./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3 --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 6d7cb37edef68135cf37fb72c0f8e748b042580b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3 --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 6d7cb37edef68135cf37fb72c0f8e748b042580b .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:21:24,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:21:24,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:21:24,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:21:24,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:21:24,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:21:24,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:21:24,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:21:24,789 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:21:24,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:21:24,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:21:24,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:21:24,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:21:24,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:21:24,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:21:24,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:21:24,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:21:24,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:21:24,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:21:24,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:21:24,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:21:24,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:21:24,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:21:24,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:21:24,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:21:24,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:21:24,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:21:24,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:21:24,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:21:24,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:21:24,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:21:24,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:21:24,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:21:24,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:21:24,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:21:24,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:21:24,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:21:24,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:21:24,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:21:24,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:21:24,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:21:24,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:21:24,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:21:24,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:21:24,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:21:24,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:21:24,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:21:24,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:21:24,869 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:21:24,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:21:24,870 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:21:24,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:21:24,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:21:24,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:21:24,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:21:24,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:21:24,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:21:24,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:21:24,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:21:24,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:21:24,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:21:24,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:21:24,873 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:21:24,873 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:21:24,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:24,874 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:21:24,874 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:21:24,874 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:21:24,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:21:24,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:21:24,875 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:21:24,875 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:21:24,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:21:24,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:21:24,876 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_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6d7cb37edef68135cf37fb72c0f8e748b042580b [2021-10-15 19:21:25,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:21:25,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:21:25,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:21:25,243 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:21:25,244 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:21:25,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-15 19:21:25,333 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9081b253c/d74c746337c844b1976db814200815c4/FLAGd35d5d21d [2021-10-15 19:21:25,973 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:21:25,973 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i [2021-10-15 19:21:25,981 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9081b253c/d74c746337c844b1976db814200815c4/FLAGd35d5d21d [2021-10-15 19:21:26,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9081b253c/d74c746337c844b1976db814200815c4 [2021-10-15 19:21:26,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:21:26,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:21:26,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:26,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:21:26,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:21:26,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,326 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@597eea4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26, skipping insertion in model container [2021-10-15 19:21:26,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:21:26,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:21:26,610 WARN L228 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_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-15 19:21:26,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:26,624 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:21:26,651 WARN L228 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_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-15 19:21:26,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:26,671 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:21:26,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26 WrapperNode [2021-10-15 19:21:26,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:26,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:26,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:21:26,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:21:26,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:26,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:21:26,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:21:26,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:21:26,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:21:26,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:21:26,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:21:26,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:21:26,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (1/1) ... [2021-10-15 19:21:26,777 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:26,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:21:26,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:21:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:21:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:21:26,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:21:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:21:26,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:21:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:21:26,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:21:27,275 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:21:27,275 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:21:27,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:27 BoogieIcfgContainer [2021-10-15 19:21:27,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:21:27,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:21:27,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:21:27,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:21:27,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:21:26" (1/3) ... [2021-10-15 19:21:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5f7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:27, skipping insertion in model container [2021-10-15 19:21:27,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:26" (2/3) ... [2021-10-15 19:21:27,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5f7aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:27, skipping insertion in model container [2021-10-15 19:21:27,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:27" (3/3) ... [2021-10-15 19:21:27,286 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-15 19:21:27,292 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:21:27,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:21:27,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:21:27,354 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:21:27,354 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:21:27,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:21:27,395 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-10-15 19:21:27,395 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:27,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:21:27,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:21:27,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 33 transitions, 66 flow [2021-10-15 19:21:27,411 INFO L129 PetriNetUnfolder]: 10/32 cut-off events. [2021-10-15 19:21:27,411 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:27,412 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:27,413 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:27,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:27,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:27,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2132287054, now seen corresponding path program 1 times [2021-10-15 19:21:27,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:27,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897635824] [2021-10-15 19:21:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:27,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:27,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:27,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897635824] [2021-10-15 19:21:27,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897635824] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:27,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:27,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:21:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697401834] [2021-10-15 19:21:27,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:21:27,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:27,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:21:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:21:27,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:21:27,808 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 33 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-15 19:21:27,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:27,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:21:27,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:27,859 INFO L129 PetriNetUnfolder]: 5/30 cut-off events. [2021-10-15 19:21:27,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:27,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 30 events. 5/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 1. Up to 16 conditions per place. [2021-10-15 19:21:27,862 INFO L132 encePairwiseOnDemand]: 32/40 looper letters, 15 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2021-10-15 19:21:27,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 94 flow [2021-10-15 19:21:27,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:21:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:21:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2021-10-15 19:21:27,877 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.65 [2021-10-15 19:21:27,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 78 transitions. [2021-10-15 19:21:27,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 78 transitions. [2021-10-15 19:21:27,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:27,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 78 transitions. [2021-10-15 19:21:27,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-10-15 19:21:27,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2021-10-15 19:21:27,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2021-10-15 19:21:27,893 INFO L186 Difference]: Start difference. First operand has 24 places, 33 transitions, 66 flow. Second operand 3 states and 78 transitions. [2021-10-15 19:21:27,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 94 flow [2021-10-15 19:21:27,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 94 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:27,900 INFO L242 Difference]: Finished difference. Result has 27 places, 29 transitions, 68 flow [2021-10-15 19:21:27,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=27, PETRI_TRANSITIONS=29} [2021-10-15 19:21:27,903 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2021-10-15 19:21:27,904 INFO L470 AbstractCegarLoop]: Abstraction has has 27 places, 29 transitions, 68 flow [2021-10-15 19:21:27,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-10-15 19:21:27,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:27,904 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:27,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:21:27,905 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:27,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:27,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2143387046, now seen corresponding path program 1 times [2021-10-15 19:21:27,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:27,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490238522] [2021-10-15 19:21:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:27,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-15 19:21:27,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:27,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490238522] [2021-10-15 19:21:27,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490238522] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:27,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:27,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:21:27,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121867069] [2021-10-15 19:21:27,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:21:27,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:27,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:21:27,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:21:27,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2021-10-15 19:21:27,992 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 29 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-10-15 19:21:27,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:27,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2021-10-15 19:21:27,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:28,158 INFO L129 PetriNetUnfolder]: 5/36 cut-off events. [2021-10-15 19:21:28,158 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:21:28,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 36 events. 5/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 55. Up to 18 conditions per place. [2021-10-15 19:21:28,160 INFO L132 encePairwiseOnDemand]: 30/40 looper letters, 18 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2021-10-15 19:21:28,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 130 flow [2021-10-15 19:21:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:21:28,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:21:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2021-10-15 19:21:28,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.525 [2021-10-15 19:21:28,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2021-10-15 19:21:28,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2021-10-15 19:21:28,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:28,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2021-10-15 19:21:28,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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) [2021-10-15 19:21:28,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:28,181 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:28,182 INFO L186 Difference]: Start difference. First operand has 27 places, 29 transitions, 68 flow. Second operand 4 states and 84 transitions. [2021-10-15 19:21:28,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 130 flow [2021-10-15 19:21:28,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 128 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:21:28,186 INFO L242 Difference]: Finished difference. Result has 30 places, 32 transitions, 104 flow [2021-10-15 19:21:28,187 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=32} [2021-10-15 19:21:28,187 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2021-10-15 19:21:28,187 INFO L470 AbstractCegarLoop]: Abstraction has has 30 places, 32 transitions, 104 flow [2021-10-15 19:21:28,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-10-15 19:21:28,188 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:28,188 INFO L254 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] [2021-10-15 19:21:28,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:21:28,189 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:28,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:28,189 INFO L82 PathProgramCache]: Analyzing trace with hash 46775620, now seen corresponding path program 1 times [2021-10-15 19:21:28,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:28,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128069187] [2021-10-15 19:21:28,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:28,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:21:28,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:28,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128069187] [2021-10-15 19:21:28,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128069187] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:28,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:28,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:21:28,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373972382] [2021-10-15 19:21:28,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:21:28,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:21:28,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:21:28,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 40 [2021-10-15 19:21:28,371 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 32 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-10-15 19:21:28,371 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:28,371 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 40 [2021-10-15 19:21:28,372 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:28,446 INFO L129 PetriNetUnfolder]: 5/38 cut-off events. [2021-10-15 19:21:28,447 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-15 19:21:28,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 38 events. 5/38 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 61. Up to 18 conditions per place. [2021-10-15 19:21:28,450 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 15 selfloop transitions, 3 changer transitions 0/34 dead transitions. [2021-10-15 19:21:28,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 144 flow [2021-10-15 19:21:28,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:21:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:21:28,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2021-10-15 19:21:28,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.54375 [2021-10-15 19:21:28,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 87 transitions. [2021-10-15 19:21:28,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 87 transitions. [2021-10-15 19:21:28,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:28,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 87 transitions. [2021-10-15 19:21:28,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-10-15 19:21:28,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:28,464 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:28,464 INFO L186 Difference]: Start difference. First operand has 30 places, 32 transitions, 104 flow. Second operand 4 states and 87 transitions. [2021-10-15 19:21:28,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 144 flow [2021-10-15 19:21:28,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:21:28,468 INFO L242 Difference]: Finished difference. Result has 32 places, 33 transitions, 110 flow [2021-10-15 19:21:28,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2021-10-15 19:21:28,468 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2021-10-15 19:21:28,468 INFO L470 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 110 flow [2021-10-15 19:21:28,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-10-15 19:21:28,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:28,469 INFO L254 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] [2021-10-15 19:21:28,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:21:28,470 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:28,471 INFO L82 PathProgramCache]: Analyzing trace with hash -548779230, now seen corresponding path program 1 times [2021-10-15 19:21:28,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:28,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077548430] [2021-10-15 19:21:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:28,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:21:28,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:21:28,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077548430] [2021-10-15 19:21:28,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077548430] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:21:28,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352332625] [2021-10-15 19:21:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:28,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:21:28,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:28,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:21:28,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:21:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:28,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:21:28,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:21:28,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352332625] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:21:28,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:21:28,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-15 19:21:28,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388367203] [2021-10-15 19:21:28,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:21:28,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:21:28,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:21:28,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:21:28,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:21:28,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 110 flow. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2021-10-15 19:21:28,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:28,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:21:28,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:28,941 INFO L129 PetriNetUnfolder]: 5/40 cut-off events. [2021-10-15 19:21:28,941 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:21:28,942 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 40 events. 5/40 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 60. Up to 19 conditions per place. [2021-10-15 19:21:28,942 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 14 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2021-10-15 19:21:28,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 36 transitions, 156 flow [2021-10-15 19:21:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:21:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:21:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 110 transitions. [2021-10-15 19:21:28,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.55 [2021-10-15 19:21:28,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 110 transitions. [2021-10-15 19:21:28,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 110 transitions. [2021-10-15 19:21:28,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:28,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 110 transitions. [2021-10-15 19:21:28,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2021-10-15 19:21:28,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-10-15 19:21:28,949 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2021-10-15 19:21:28,949 INFO L186 Difference]: Start difference. First operand has 32 places, 33 transitions, 110 flow. Second operand 5 states and 110 transitions. [2021-10-15 19:21:28,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 36 transitions, 156 flow [2021-10-15 19:21:28,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:21:28,953 INFO L242 Difference]: Finished difference. Result has 36 places, 35 transitions, 132 flow [2021-10-15 19:21:28,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=36, PETRI_TRANSITIONS=35} [2021-10-15 19:21:28,954 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 12 predicate places. [2021-10-15 19:21:28,954 INFO L470 AbstractCegarLoop]: Abstraction has has 36 places, 35 transitions, 132 flow [2021-10-15 19:21:28,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 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) [2021-10-15 19:21:28,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:28,955 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:29,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:29,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:21:29,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:29,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 2 times [2021-10-15 19:21:29,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:29,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551232069] [2021-10-15 19:21:29,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:29,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:29,253 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:21:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:29,358 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:21:29,358 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:21:29,360 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:21:29,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:21:29,372 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:21:29,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:21:29 BoogieIcfgContainer [2021-10-15 19:21:29,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:21:29,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:21:29,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:21:29,426 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:21:29,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:27" (3/4) ... [2021-10-15 19:21:29,430 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:21:29,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:21:29,432 INFO L168 Benchmark]: Toolchain (without parser) took 3117.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.6 MB in the beginning and 51.2 MB in the end (delta: 7.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:29,433 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:29,434 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.13 ms. Allocated memory is still 100.7 MB. Free memory was 58.4 MB in the beginning and 74.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:29,434 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 72.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:29,435 INFO L168 Benchmark]: Boogie Preprocessor took 39.87 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 70.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:29,436 INFO L168 Benchmark]: RCFGBuilder took 511.27 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 58.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:29,437 INFO L168 Benchmark]: TraceAbstraction took 2145.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.2 MB in the beginning and 51.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:29,437 INFO L168 Benchmark]: Witness Printer took 4.93 ms. Allocated memory is still 121.6 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:29,441 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 100.7 MB. Free memory is still 74.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.13 ms. Allocated memory is still 100.7 MB. Free memory was 58.4 MB in the beginning and 74.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.61 ms. Allocated memory is still 100.7 MB. Free memory was 74.0 MB in the beginning and 72.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.87 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 70.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 511.27 ms. Allocated memory is still 100.7 MB. Free memory was 70.7 MB in the beginning and 58.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2145.81 ms. Allocated memory was 100.7 MB in the beginning and 121.6 MB in the end (delta: 21.0 MB). Free memory was 58.2 MB in the beginning and 51.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.93 ms. Allocated memory is still 121.6 MB. Free memory is still 51.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; VAL [N=0] [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND FALSE !(i < N) VAL [N=2] [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) VAL [N=2] [L27] return res; VAL [N=2] [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) VAL [N=2] [L27] return res; VAL [N=2] [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [N=2] [L50] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3 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 -> 6d7cb37edef68135cf37fb72c0f8e748b042580b [2021-10-15 19:21:32,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:21:32,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:21:32,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:21:32,979 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:21:32,980 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:21:32,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-15 19:21:33,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9e3b1a1cd/ee1c0ca00f6e415dae5048a161d998ac/FLAGd01227cde [2021-10-15 19:21:33,611 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:21:33,612 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i [2021-10-15 19:21:33,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9e3b1a1cd/ee1c0ca00f6e415dae5048a161d998ac/FLAGd01227cde [2021-10-15 19:21:33,950 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/data/9e3b1a1cd/ee1c0ca00f6e415dae5048a161d998ac [2021-10-15 19:21:33,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:21:33,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:21:33,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:33,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:21:33,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:21:33,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:33" (1/1) ... [2021-10-15 19:21:33,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175bf432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:33, skipping insertion in model container [2021-10-15 19:21:33,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:33" (1/1) ... [2021-10-15 19:21:33,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:21:34,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:21:34,285 WARN L228 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_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-15 19:21:34,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:34,305 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:21:34,402 WARN L228 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_58831d7c-6287-4b51-ac84-ff6f5fcef390/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-15 19:21:34,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:34,420 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:21:34,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34 WrapperNode [2021-10-15 19:21:34,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:34,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:34,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:21:34,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:21:34,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:34,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:21:34,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:21:34,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:21:34,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,488 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:21:34,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:21:34,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:21:34,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:21:34,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (1/1) ... [2021-10-15 19:21:34,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:34,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:34,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:21:34,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:21:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:21:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:21:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:21:34,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:21:34,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:21:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:21:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:21:35,098 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:21:35,098 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-15 19:21:35,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:35 BoogieIcfgContainer [2021-10-15 19:21:35,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:21:35,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:21:35,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:21:35,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:21:35,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:21:33" (1/3) ... [2021-10-15 19:21:35,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f046b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:35, skipping insertion in model container [2021-10-15 19:21:35,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:34" (2/3) ... [2021-10-15 19:21:35,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f046b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:35, skipping insertion in model container [2021-10-15 19:21:35,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:35" (3/3) ... [2021-10-15 19:21:35,109 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-15 19:21:35,115 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:21:35,115 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:21:35,193 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:21:35,200 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:21:35,200 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:21:35,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:21:35,239 INFO L129 PetriNetUnfolder]: 12/40 cut-off events. [2021-10-15 19:21:35,240 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:35,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 40 events. 12/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 37 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:21:35,242 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 40 transitions, 80 flow [2021-10-15 19:21:35,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 33 transitions, 66 flow [2021-10-15 19:21:35,254 INFO L129 PetriNetUnfolder]: 10/32 cut-off events. [2021-10-15 19:21:35,254 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:35,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:35,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:35,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:35,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2132287054, now seen corresponding path program 1 times [2021-10-15 19:21:35,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:35,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043002610] [2021-10-15 19:21:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:35,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:35,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:35,280 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:35,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:21:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:21:35,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:35,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:35,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:21:35,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043002610] [2021-10-15 19:21:35,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043002610] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:35,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:35,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:21:35,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231373459] [2021-10-15 19:21:35,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:21:35,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:21:35,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:21:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:21:35,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 40 [2021-10-15 19:21:35,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 33 transitions, 66 flow. Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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) [2021-10-15 19:21:35,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:35,573 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 40 [2021-10-15 19:21:35,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:35,584 INFO L129 PetriNetUnfolder]: 5/28 cut-off events. [2021-10-15 19:21:35,584 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:35,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 28 events. 5/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 5/28 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2021-10-15 19:21:35,587 INFO L132 encePairwiseOnDemand]: 35/40 looper letters, 0 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2021-10-15 19:21:35,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 56 flow [2021-10-15 19:21:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:21:35,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:21:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 73 transitions. [2021-10-15 19:21:35,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9125 [2021-10-15 19:21:35,600 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 73 transitions. [2021-10-15 19:21:35,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 73 transitions. [2021-10-15 19:21:35,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:35,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 73 transitions. [2021-10-15 19:21:35,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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) [2021-10-15 19:21:35,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-15 19:21:35,610 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2021-10-15 19:21:35,613 INFO L186 Difference]: Start difference. First operand has 24 places, 33 transitions, 66 flow. Second operand 2 states and 73 transitions. [2021-10-15 19:21:35,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 56 flow [2021-10-15 19:21:35,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 56 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:35,618 INFO L242 Difference]: Finished difference. Result has 25 places, 28 transitions, 56 flow [2021-10-15 19:21:35,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=28} [2021-10-15 19:21:35,622 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2021-10-15 19:21:35,622 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 28 transitions, 56 flow [2021-10-15 19:21:35,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 states have internal predecessors, (71), 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) [2021-10-15 19:21:35,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:35,623 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:35,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 19:21:35,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:21:35,836 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:35,838 INFO L82 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-10-15 19:21:35,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:35,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479598797] [2021-10-15 19:21:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:35,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:35,848 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:35,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:21:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:35,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-15 19:21:35,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:36,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:36,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:21:36,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479598797] [2021-10-15 19:21:36,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479598797] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:21:36,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:36,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:21:36,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518824714] [2021-10-15 19:21:36,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:21:36,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:21:36,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:21:36,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:21:36,129 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2021-10-15 19:21:36,129 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 28 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-10-15 19:21:36,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:36,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2021-10-15 19:21:36,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:36,208 INFO L129 PetriNetUnfolder]: 5/31 cut-off events. [2021-10-15 19:21:36,208 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:36,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 31 events. 5/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 49. Up to 14 conditions per place. [2021-10-15 19:21:36,210 INFO L132 encePairwiseOnDemand]: 36/40 looper letters, 14 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2021-10-15 19:21:36,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 31 transitions, 98 flow [2021-10-15 19:21:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:21:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:21:36,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2021-10-15 19:21:36,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.575 [2021-10-15 19:21:36,213 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 92 transitions. [2021-10-15 19:21:36,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 92 transitions. [2021-10-15 19:21:36,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:36,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 92 transitions. [2021-10-15 19:21:36,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-10-15 19:21:36,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:36,219 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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) [2021-10-15 19:21:36,219 INFO L186 Difference]: Start difference. First operand has 25 places, 28 transitions, 56 flow. Second operand 4 states and 92 transitions. [2021-10-15 19:21:36,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 31 transitions, 98 flow [2021-10-15 19:21:36,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 98 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:36,223 INFO L242 Difference]: Finished difference. Result has 31 places, 30 transitions, 82 flow [2021-10-15 19:21:36,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=31, PETRI_TRANSITIONS=30} [2021-10-15 19:21:36,224 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 7 predicate places. [2021-10-15 19:21:36,224 INFO L470 AbstractCegarLoop]: Abstraction has has 31 places, 30 transitions, 82 flow [2021-10-15 19:21:36,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2021-10-15 19:21:36,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:36,225 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:36,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:36,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:21:36,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:36,440 INFO L82 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-10-15 19:21:36,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:36,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919575282] [2021-10-15 19:21:36,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:36,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:36,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:36,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:36,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:21:36,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:36,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:21:36,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:36,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:37,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:21:37,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919575282] [2021-10-15 19:21:37,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919575282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:21:37,041 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:21:37,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-15 19:21:37,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366736091] [2021-10-15 19:21:37,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:21:37,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:21:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:21:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:21:37,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2021-10-15 19:21:37,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 30 transitions, 82 flow. Second operand has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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) [2021-10-15 19:21:37,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:37,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2021-10-15 19:21:37,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:37,426 INFO L129 PetriNetUnfolder]: 9/66 cut-off events. [2021-10-15 19:21:37,426 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-15 19:21:37,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 66 events. 9/66 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 69 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 136. Up to 12 conditions per place. [2021-10-15 19:21:37,428 INFO L132 encePairwiseOnDemand]: 25/40 looper letters, 24 selfloop transitions, 26 changer transitions 0/58 dead transitions. [2021-10-15 19:21:37,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 256 flow [2021-10-15 19:21:37,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:21:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:21:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2021-10-15 19:21:37,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.465 [2021-10-15 19:21:37,433 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 186 transitions. [2021-10-15 19:21:37,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 186 transitions. [2021-10-15 19:21:37,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:37,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 186 transitions. [2021-10-15 19:21:37,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 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) [2021-10-15 19:21:37,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 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) [2021-10-15 19:21:37,440 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 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) [2021-10-15 19:21:37,440 INFO L186 Difference]: Start difference. First operand has 31 places, 30 transitions, 82 flow. Second operand 10 states and 186 transitions. [2021-10-15 19:21:37,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 256 flow [2021-10-15 19:21:37,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:21:37,446 INFO L242 Difference]: Finished difference. Result has 45 places, 48 transitions, 251 flow [2021-10-15 19:21:37,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=251, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2021-10-15 19:21:37,447 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2021-10-15 19:21:37,447 INFO L470 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 251 flow [2021-10-15 19:21:37,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.916666666666666) internal successors, (179), 12 states have internal predecessors, (179), 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) [2021-10-15 19:21:37,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:37,448 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:37,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:21:37,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:37,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:37,662 INFO L82 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-10-15 19:21:37,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:37,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120341286] [2021-10-15 19:21:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:37,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:37,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:37,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:37,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:21:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:37,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-15 19:21:37,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:38,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:21:38,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:38,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:21:38,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:21:38,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120341286] [2021-10-15 19:21:38,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120341286] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:21:38,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:21:38,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-15 19:21:38,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422550372] [2021-10-15 19:21:38,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-15 19:21:38,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:21:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-15 19:21:38,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-15 19:21:38,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2021-10-15 19:21:38,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 251 flow. Second operand has 12 states, 12 states have (on average 18.416666666666668) internal successors, (221), 12 states have internal predecessors, (221), 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) [2021-10-15 19:21:38,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:21:38,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2021-10-15 19:21:38,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:21:38,958 INFO L129 PetriNetUnfolder]: 9/69 cut-off events. [2021-10-15 19:21:38,958 INFO L130 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2021-10-15 19:21:38,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 69 events. 9/69 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 205. Up to 16 conditions per place. [2021-10-15 19:21:38,960 INFO L132 encePairwiseOnDemand]: 33/40 looper letters, 32 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2021-10-15 19:21:38,960 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 399 flow [2021-10-15 19:21:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:21:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:21:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2021-10-15 19:21:38,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5 [2021-10-15 19:21:38,963 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 200 transitions. [2021-10-15 19:21:38,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 200 transitions. [2021-10-15 19:21:38,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:21:38,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 200 transitions. [2021-10-15 19:21:38,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.0) internal successors, (200), 10 states have internal predecessors, (200), 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) [2021-10-15 19:21:38,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 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) [2021-10-15 19:21:38,968 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 40.0) internal successors, (440), 11 states have internal predecessors, (440), 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) [2021-10-15 19:21:38,969 INFO L186 Difference]: Start difference. First operand has 45 places, 48 transitions, 251 flow. Second operand 10 states and 200 transitions. [2021-10-15 19:21:38,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 399 flow [2021-10-15 19:21:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 394 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 19:21:38,977 INFO L242 Difference]: Finished difference. Result has 56 places, 53 transitions, 302 flow [2021-10-15 19:21:38,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=302, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2021-10-15 19:21:38,978 INFO L334 CegarLoopForPetriNet]: 24 programPoint places, 32 predicate places. [2021-10-15 19:21:38,978 INFO L470 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 302 flow [2021-10-15 19:21:38,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.416666666666668) internal successors, (221), 12 states have internal predecessors, (221), 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) [2021-10-15 19:21:38,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:38,979 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:21:38,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:39,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:21:39,193 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:39,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:39,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-10-15 19:21:39,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:39,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270402095] [2021-10-15 19:21:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:39,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:39,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:39,196 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:39,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:21:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:39,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-15 19:21:39,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:40,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:40,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:21:40,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:40,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:21:40,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:21:40,792 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-15 19:21:40,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-15 19:21:40,967 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:21:40,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:21:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:41,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:44,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-15 19:21:44,372 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:21:44,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 156 [2021-10-15 19:21:44,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-15 19:21:44,434 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:21:44,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-15 19:21:45,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:21:45,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270402095] [2021-10-15 19:21:45,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:21:45,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [929998202] [2021-10-15 19:21:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:45,223 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-15 19:21:45,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/cvc4 [2021-10-15 19:21:45,237 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-15 19:21:45,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-10-15 19:21:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:45,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-15 19:21:45,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:45,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-10-15 19:21:45,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:45,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:21:46,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:46,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:21:46,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:21:46,322 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-15 19:21:46,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-15 19:21:46,406 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:21:46,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:21:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:46,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:49,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 223 [2021-10-15 19:21:49,841 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:21:49,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 714 treesize of output 588 [2021-10-15 19:21:52,255 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:21:52,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020263346] [2021-10-15 19:21:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:52,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:21:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:52,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:21:52,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-15 19:21:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:53,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-15 19:21:53,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:53,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:53,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-15 19:21:54,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-15 19:21:54,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-15 19:21:54,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-15 19:21:54,947 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-15 19:21:54,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-15 19:21:55,037 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-15 19:21:55,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-15 19:21:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-15 19:21:55,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:21:58,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-15 19:21:58,257 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:21:58,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 183 [2021-10-15 19:21:58,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-15 19:21:58,310 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-15 19:21:58,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-15 19:21:58,632 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-15 19:21:58,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:21:58,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-15 19:21:58,633 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-15 19:21:58,634 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-15 19:21:58,641 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:21:58,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:58,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-15 19:21:59,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2021-10-15 19:21:59,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_58831d7c-6287-4b51-ac84-ff6f5fcef390/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt [2021-10-15 19:21:59,262 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:21:59,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:21:59 BoogieIcfgContainer [2021-10-15 19:21:59,286 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:21:59,287 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:21:59,287 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:21:59,288 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:21:59,290 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:35" (3/4) ... [2021-10-15 19:21:59,297 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:21:59,304 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:21:59,305 INFO L168 Benchmark]: Toolchain (without parser) took 25346.70 ms. Allocated memory was 48.2 MB in the beginning and 75.5 MB in the end (delta: 27.3 MB). Free memory was 23.3 MB in the beginning and 21.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:59,306 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 29.8 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:59,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 459.77 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.1 MB in the beginning and 45.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:59,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.32 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:59,308 INFO L168 Benchmark]: Boogie Preprocessor took 38.30 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 42.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:59,309 INFO L168 Benchmark]: RCFGBuilder took 589.16 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 44.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:59,310 INFO L168 Benchmark]: TraceAbstraction took 24183.45 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.2 MB in the beginning and 21.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:59,313 INFO L168 Benchmark]: Witness Printer took 17.22 ms. Allocated memory is still 75.5 MB. Free memory is still 21.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:59,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 48.2 MB. Free memory was 29.8 MB in the beginning and 29.8 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 459.77 ms. Allocated memory was 48.2 MB in the beginning and 62.9 MB in the end (delta: 14.7 MB). Free memory was 23.1 MB in the beginning and 45.5 MB in the end (delta: -22.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.32 ms. Allocated memory is still 62.9 MB. Free memory was 45.3 MB in the beginning and 43.4 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.30 ms. Allocated memory is still 62.9 MB. Free memory was 43.4 MB in the beginning and 42.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 589.16 ms. Allocated memory is still 62.9 MB. Free memory was 41.9 MB in the beginning and 44.8 MB in the end (delta: -2.9 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 24183.45 ms. Allocated memory was 62.9 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Free memory was 44.2 MB in the beginning and 21.1 MB in the end (delta: 23.1 MB). Peak memory consumption was 35.5 MB. Max. memory is 16.1 GB. * Witness Printer took 17.22 ms. Allocated memory is still 75.5 MB. Free memory is still 21.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i