./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY --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 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:10:49,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:10:49,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:10:49,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:10:49,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:10:49,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:10:49,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:10:49,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:10:49,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:10:49,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:10:49,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:10:49,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:10:49,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:10:49,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:10:49,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:10:49,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:10:49,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:10:49,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:10:49,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:10:49,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:10:49,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:10:49,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:10:49,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:10:49,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:10:49,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:10:49,637 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:10:49,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:10:49,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:10:49,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:10:49,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:10:49,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:10:49,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:10:49,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:10:49,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:10:49,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:10:49,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:10:49,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:10:49,652 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:10:49,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:10:49,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:10:49,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:10:49,657 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:10:49,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:10:49,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:10:49,692 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:10:49,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:10:49,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:10:49,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:10:49,695 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:10:49,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:10:49,696 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:10:49,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:10:49,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:10:49,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:10:49,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:10:49,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:10:49,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:10:49,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:10:49,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:10:49,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:10:49,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:10:49,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:10:49,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:10:49,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:10:49,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:10:49,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:10:49,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:10:49,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:10:49,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:10:49,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:10:49,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:10:49,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:10:49,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:10:49,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:10:49,704 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_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2021-11-07 08:10:50,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:10:50,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:10:50,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:10:50,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:10:50,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:10:50,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-11-07 08:10:50,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/data/4dfad31ef/ad54cf93479644bb9bca036749d660cb/FLAG4ca0a7093 [2021-11-07 08:10:50,798 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:10:50,799 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-11-07 08:10:50,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/data/4dfad31ef/ad54cf93479644bb9bca036749d660cb/FLAG4ca0a7093 [2021-11-07 08:10:51,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/data/4dfad31ef/ad54cf93479644bb9bca036749d660cb [2021-11-07 08:10:51,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:10:51,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:10:51,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:10:51,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:10:51,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:10:51,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce07ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51, skipping insertion in model container [2021-11-07 08:10:51,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:10:51,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:10:51,360 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_9738ea71-024f-4a7f-982f-eef92ec89c6f/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-11-07 08:10:51,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:10:51,411 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:10:51,427 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_9738ea71-024f-4a7f-982f-eef92ec89c6f/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-11-07 08:10:51,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:10:51,462 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:10:51,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51 WrapperNode [2021-11-07 08:10:51,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:10:51,464 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:10:51,464 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:10:51,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:10:51,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:10:51,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:10:51,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:10:51,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:10:51,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:10:51,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:10:51,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:10:51,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:10:51,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (1/1) ... [2021-11-07 08:10:51,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:10:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:10:51,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:10:51,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:10:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:10:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:10:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:10:51,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:10:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:10:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:10:51,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:10:52,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:10:52,180 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2021-11-07 08:10:52,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:52 BoogieIcfgContainer [2021-11-07 08:10:52,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:10:52,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:10:52,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:10:52,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:10:52,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:10:51" (1/3) ... [2021-11-07 08:10:52,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4d8b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:52, skipping insertion in model container [2021-11-07 08:10:52,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:10:51" (2/3) ... [2021-11-07 08:10:52,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b4d8b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:10:52, skipping insertion in model container [2021-11-07 08:10:52,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:52" (3/3) ... [2021-11-07 08:10:52,203 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2021-11-07 08:10:52,211 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:10:52,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-07 08:10:52,310 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:10:52,320 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:10:52,320 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 08:10:52,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 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) [2021-11-07 08:10:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 08:10:52,347 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:52,348 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:52,349 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:52,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:52,357 INFO L85 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2021-11-07 08:10:52,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:52,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765698239] [2021-11-07 08:10:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:52,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:52,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:52,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765698239] [2021-11-07 08:10:52,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765698239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:52,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:52,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:10:52,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968805259] [2021-11-07 08:10:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:10:52,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:52,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:10:52,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:52,705 INFO L87 Difference]: Start difference. First operand has 48 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 47 states have internal predecessors, (72), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-07 08:10:52,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:52,838 INFO L93 Difference]: Finished difference Result 137 states and 207 transitions. [2021-11-07 08:10:52,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:10:52,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-11-07 08:10:52,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:52,853 INFO L225 Difference]: With dead ends: 137 [2021-11-07 08:10:52,853 INFO L226 Difference]: Without dead ends: 85 [2021-11-07 08:10:52,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:52,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-07 08:10:52,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 45. [2021-11-07 08:10:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 44 states have internal predecessors, (56), 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) [2021-11-07 08:10:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2021-11-07 08:10:52,931 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 8 [2021-11-07 08:10:52,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:52,932 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2021-11-07 08:10:52,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-07 08:10:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2021-11-07 08:10:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 08:10:52,934 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:52,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:52,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:10:52,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:52,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1436007159, now seen corresponding path program 1 times [2021-11-07 08:10:52,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:52,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747004998] [2021-11-07 08:10:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:52,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:53,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:53,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747004998] [2021-11-07 08:10:53,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747004998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:10:53,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684080083] [2021-11-07 08:10:53,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:53,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:10:53,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:10:53,059 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:10:53,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:10:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:10:53,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:10:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:10:53,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684080083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:10:53,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:10:53,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-07 08:10:53,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878792258] [2021-11-07 08:10:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:10:53,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:53,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:10:53,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:53,282 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:10:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:53,477 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2021-11-07 08:10:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:10:53,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 10 [2021-11-07 08:10:53,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:53,488 INFO L225 Difference]: With dead ends: 166 [2021-11-07 08:10:53,489 INFO L226 Difference]: Without dead ends: 126 [2021-11-07 08:10:53,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:53,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-07 08:10:53,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 47. [2021-11-07 08:10:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 46 states have internal predecessors, (58), 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) [2021-11-07 08:10:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2021-11-07 08:10:53,513 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 10 [2021-11-07 08:10:53,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:53,513 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2021-11-07 08:10:53,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-11-07 08:10:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2021-11-07 08:10:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:10:53,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:53,520 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:53,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:10:53,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-07 08:10:53,726 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:53,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:53,727 INFO L85 PathProgramCache]: Analyzing trace with hash 780809593, now seen corresponding path program 2 times [2021-11-07 08:10:53,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:53,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289126966] [2021-11-07 08:10:53,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:53,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:53,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:10:53,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:53,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289126966] [2021-11-07 08:10:53,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289126966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:53,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:53,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:10:53,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697621540] [2021-11-07 08:10:53,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:10:53,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:53,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:10:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:10:53,837 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 08:10:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:53,896 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2021-11-07 08:10:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:10:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) Word has length 12 [2021-11-07 08:10:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:53,900 INFO L225 Difference]: With dead ends: 92 [2021-11-07 08:10:53,901 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 08:10:53,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:10:53,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 08:10:53,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-11-07 08:10:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 49 states have internal predecessors, (62), 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) [2021-11-07 08:10:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2021-11-07 08:10:53,928 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 12 [2021-11-07 08:10:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:53,929 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2021-11-07 08:10:53,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-07 08:10:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2021-11-07 08:10:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 08:10:53,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:53,931 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:53,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:10:53,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:53,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1692621165, now seen corresponding path program 1 times [2021-11-07 08:10:53,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:53,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528560663] [2021-11-07 08:10:53,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:53,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:10:54,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:54,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528560663] [2021-11-07 08:10:54,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528560663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:54,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:54,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:10:54,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945140866] [2021-11-07 08:10:54,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:10:54,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:10:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:54,007 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-07 08:10:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:54,051 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2021-11-07 08:10:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:10:54,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) Word has length 23 [2021-11-07 08:10:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:54,054 INFO L225 Difference]: With dead ends: 111 [2021-11-07 08:10:54,055 INFO L226 Difference]: Without dead ends: 73 [2021-11-07 08:10:54,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:10:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-07 08:10:54,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2021-11-07 08:10:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 50 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) [2021-11-07 08:10:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2021-11-07 08:10:54,068 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 23 [2021-11-07 08:10:54,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:54,069 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2021-11-07 08:10:54,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-07 08:10:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2021-11-07 08:10:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 08:10:54,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:54,070 INFO L513 BasicCegarLoop]: 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] [2021-11-07 08:10:54,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:10:54,071 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:54,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:54,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2112056943, now seen corresponding path program 1 times [2021-11-07 08:10:54,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:54,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564038993] [2021-11-07 08:10:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:54,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 08:10:54,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:54,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564038993] [2021-11-07 08:10:54,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564038993] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:10:54,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707522827] [2021-11-07 08:10:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:54,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:10:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:10:54,155 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:10:54,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:10:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:54,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:10:54,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:10:54,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:10:54,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707522827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:10:54,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:10:54,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2021-11-07 08:10:54,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119893262] [2021-11-07 08:10:54,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:10:54,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:10:54,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:10:54,405 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-11-07 08:10:54,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:54,723 INFO L93 Difference]: Finished difference Result 312 states and 396 transitions. [2021-11-07 08:10:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 08:10:54,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) Word has length 25 [2021-11-07 08:10:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:54,729 INFO L225 Difference]: With dead ends: 312 [2021-11-07 08:10:54,729 INFO L226 Difference]: Without dead ends: 268 [2021-11-07 08:10:54,732 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-11-07 08:10:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-07 08:10:54,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 72. [2021-11-07 08:10:54,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 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) [2021-11-07 08:10:54,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2021-11-07 08:10:54,764 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 25 [2021-11-07 08:10:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:54,764 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2021-11-07 08:10:54,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 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) [2021-11-07 08:10:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2021-11-07 08:10:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:10:54,766 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:54,766 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:54,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 08:10:54,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:10:54,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash -369930547, now seen corresponding path program 2 times [2021-11-07 08:10:54,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:54,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743574152] [2021-11-07 08:10:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:54,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:10:55,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:55,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743574152] [2021-11-07 08:10:55,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743574152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:55,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:55,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:10:55,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175889787] [2021-11-07 08:10:55,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:10:55,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:55,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:10:55,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:10:55,139 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-07 08:10:55,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:55,184 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2021-11-07 08:10:55,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:10:55,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) Word has length 29 [2021-11-07 08:10:55,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:55,186 INFO L225 Difference]: With dead ends: 139 [2021-11-07 08:10:55,186 INFO L226 Difference]: Without dead ends: 102 [2021-11-07 08:10:55,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:55,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-07 08:10:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 75. [2021-11-07 08:10:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.273972602739726) internal successors, (93), 74 states have internal predecessors, (93), 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) [2021-11-07 08:10:55,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 93 transitions. [2021-11-07 08:10:55,194 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 93 transitions. Word has length 29 [2021-11-07 08:10:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:55,195 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 93 transitions. [2021-11-07 08:10:55,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-07 08:10:55,195 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 93 transitions. [2021-11-07 08:10:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 08:10:55,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:10:55,197 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:10:55,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 08:10:55,197 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 08:10:55,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:10:55,198 INFO L85 PathProgramCache]: Analyzing trace with hash 811776259, now seen corresponding path program 1 times [2021-11-07 08:10:55,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:10:55,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023945460] [2021-11-07 08:10:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:10:55,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:10:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:10:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 08:10:55,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:10:55,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023945460] [2021-11-07 08:10:55,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023945460] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:10:55,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:10:55,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:10:55,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374717689] [2021-11-07 08:10:55,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:10:55,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:10:55,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:10:55,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:10:55,338 INFO L87 Difference]: Start difference. First operand 75 states and 93 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-07 08:10:55,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:10:55,358 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-11-07 08:10:55,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:10:55,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) Word has length 29 [2021-11-07 08:10:55,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:10:55,359 INFO L225 Difference]: With dead ends: 84 [2021-11-07 08:10:55,359 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 08:10:55,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:10:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 08:10:55,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 08:10:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-07 08:10:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 08:10:55,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-11-07 08:10:55,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:10:55,361 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 08:10:55,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-07 08:10:55,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 08:10:55,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 08:10:55,365 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:10:55,365 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:10:55,366 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:10:55,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:10:55,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 08:10:55,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 08:10:55,612 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,612 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2021-11-07 08:10:55,612 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2021-11-07 08:10:55,612 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 08:10:55,613 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 08:10:55,613 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2021-11-07 08:10:55,613 INFO L853 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,614 INFO L857 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2021-11-07 08:10:55,614 INFO L857 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2021-11-07 08:10:55,614 INFO L853 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2021-11-07 08:10:55,614 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,614 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,616 INFO L857 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,616 INFO L857 garLoopResultBuilder]: For program point L13-4(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,619 INFO L857 garLoopResultBuilder]: For program point L13-5(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,619 INFO L857 garLoopResultBuilder]: For program point L13-7(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,619 INFO L857 garLoopResultBuilder]: For program point L13-8(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,620 INFO L857 garLoopResultBuilder]: For program point L13-9(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,620 INFO L857 garLoopResultBuilder]: For program point L13-11(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,620 INFO L857 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2021-11-07 08:10:55,620 INFO L857 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2021-11-07 08:10:55,620 INFO L853 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,621 INFO L853 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,621 INFO L857 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2021-11-07 08:10:55,621 INFO L857 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2021-11-07 08:10:55,621 INFO L853 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,622 INFO L857 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2021-11-07 08:10:55,622 INFO L857 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-11-07 08:10:55,622 INFO L853 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,622 INFO L857 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-11-07 08:10:55,622 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-07 08:10:55,623 INFO L857 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2021-11-07 08:10:55,623 INFO L853 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2021-11-07 08:10:55,623 INFO L857 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2021-11-07 08:10:55,623 INFO L853 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2021-11-07 08:10:55,624 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 08:10:55,624 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,624 INFO L860 garLoopResultBuilder]: At program point L66(lines 27 67) the Hoare annotation is: true [2021-11-07 08:10:55,624 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 08:10:55,624 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2021-11-07 08:10:55,625 INFO L853 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= ULTIMATE.start_main_~n~0 0) [2021-11-07 08:10:55,625 INFO L857 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2021-11-07 08:10:55,625 INFO L853 garLoopResultBuilder]: At program point L25(lines 20 26) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) (= |ULTIMATE.start_elem_exists_#res| 0) (= ULTIMATE.start_main_~n~0 0)) [2021-11-07 08:10:55,626 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-07 08:10:55,626 INFO L853 garLoopResultBuilder]: At program point L18(lines 16 19) the Hoare annotation is: false [2021-11-07 08:10:55,626 INFO L857 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2021-11-07 08:10:55,626 INFO L853 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~x~0 0)) (.cse1 (= ULTIMATE.start_main_~n~0 0))) (or (and .cse0 (= ULTIMATE.start_elem_exists_~i~0 0) (= ULTIMATE.start_elem_exists_~size 0) .cse1) (and .cse0 (= ULTIMATE.start_main_~v~0 0) .cse1))) [2021-11-07 08:10:55,626 INFO L857 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2021-11-07 08:10:55,631 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2021-11-07 08:10:55,633 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:10:55,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:10:55 BoogieIcfgContainer [2021-11-07 08:10:55,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:10:55,654 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:10:55,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:10:55,655 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:10:55,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:10:52" (3/4) ... [2021-11-07 08:10:55,659 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 08:10:55,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-07 08:10:55,675 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-07 08:10:55,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:10:55,676 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 08:10:55,708 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((x == 0 && i == 0) && size == 0) && \result == 0) && n == 0 [2021-11-07 08:10:55,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:10:55,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:10:55,744 INFO L168 Benchmark]: Toolchain (without parser) took 4633.12 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 60.3 MB in the beginning and 80.5 MB in the end (delta: -20.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:10:55,745 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:10:55,746 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.50 ms. Allocated memory is still 94.4 MB. Free memory was 60.0 MB in the beginning and 70.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:10:55,746 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:10:55,747 INFO L168 Benchmark]: Boogie Preprocessor took 39.97 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 66.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:10:55,747 INFO L168 Benchmark]: RCFGBuilder took 621.28 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 53.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:10:55,748 INFO L168 Benchmark]: TraceAbstraction took 3467.43 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 84.7 MB in the end (delta: -31.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:10:55,748 INFO L168 Benchmark]: Witness Printer took 88.00 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 80.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 08:10:55,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 94.4 MB. Free memory was 66.8 MB in the beginning and 66.8 MB in the end (delta: 28.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.50 ms. Allocated memory is still 94.4 MB. Free memory was 60.0 MB in the beginning and 70.0 MB in the end (delta: -10.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.81 ms. Allocated memory is still 94.4 MB. Free memory was 70.0 MB in the beginning and 67.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.97 ms. Allocated memory is still 94.4 MB. Free memory was 67.9 MB in the beginning and 66.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 621.28 ms. Allocated memory is still 94.4 MB. Free memory was 66.6 MB in the beginning and 53.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3467.43 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 52.8 MB in the beginning and 84.7 MB in the end (delta: -31.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * Witness Printer took 88.00 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 80.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 842 SDslu, 438 SDs, 0 SdLazy, 211 SolverSat, 117 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 365 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 29 NumberOfFragments, 95 HoareAnnotationTreeSize, 13 FomulaSimplifications, 439 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 162 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 39/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((x == 0 && i == 0) && size == 0) && n == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((x == 0 && i == 0) && size == 0) && n == 0) || ((x == 0 && v == 0) && n == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((x == 0 && i == 0) && size == 0) && \result == 0) && n == 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: x == 0 && n == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((x == 0 && i == 0) && size == 0) && n == 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: n == 0 - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-07 08:10:55,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9738ea71-024f-4a7f-982f-eef92ec89c6f/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE