:31:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155490430] [2022-11-02 20:31:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:52,252 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 20:31:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:52,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155490430] [2022-11-02 20:31:52,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155490430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:52,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:52,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:31:52,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017682928] [2022-11-02 20:31:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:52,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:31:52,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:52,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:31:52,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:31:52,259 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-11-02 20:31:52,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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 20:31:52,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:31:52,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-11-02 20:31:52,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:31:54,098 INFO L130 PetriNetUnfolder]: 3250/6205 cut-off events. [2022-11-02 20:31:54,098 INFO L131 PetriNetUnfolder]: For 2143/2143 co-relation queries the response was YES. [2022-11-02 20:31:54,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13401 conditions, 6205 events. 3250/6205 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 45465 event pairs, 1474 based on Foata normal form. 1/6038 useless extension candidates. Maximal degree in co-relation 13388. Up to 2935 conditions per place. [2022-11-02 20:31:54,167 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 46 selfloop transitions, 11 changer transitions 37/178 dead transitions. [2022-11-02 20:31:54,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 667 flow [2022-11-02 20:31:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:31:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:31:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2022-11-02 20:31:54,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2022-11-02 20:31:54,175 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2022-11-02 20:31:54,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2022-11-02 20:31:54,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:31:54,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2022-11-02 20:31:54,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 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 20:31:54,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:31:54,188 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:31:54,188 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 325 flow. Second operand 10 states and 1089 transitions. [2022-11-02 20:31:54,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 667 flow [2022-11-02 20:31:54,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 178 transitions, 642 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-02 20:31:54,198 INFO L231 Difference]: Finished difference. Result has 145 places, 131 transitions, 371 flow [2022-11-02 20:31:54,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2022-11-02 20:31:54,200 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2022-11-02 20:31:54,200 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 371 flow [2022-11-02 20:31:54,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 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 20:31:54,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:54,202 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] [2022-11-02 20:31:54,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:31:54,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:54,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:54,204 INFO L85 PathProgramCache]: Analyzing trace with hash 640158556, now seen corresponding path program 3 times [2022-11-02 20:31:54,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:54,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033736387] [2022-11-02 20:31:54,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:54,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:54,776 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 20:31:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:54,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033736387] [2022-11-02 20:31:54,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033736387] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:54,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:54,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:31:54,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874686473] [2022-11-02 20:31:54,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:54,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:31:54,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:31:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:31:54,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:31:54,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:54,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:31:54,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:31:54,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:31:56,027 INFO L130 PetriNetUnfolder]: 1951/4749 cut-off events. [2022-11-02 20:31:56,028 INFO L131 PetriNetUnfolder]: For 2248/2590 co-relation queries the response was YES. [2022-11-02 20:31:56,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 4749 events. 1951/4749 cut-off events. For 2248/2590 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41249 event pairs, 497 based on Foata normal form. 82/4628 useless extension candidates. Maximal degree in co-relation 9642. Up to 986 conditions per place. [2022-11-02 20:31:56,091 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2022-11-02 20:31:56,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 177 transitions, 636 flow [2022-11-02 20:31:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:31:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:31:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-11-02 20:31:56,095 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.806841046277666 [2022-11-02 20:31:56,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-11-02 20:31:56,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-11-02 20:31:56,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:31:56,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-11-02 20:31:56,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 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 20:31:56,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:56,103 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:56,104 INFO L175 Difference]: Start difference. First operand has 145 places, 131 transitions, 371 flow. Second operand 7 states and 802 transitions. [2022-11-02 20:31:56,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 177 transitions, 636 flow [2022-11-02 20:31:56,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 597 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-02 20:31:56,128 INFO L231 Difference]: Finished difference. Result has 141 places, 147 transitions, 440 flow [2022-11-02 20:31:56,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2022-11-02 20:31:56,131 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2022-11-02 20:31:56,131 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 440 flow [2022-11-02 20:31:56,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:56,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:56,134 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] [2022-11-02 20:31:56,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:31:56,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1712300596, now seen corresponding path program 4 times [2022-11-02 20:31:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:56,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854052205] [2022-11-02 20:31:56,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:56,544 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 20:31:56,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:56,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854052205] [2022-11-02 20:31:56,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854052205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:56,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:56,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:31:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528950267] [2022-11-02 20:31:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:31:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:31:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:31:56,550 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:31:56,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:56,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:31:56,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:31:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:31:57,874 INFO L130 PetriNetUnfolder]: 1900/4565 cut-off events. [2022-11-02 20:31:57,874 INFO L131 PetriNetUnfolder]: For 2940/3263 co-relation queries the response was YES. [2022-11-02 20:31:57,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 4565 events. 1900/4565 cut-off events. For 2940/3263 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 38714 event pairs, 505 based on Foata normal form. 153/4512 useless extension candidates. Maximal degree in co-relation 3466. Up to 949 conditions per place. [2022-11-02 20:31:57,945 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2022-11-02 20:31:57,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 180 transitions, 719 flow [2022-11-02 20:31:57,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:31:58,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:31:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2022-11-02 20:31:58,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8048289738430584 [2022-11-02 20:31:58,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2022-11-02 20:31:58,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2022-11-02 20:31:58,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:31:58,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2022-11-02 20:31:58,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 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 20:31:58,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:58,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:58,055 INFO L175 Difference]: Start difference. First operand has 141 places, 147 transitions, 440 flow. Second operand 7 states and 800 transitions. [2022-11-02 20:31:58,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 180 transitions, 719 flow [2022-11-02 20:31:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 180 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:31:58,075 INFO L231 Difference]: Finished difference. Result has 147 places, 153 transitions, 537 flow [2022-11-02 20:31:58,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2022-11-02 20:31:58,078 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2022-11-02 20:31:58,078 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 537 flow [2022-11-02 20:31:58,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:58,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:58,080 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] [2022-11-02 20:31:58,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:31:58,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:58,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:58,082 INFO L85 PathProgramCache]: Analyzing trace with hash -524014812, now seen corresponding path program 5 times [2022-11-02 20:31:58,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:58,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541114701] [2022-11-02 20:31:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:58,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:31:58,481 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 20:31:58,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:31:58,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541114701] [2022-11-02 20:31:58,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541114701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:31:58,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:31:58,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:31:58,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675415226] [2022-11-02 20:31:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:31:58,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:31:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:31:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:31:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:31:58,487 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:31:58,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:58,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:31:58,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:31:58,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:31:59,733 INFO L130 PetriNetUnfolder]: 1718/4162 cut-off events. [2022-11-02 20:31:59,733 INFO L131 PetriNetUnfolder]: For 5042/5315 co-relation queries the response was YES. [2022-11-02 20:31:59,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12144 conditions, 4162 events. 1718/4162 cut-off events. For 5042/5315 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35052 event pairs, 403 based on Foata normal form. 117/4084 useless extension candidates. Maximal degree in co-relation 6325. Up to 867 conditions per place. [2022-11-02 20:31:59,786 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 31 changer transitions 1/188 dead transitions. [2022-11-02 20:31:59,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 872 flow [2022-11-02 20:31:59,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:31:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:31:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-11-02 20:31:59,790 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8058350100603622 [2022-11-02 20:31:59,791 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2022-11-02 20:31:59,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2022-11-02 20:31:59,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:31:59,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2022-11-02 20:31:59,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:31:59,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:59,798 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 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 20:31:59,798 INFO L175 Difference]: Start difference. First operand has 147 places, 153 transitions, 537 flow. Second operand 7 states and 801 transitions. [2022-11-02 20:31:59,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 872 flow [2022-11-02 20:31:59,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 188 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:31:59,812 INFO L231 Difference]: Finished difference. Result has 151 places, 161 transitions, 653 flow [2022-11-02 20:31:59,812 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=151, PETRI_TRANSITIONS=161} [2022-11-02 20:31:59,815 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 15 predicate places. [2022-11-02 20:31:59,816 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 161 transitions, 653 flow [2022-11-02 20:31:59,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 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 20:31:59,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:31:59,817 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] [2022-11-02 20:31:59,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:31:59,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:31:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:31:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1871223698, now seen corresponding path program 6 times [2022-11-02 20:31:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:31:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263771481] [2022-11-02 20:31:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:31:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:31:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:00,478 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 20:32:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263771481] [2022-11-02 20:32:00,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263771481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:00,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:00,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:32:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130655539] [2022-11-02 20:32:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:00,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:32:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:32:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:00,485 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:00,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 161 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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 20:32:00,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:00,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:00,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:01,425 INFO L130 PetriNetUnfolder]: 1119/3106 cut-off events. [2022-11-02 20:32:01,425 INFO L131 PetriNetUnfolder]: For 5132/5371 co-relation queries the response was YES. [2022-11-02 20:32:01,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 3106 events. 1119/3106 cut-off events. For 5132/5371 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25607 event pairs, 175 based on Foata normal form. 157/3138 useless extension candidates. Maximal degree in co-relation 3632. Up to 682 conditions per place. [2022-11-02 20:32:01,472 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 69 changer transitions 9/240 dead transitions. [2022-11-02 20:32:01,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 240 transitions, 1348 flow [2022-11-02 20:32:01,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:32:01,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:32:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 925 transitions. [2022-11-02 20:32:01,477 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8142605633802817 [2022-11-02 20:32:01,477 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 925 transitions. [2022-11-02 20:32:01,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 925 transitions. [2022-11-02 20:32:01,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:01,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 925 transitions. [2022-11-02 20:32:01,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 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 20:32:01,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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 20:32:01,487 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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 20:32:01,487 INFO L175 Difference]: Start difference. First operand has 151 places, 161 transitions, 653 flow. Second operand 8 states and 925 transitions. [2022-11-02 20:32:01,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 240 transitions, 1348 flow [2022-11-02 20:32:01,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 240 transitions, 1286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:32:01,503 INFO L231 Difference]: Finished difference. Result has 154 places, 195 transitions, 1068 flow [2022-11-02 20:32:01,503 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=154, PETRI_TRANSITIONS=195} [2022-11-02 20:32:01,507 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 18 predicate places. [2022-11-02 20:32:01,508 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 195 transitions, 1068 flow [2022-11-02 20:32:01,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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 20:32:01,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:01,510 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] [2022-11-02 20:32:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:32:01,510 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:01,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1681246108, now seen corresponding path program 7 times [2022-11-02 20:32:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:01,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955516597] [2022-11-02 20:32:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:01,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:02,022 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 20:32:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:02,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955516597] [2022-11-02 20:32:02,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955516597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:02,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:02,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:32:02,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579561853] [2022-11-02 20:32:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:02,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:32:02,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:32:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:32:02,035 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:02,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 1068 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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 20:32:02,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:02,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:02,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:02,929 INFO L130 PetriNetUnfolder]: 992/2779 cut-off events. [2022-11-02 20:32:02,930 INFO L131 PetriNetUnfolder]: For 8114/8729 co-relation queries the response was YES. [2022-11-02 20:32:02,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 2779 events. 992/2779 cut-off events. For 8114/8729 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22419 event pairs, 150 based on Foata normal form. 300/2967 useless extension candidates. Maximal degree in co-relation 3571. Up to 597 conditions per place. [2022-11-02 20:32:02,978 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 72 changer transitions 2/236 dead transitions. [2022-11-02 20:32:02,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 236 transitions, 1546 flow [2022-11-02 20:32:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:32:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:32:02,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 922 transitions. [2022-11-02 20:32:02,983 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8116197183098591 [2022-11-02 20:32:03,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 922 transitions. [2022-11-02 20:32:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 922 transitions. [2022-11-02 20:32:03,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:03,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 922 transitions. [2022-11-02 20:32:03,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 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 20:32:03,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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 20:32:03,063 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 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 20:32:03,063 INFO L175 Difference]: Start difference. First operand has 154 places, 195 transitions, 1068 flow. Second operand 8 states and 922 transitions. [2022-11-02 20:32:03,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 236 transitions, 1546 flow [2022-11-02 20:32:03,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 236 transitions, 1516 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-11-02 20:32:03,086 INFO L231 Difference]: Finished difference. Result has 159 places, 198 transitions, 1247 flow [2022-11-02 20:32:03,086 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1247, PETRI_PLACES=159, PETRI_TRANSITIONS=198} [2022-11-02 20:32:03,087 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2022-11-02 20:32:03,087 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 198 transitions, 1247 flow [2022-11-02 20:32:03,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 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 20:32:03,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:03,089 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] [2022-11-02 20:32:03,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:32:03,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1036232522, now seen corresponding path program 8 times [2022-11-02 20:32:03,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:03,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057206052] [2022-11-02 20:32:03,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:03,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:03,564 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 20:32:03,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:03,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057206052] [2022-11-02 20:32:03,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057206052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:03,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:03,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:32:03,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194963316] [2022-11-02 20:32:03,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:03,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:32:03,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:32:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:03,570 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:03,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 198 transitions, 1247 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:03,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:03,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:04,648 INFO L130 PetriNetUnfolder]: 1024/2863 cut-off events. [2022-11-02 20:32:04,648 INFO L131 PetriNetUnfolder]: For 11624/12263 co-relation queries the response was YES. [2022-11-02 20:32:04,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 2863 events. 1024/2863 cut-off events. For 11624/12263 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 23397 event pairs, 130 based on Foata normal form. 302/3048 useless extension candidates. Maximal degree in co-relation 8228. Up to 599 conditions per place. [2022-11-02 20:32:04,704 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 80 selfloop transitions, 91 changer transitions 1/265 dead transitions. [2022-11-02 20:32:04,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 265 transitions, 2059 flow [2022-11-02 20:32:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:04,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:32:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1149 transitions. [2022-11-02 20:32:04,772 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8091549295774648 [2022-11-02 20:32:04,773 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1149 transitions. [2022-11-02 20:32:04,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1149 transitions. [2022-11-02 20:32:04,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:04,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1149 transitions. [2022-11-02 20:32:04,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.9) internal successors, (1149), 10 states have internal predecessors, (1149), 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 20:32:04,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:04,786 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:04,786 INFO L175 Difference]: Start difference. First operand has 159 places, 198 transitions, 1247 flow. Second operand 10 states and 1149 transitions. [2022-11-02 20:32:04,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 265 transitions, 2059 flow [2022-11-02 20:32:04,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 265 transitions, 1870 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-02 20:32:04,807 INFO L231 Difference]: Finished difference. Result has 163 places, 217 transitions, 1559 flow [2022-11-02 20:32:04,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=163, PETRI_TRANSITIONS=217} [2022-11-02 20:32:04,811 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2022-11-02 20:32:04,811 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 217 transitions, 1559 flow [2022-11-02 20:32:04,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:04,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:04,812 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] [2022-11-02 20:32:04,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:32:04,813 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:04,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:04,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2041427698, now seen corresponding path program 9 times [2022-11-02 20:32:04,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:04,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686014976] [2022-11-02 20:32:04,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:04,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:05,267 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 20:32:05,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:05,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686014976] [2022-11-02 20:32:05,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686014976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:05,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:05,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:32:05,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650873101] [2022-11-02 20:32:05,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:05,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:32:05,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:32:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:05,273 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:05,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 217 transitions, 1559 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:05,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:05,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:06,223 INFO L130 PetriNetUnfolder]: 891/2672 cut-off events. [2022-11-02 20:32:06,223 INFO L131 PetriNetUnfolder]: For 11093/11622 co-relation queries the response was YES. [2022-11-02 20:32:06,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 2672 events. 891/2672 cut-off events. For 11093/11622 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21965 event pairs, 123 based on Foata normal form. 295/2869 useless extension candidates. Maximal degree in co-relation 3782. Up to 533 conditions per place. [2022-11-02 20:32:06,263 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 77 selfloop transitions, 98 changer transitions 11/279 dead transitions. [2022-11-02 20:32:06,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 279 transitions, 2338 flow [2022-11-02 20:32:06,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:32:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2022-11-02 20:32:06,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2022-11-02 20:32:06,271 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2022-11-02 20:32:06,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2022-11-02 20:32:06,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:06,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2022-11-02 20:32:06,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 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 20:32:06,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:06,281 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:06,281 INFO L175 Difference]: Start difference. First operand has 163 places, 217 transitions, 1559 flow. Second operand 10 states and 1150 transitions. [2022-11-02 20:32:06,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 279 transitions, 2338 flow [2022-11-02 20:32:06,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 279 transitions, 2204 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:32:06,313 INFO L231 Difference]: Finished difference. Result has 169 places, 224 transitions, 1750 flow [2022-11-02 20:32:06,313 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1750, PETRI_PLACES=169, PETRI_TRANSITIONS=224} [2022-11-02 20:32:06,314 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 33 predicate places. [2022-11-02 20:32:06,315 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 224 transitions, 1750 flow [2022-11-02 20:32:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:06,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:06,316 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] [2022-11-02 20:32:06,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:32:06,317 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:06,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:06,318 INFO L85 PathProgramCache]: Analyzing trace with hash -304365380, now seen corresponding path program 10 times [2022-11-02 20:32:06,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:06,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126682420] [2022-11-02 20:32:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:06,767 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 20:32:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:06,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126682420] [2022-11-02 20:32:06,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126682420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:06,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:06,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:32:06,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283785476] [2022-11-02 20:32:06,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:06,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:32:06,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:06,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:32:06,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:06,786 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:06,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 224 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:06,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:06,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:06,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:07,741 INFO L130 PetriNetUnfolder]: 646/2148 cut-off events. [2022-11-02 20:32:07,741 INFO L131 PetriNetUnfolder]: For 11286/11833 co-relation queries the response was YES. [2022-11-02 20:32:07,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 2148 events. 646/2148 cut-off events. For 11286/11833 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17355 event pairs, 79 based on Foata normal form. 286/2368 useless extension candidates. Maximal degree in co-relation 3898. Up to 440 conditions per place. [2022-11-02 20:32:07,773 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 76 selfloop transitions, 108 changer transitions 18/295 dead transitions. [2022-11-02 20:32:07,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 295 transitions, 2784 flow [2022-11-02 20:32:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:32:07,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1146 transitions. [2022-11-02 20:32:07,778 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8070422535211268 [2022-11-02 20:32:07,779 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1146 transitions. [2022-11-02 20:32:07,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1146 transitions. [2022-11-02 20:32:07,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:07,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1146 transitions. [2022-11-02 20:32:07,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 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 20:32:07,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:07,803 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:07,803 INFO L175 Difference]: Start difference. First operand has 169 places, 224 transitions, 1750 flow. Second operand 10 states and 1146 transitions. [2022-11-02 20:32:07,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 295 transitions, 2784 flow [2022-11-02 20:32:07,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 2667 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:32:07,868 INFO L231 Difference]: Finished difference. Result has 175 places, 233 transitions, 2043 flow [2022-11-02 20:32:07,876 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2043, PETRI_PLACES=175, PETRI_TRANSITIONS=233} [2022-11-02 20:32:07,877 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 39 predicate places. [2022-11-02 20:32:07,878 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 233 transitions, 2043 flow [2022-11-02 20:32:07,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:07,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:07,879 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] [2022-11-02 20:32:07,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:32:07,880 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:07,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:07,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1118019206, now seen corresponding path program 11 times [2022-11-02 20:32:07,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:07,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730013650] [2022-11-02 20:32:07,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:07,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:08,439 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 20:32:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730013650] [2022-11-02 20:32:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730013650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:08,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:08,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:32:08,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420232097] [2022-11-02 20:32:08,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:08,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:32:08,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:08,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:32:08,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:08,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:08,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 233 transitions, 2043 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:08,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:08,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:09,406 INFO L130 PetriNetUnfolder]: 551/1977 cut-off events. [2022-11-02 20:32:09,407 INFO L131 PetriNetUnfolder]: For 10812/11136 co-relation queries the response was YES. [2022-11-02 20:32:09,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 1977 events. 551/1977 cut-off events. For 10812/11136 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15711 event pairs, 53 based on Foata normal form. 142/2052 useless extension candidates. Maximal degree in co-relation 4403. Up to 371 conditions per place. [2022-11-02 20:32:09,438 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 58 selfloop transitions, 140 changer transitions 11/302 dead transitions. [2022-11-02 20:32:09,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 302 transitions, 3041 flow [2022-11-02 20:32:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:32:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1133 transitions. [2022-11-02 20:32:09,443 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.797887323943662 [2022-11-02 20:32:09,443 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1133 transitions. [2022-11-02 20:32:09,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1133 transitions. [2022-11-02 20:32:09,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:09,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1133 transitions. [2022-11-02 20:32:09,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.3) internal successors, (1133), 10 states have internal predecessors, (1133), 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 20:32:09,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:09,455 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:09,456 INFO L175 Difference]: Start difference. First operand has 175 places, 233 transitions, 2043 flow. Second operand 10 states and 1133 transitions. [2022-11-02 20:32:09,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 302 transitions, 3041 flow [2022-11-02 20:32:09,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 302 transitions, 2982 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:32:09,500 INFO L231 Difference]: Finished difference. Result has 181 places, 259 transitions, 2604 flow [2022-11-02 20:32:09,501 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2604, PETRI_PLACES=181, PETRI_TRANSITIONS=259} [2022-11-02 20:32:09,502 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 45 predicate places. [2022-11-02 20:32:09,503 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 259 transitions, 2604 flow [2022-11-02 20:32:09,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:09,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:09,505 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] [2022-11-02 20:32:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:32:09,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:09,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2091271614, now seen corresponding path program 12 times [2022-11-02 20:32:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:09,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408694107] [2022-11-02 20:32:09,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:09,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:09,998 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 20:32:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:09,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408694107] [2022-11-02 20:32:09,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408694107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:09,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:09,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:32:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877607862] [2022-11-02 20:32:10,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:10,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:32:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:10,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:32:10,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:32:10,004 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:10,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 259 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:10,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:10,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:10,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:10,867 INFO L130 PetriNetUnfolder]: 513/1876 cut-off events. [2022-11-02 20:32:10,867 INFO L131 PetriNetUnfolder]: For 11935/12186 co-relation queries the response was YES. [2022-11-02 20:32:10,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1876 events. 513/1876 cut-off events. For 11935/12186 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14867 event pairs, 64 based on Foata normal form. 127/1936 useless extension candidates. Maximal degree in co-relation 3646. Up to 347 conditions per place. [2022-11-02 20:32:10,898 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 144 changer transitions 3/301 dead transitions. [2022-11-02 20:32:10,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 301 transitions, 3277 flow [2022-11-02 20:32:10,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:32:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:32:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2022-11-02 20:32:10,903 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-02 20:32:10,904 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2022-11-02 20:32:10,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2022-11-02 20:32:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:10,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2022-11-02 20:32:10,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 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 20:32:10,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:10,913 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 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 20:32:10,913 INFO L175 Difference]: Start difference. First operand has 181 places, 259 transitions, 2604 flow. Second operand 10 states and 1136 transitions. [2022-11-02 20:32:10,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 301 transitions, 3277 flow [2022-11-02 20:32:10,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 301 transitions, 3132 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-11-02 20:32:10,955 INFO L231 Difference]: Finished difference. Result has 185 places, 263 transitions, 2824 flow [2022-11-02 20:32:10,956 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=185, PETRI_TRANSITIONS=263} [2022-11-02 20:32:10,957 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 49 predicate places. [2022-11-02 20:32:10,957 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 263 transitions, 2824 flow [2022-11-02 20:32:10,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 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 20:32:10,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:10,959 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] [2022-11-02 20:32:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:32:10,960 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1893173668, now seen corresponding path program 13 times [2022-11-02 20:32:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:10,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037111432] [2022-11-02 20:32:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:10,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:11,342 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 20:32:11,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:11,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037111432] [2022-11-02 20:32:11,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037111432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:11,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:11,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:32:11,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780150443] [2022-11-02 20:32:11,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:11,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:32:11,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:32:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:32:11,348 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:11,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 263 transitions, 2824 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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 20:32:11,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:11,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:11,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:12,277 INFO L130 PetriNetUnfolder]: 513/1886 cut-off events. [2022-11-02 20:32:12,277 INFO L131 PetriNetUnfolder]: For 13517/13789 co-relation queries the response was YES. [2022-11-02 20:32:12,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8409 conditions, 1886 events. 513/1886 cut-off events. For 13517/13789 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14975 event pairs, 64 based on Foata normal form. 122/1941 useless extension candidates. Maximal degree in co-relation 3700. Up to 334 conditions per place. [2022-11-02 20:32:12,310 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 67 selfloop transitions, 141 changer transitions 8/309 dead transitions. [2022-11-02 20:32:12,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 309 transitions, 3526 flow [2022-11-02 20:32:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:32:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:32:12,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1248 transitions. [2022-11-02 20:32:12,317 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7989756722151088 [2022-11-02 20:32:12,318 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1248 transitions. [2022-11-02 20:32:12,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1248 transitions. [2022-11-02 20:32:12,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:12,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1248 transitions. [2022-11-02 20:32:12,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 11 states have internal predecessors, (1248), 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 20:32:12,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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 20:32:12,330 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 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 20:32:12,331 INFO L175 Difference]: Start difference. First operand has 185 places, 263 transitions, 2824 flow. Second operand 11 states and 1248 transitions. [2022-11-02 20:32:12,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 309 transitions, 3526 flow [2022-11-02 20:32:12,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 309 transitions, 3357 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-02 20:32:12,384 INFO L231 Difference]: Finished difference. Result has 190 places, 260 transitions, 2886 flow [2022-11-02 20:32:12,384 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=190, PETRI_TRANSITIONS=260} [2022-11-02 20:32:12,386 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 54 predicate places. [2022-11-02 20:32:12,386 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 260 transitions, 2886 flow [2022-11-02 20:32:12,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 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 20:32:12,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:12,388 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] [2022-11-02 20:32:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:32:12,389 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:12,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash -214584194, now seen corresponding path program 14 times [2022-11-02 20:32:12,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:12,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418243651] [2022-11-02 20:32:12,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:12,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:12,909 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 20:32:12,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:12,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418243651] [2022-11-02 20:32:12,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418243651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:12,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:12,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:32:12,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098507281] [2022-11-02 20:32:12,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:12,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:32:12,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:12,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:32:12,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:32:12,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:12,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 260 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:12,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:12,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:12,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:13,928 INFO L130 PetriNetUnfolder]: 506/1852 cut-off events. [2022-11-02 20:32:13,928 INFO L131 PetriNetUnfolder]: For 14825/15110 co-relation queries the response was YES. [2022-11-02 20:32:13,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 1852 events. 506/1852 cut-off events. For 14825/15110 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14759 event pairs, 60 based on Foata normal form. 137/1916 useless extension candidates. Maximal degree in co-relation 6672. Up to 329 conditions per place. [2022-11-02 20:32:13,961 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 71 selfloop transitions, 146 changer transitions 10/320 dead transitions. [2022-11-02 20:32:13,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 320 transitions, 3803 flow [2022-11-02 20:32:13,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:32:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:32:13,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2022-11-02 20:32:13,967 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.790241448692153 [2022-11-02 20:32:13,967 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2022-11-02 20:32:13,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2022-11-02 20:32:13,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:13,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2022-11-02 20:32:13,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 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 20:32:13,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:13,980 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:13,981 INFO L175 Difference]: Start difference. First operand has 190 places, 260 transitions, 2886 flow. Second operand 14 states and 1571 transitions. [2022-11-02 20:32:13,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 320 transitions, 3803 flow [2022-11-02 20:32:14,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 320 transitions, 3639 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-11-02 20:32:14,040 INFO L231 Difference]: Finished difference. Result has 197 places, 265 transitions, 3119 flow [2022-11-02 20:32:14,041 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3119, PETRI_PLACES=197, PETRI_TRANSITIONS=265} [2022-11-02 20:32:14,042 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 61 predicate places. [2022-11-02 20:32:14,042 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 265 transitions, 3119 flow [2022-11-02 20:32:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:14,044 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] [2022-11-02 20:32:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:32:14,044 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:14,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:14,045 INFO L85 PathProgramCache]: Analyzing trace with hash -316378714, now seen corresponding path program 15 times [2022-11-02 20:32:14,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:14,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287524841] [2022-11-02 20:32:14,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:14,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:14,494 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 20:32:14,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:14,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287524841] [2022-11-02 20:32:14,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287524841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:14,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:14,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:32:14,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676813565] [2022-11-02 20:32:14,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:14,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:32:14,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:14,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:32:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:32:14,500 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:14,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 265 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:14,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:14,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:14,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:15,544 INFO L130 PetriNetUnfolder]: 509/1979 cut-off events. [2022-11-02 20:32:15,544 INFO L131 PetriNetUnfolder]: For 18004/18284 co-relation queries the response was YES. [2022-11-02 20:32:15,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 1979 events. 509/1979 cut-off events. For 18004/18284 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16352 event pairs, 73 based on Foata normal form. 129/2040 useless extension candidates. Maximal degree in co-relation 4206. Up to 333 conditions per place. [2022-11-02 20:32:15,574 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 62 selfloop transitions, 122 changer transitions 54/331 dead transitions. [2022-11-02 20:32:15,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 4174 flow [2022-11-02 20:32:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:32:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:32:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1574 transitions. [2022-11-02 20:32:15,580 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7917505030181087 [2022-11-02 20:32:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1574 transitions. [2022-11-02 20:32:15,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1574 transitions. [2022-11-02 20:32:15,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:15,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1574 transitions. [2022-11-02 20:32:15,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.42857142857143) internal successors, (1574), 14 states have internal predecessors, (1574), 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 20:32:15,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:15,592 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:15,593 INFO L175 Difference]: Start difference. First operand has 197 places, 265 transitions, 3119 flow. Second operand 14 states and 1574 transitions. [2022-11-02 20:32:15,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 4174 flow [2022-11-02 20:32:15,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 331 transitions, 3846 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-11-02 20:32:15,662 INFO L231 Difference]: Finished difference. Result has 202 places, 241 transitions, 2586 flow [2022-11-02 20:32:15,662 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2586, PETRI_PLACES=202, PETRI_TRANSITIONS=241} [2022-11-02 20:32:15,663 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 66 predicate places. [2022-11-02 20:32:15,663 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 241 transitions, 2586 flow [2022-11-02 20:32:15,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:15,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:15,665 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] [2022-11-02 20:32:15,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:32:15,666 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:15,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1973674890, now seen corresponding path program 16 times [2022-11-02 20:32:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:15,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516491041] [2022-11-02 20:32:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:15,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:16,128 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 20:32:16,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:16,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516491041] [2022-11-02 20:32:16,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516491041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:16,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:16,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:32:16,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633142118] [2022-11-02 20:32:16,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:16,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:32:16,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:16,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:32:16,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:32:16,138 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:16,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 241 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:16,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:16,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:16,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:17,094 INFO L130 PetriNetUnfolder]: 433/1738 cut-off events. [2022-11-02 20:32:17,094 INFO L131 PetriNetUnfolder]: For 15958/16272 co-relation queries the response was YES. [2022-11-02 20:32:17,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 1738 events. 433/1738 cut-off events. For 15958/16272 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13917 event pairs, 69 based on Foata normal form. 148/1823 useless extension candidates. Maximal degree in co-relation 4152. Up to 305 conditions per place. [2022-11-02 20:32:17,113 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 66 selfloop transitions, 122 changer transitions 25/305 dead transitions. [2022-11-02 20:32:17,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 305 transitions, 3551 flow [2022-11-02 20:32:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:32:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:32:17,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1572 transitions. [2022-11-02 20:32:17,119 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7907444668008048 [2022-11-02 20:32:17,119 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1572 transitions. [2022-11-02 20:32:17,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1572 transitions. [2022-11-02 20:32:17,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:17,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1572 transitions. [2022-11-02 20:32:17,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.28571428571429) internal successors, (1572), 14 states have internal predecessors, (1572), 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 20:32:17,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:17,131 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:17,132 INFO L175 Difference]: Start difference. First operand has 202 places, 241 transitions, 2586 flow. Second operand 14 states and 1572 transitions. [2022-11-02 20:32:17,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 305 transitions, 3551 flow [2022-11-02 20:32:17,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 305 transitions, 3235 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-11-02 20:32:17,191 INFO L231 Difference]: Finished difference. Result has 203 places, 239 transitions, 2525 flow [2022-11-02 20:32:17,192 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2525, PETRI_PLACES=203, PETRI_TRANSITIONS=239} [2022-11-02 20:32:17,192 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 67 predicate places. [2022-11-02 20:32:17,193 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 239 transitions, 2525 flow [2022-11-02 20:32:17,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:17,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:32:17,194 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] [2022-11-02 20:32:17,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:32:17,195 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-02 20:32:17,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:32:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1664953836, now seen corresponding path program 17 times [2022-11-02 20:32:17,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:32:17,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931174498] [2022-11-02 20:32:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:32:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:32:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:32:17,660 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 20:32:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:32:17,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931174498] [2022-11-02 20:32:17,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931174498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:32:17,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:32:17,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:32:17,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439889924] [2022-11-02 20:32:17,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:32:17,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:32:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:32:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:32:17,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:32:17,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-02 20:32:17,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 239 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:17,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:32:17,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-02 20:32:17,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:32:18,093 INFO L130 PetriNetUnfolder]: 65/372 cut-off events. [2022-11-02 20:32:18,093 INFO L131 PetriNetUnfolder]: For 3252/3312 co-relation queries the response was YES. [2022-11-02 20:32:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 372 events. 65/372 cut-off events. For 3252/3312 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2072 event pairs, 1 based on Foata normal form. 77/445 useless extension candidates. Maximal degree in co-relation 1663. Up to 65 conditions per place. [2022-11-02 20:32:18,097 INFO L137 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 165/165 dead transitions. [2022-11-02 20:32:18,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 1702 flow [2022-11-02 20:32:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:32:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:32:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2022-11-02 20:32:18,103 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.761569416498994 [2022-11-02 20:32:18,103 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2022-11-02 20:32:18,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2022-11-02 20:32:18,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:32:18,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2022-11-02 20:32:18,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 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 20:32:18,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:18,116 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 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 20:32:18,116 INFO L175 Difference]: Start difference. First operand has 203 places, 239 transitions, 2525 flow. Second operand 14 states and 1514 transitions. [2022-11-02 20:32:18,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 1702 flow [2022-11-02 20:32:18,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 1540 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-02 20:32:18,140 INFO L231 Difference]: Finished difference. Result has 172 places, 0 transitions, 0 flow [2022-11-02 20:32:18,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=172, PETRI_TRANSITIONS=0} [2022-11-02 20:32:18,141 INFO L287 CegarLoopForPetriNet]: 136 programPoint places, 36 predicate places. [2022-11-02 20:32:18,142 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 0 transitions, 0 flow [2022-11-02 20:32:18,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 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 20:32:18,146 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-02 20:32:18,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-02 20:32:18,147 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-02 20:32:18,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-02 20:32:18,148 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-02 20:32:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:32:18,149 INFO L444 BasicCegarLoop]: Path program histogram: [17] [2022-11-02 20:32:18,153 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:32:18,154 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:32:18,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:32:18 BasicIcfg [2022-11-02 20:32:18,160 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:32:18,161 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:32:18,161 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:32:18,161 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:32:18,162 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:31:45" (3/4) ... [2022-11-02 20:32:18,165 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:32:18,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:32:18,173 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:32:18,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-02 20:32:18,174 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-02 20:32:18,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-02 20:32:18,180 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:32:18,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:32:18,181 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:32:18,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:32:18,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:32:18,234 INFO L158 Benchmark]: Toolchain (without parser) took 34829.27ms. Allocated memory was 113.2MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 79.1MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-02 20:32:18,235 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 88.1MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:32:18,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.91ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 87.1MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:32:18,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.38ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 84.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:18,236 INFO L158 Benchmark]: Boogie Preprocessor took 34.06ms. Allocated memory is still 113.2MB. Free memory was 84.9MB in the beginning and 83.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:32:18,237 INFO L158 Benchmark]: RCFGBuilder took 967.25ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 61.2MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:32:18,237 INFO L158 Benchmark]: TraceAbstraction took 33147.98ms. Allocated memory was 113.2MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 60.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-02 20:32:18,238 INFO L158 Benchmark]: Witness Printer took 72.76ms. Allocated memory is still 3.2GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:32:18,241 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 88.1MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.91ms. Allocated memory is still 113.2MB. Free memory was 78.9MB in the beginning and 87.1MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.38ms. Allocated memory is still 113.2MB. Free memory was 87.1MB in the beginning and 84.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.06ms. Allocated memory is still 113.2MB. Free memory was 84.9MB in the beginning and 83.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 967.25ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 61.2MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 33147.98ms. Allocated memory was 113.2MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 60.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 72.76ms. Allocated memory is still 3.2GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.9s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1218 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1218 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1578 mSDsCounter, 593 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4109 IncrementalHoareTripleChecker+Invalid, 4702 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 593 mSolverCounterUnsat, 234 mSDtfsCounter, 4109 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3119occurred in iteration=14, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2057 NumberOfCodeBlocks, 2057 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2040 ConstructedInterpolants, 0 QuantifiedInterpolants, 5244 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:32:18,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f134e772-76ed-4061-b682-e46dffd12e41/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE