./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.2-dev-e19ca92 [2021-12-22 07:57:39,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 07:57:39,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 07:57:39,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 07:57:39,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 07:57:39,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 07:57:39,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 07:57:39,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 07:57:39,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 07:57:39,590 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 07:57:39,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 07:57:39,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 07:57:39,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 07:57:39,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 07:57:39,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 07:57:39,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 07:57:39,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 07:57:39,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 07:57:39,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 07:57:39,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 07:57:39,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 07:57:39,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 07:57:39,621 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 07:57:39,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 07:57:39,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 07:57:39,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 07:57:39,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 07:57:39,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 07:57:39,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 07:57:39,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 07:57:39,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 07:57:39,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 07:57:39,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 07:57:39,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 07:57:39,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 07:57:39,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 07:57:39,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 07:57:39,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 07:57:39,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 07:57:39,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 07:57:39,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 07:57:39,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 07:57:39,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 07:57:39,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 07:57:39,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 07:57:39,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 07:57:39,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 07:57:39,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 07:57:39,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 07:57:39,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 07:57:39,658 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 07:57:39,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 07:57:39,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 07:57:39,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 07:57:39,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 07:57:39,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 07:57:39,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 07:57:39,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 07:57:39,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 07:57:39,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 07:57:39,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 07:57:39,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 07:57:39,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 07:57:39,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 07:57:39,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 07:57:39,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 07:57:39,671 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0286582125bb2879636b8cf3b934bed172850a3a3b0d880c07306d10439134a7 [2021-12-22 07:57:39,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 07:57:39,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 07:57:39,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 07:57:39,949 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 07:57:39,949 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 07:57:39,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-12-22 07:57:40,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d98505b/618d9026f23a4eb7a914f9f2507e440c/FLAGf642892ec [2021-12-22 07:57:40,347 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 07:57:40,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i [2021-12-22 07:57:40,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d98505b/618d9026f23a4eb7a914f9f2507e440c/FLAGf642892ec [2021-12-22 07:57:40,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d98505b/618d9026f23a4eb7a914f9f2507e440c [2021-12-22 07:57:40,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 07:57:40,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 07:57:40,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 07:57:40,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 07:57:40,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 07:57:40,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:40,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f58d4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40, skipping insertion in model container [2021-12-22 07:57:40,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:40,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 07:57:40,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 07:57:40,917 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-12-22 07:57:40,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 07:57:40,942 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 07:57:40,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/data_structures_set_multi_proc_trivial_ground.i[838,851] [2021-12-22 07:57:40,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 07:57:40,976 INFO L208 MainTranslator]: Completed translation [2021-12-22 07:57:40,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40 WrapperNode [2021-12-22 07:57:40,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 07:57:40,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 07:57:40,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 07:57:40,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 07:57:40,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:40,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,011 INFO L137 Inliner]: procedures = 18, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 158 [2021-12-22 07:57:41,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 07:57:41,012 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 07:57:41,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 07:57:41,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 07:57:41,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 07:57:41,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 07:57:41,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 07:57:41,067 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 07:57:41,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (1/1) ... [2021-12-22 07:57:41,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 07:57:41,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 07:57:41,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 07:57:41,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 07:57:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 07:57:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 07:57:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 07:57:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 07:57:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 07:57:41,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 07:57:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 07:57:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 07:57:41,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 07:57:41,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 07:57:41,208 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 07:57:41,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 07:57:41,446 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 07:57:41,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 07:57:41,452 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-22 07:57:41,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:57:41 BoogieIcfgContainer [2021-12-22 07:57:41,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 07:57:41,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 07:57:41,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 07:57:41,458 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 07:57:41,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:57:40" (1/3) ... [2021-12-22 07:57:41,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d607c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:57:41, skipping insertion in model container [2021-12-22 07:57:41,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:57:40" (2/3) ... [2021-12-22 07:57:41,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d607c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:57:41, skipping insertion in model container [2021-12-22 07:57:41,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:57:41" (3/3) ... [2021-12-22 07:57:41,461 INFO L111 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2021-12-22 07:57:41,466 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 07:57:41,466 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 07:57:41,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 07:57:41,505 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 [2021-12-22 07:57:41,505 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 07:57:41,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 07:57:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-22 07:57:41,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:41,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:41,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:41,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:41,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1977750346, now seen corresponding path program 1 times [2021-12-22 07:57:41,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912238759] [2021-12-22 07:57:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:41,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 07:57:41,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:41,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912238759] [2021-12-22 07:57:41,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912238759] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 07:57:41,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 07:57:41,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 07:57:41,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333039136] [2021-12-22 07:57:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 07:57:41,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 07:57:41,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 07:57:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 07:57:41,683 INFO L87 Difference]: Start difference. First operand has 48 states, 42 states have (on average 1.5714285714285714) internal successors, (66), 43 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:41,786 INFO L93 Difference]: Finished difference Result 131 states and 207 transitions. [2021-12-22 07:57:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 07:57:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-22 07:57:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:41,798 INFO L225 Difference]: With dead ends: 131 [2021-12-22 07:57:41,798 INFO L226 Difference]: Without dead ends: 79 [2021-12-22 07:57:41,802 INFO L932 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 [2021-12-22 07:57:41,806 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:41,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 92 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 07:57:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-22 07:57:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 45. [2021-12-22 07:57:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 07:57:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-12-22 07:57:41,857 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 10 [2021-12-22 07:57:41,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:41,857 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-12-22 07:57:41,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-12-22 07:57:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 07:57:41,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:41,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:41,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 07:57:41,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:41,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1322552780, now seen corresponding path program 1 times [2021-12-22 07:57:41,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:41,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567451835] [2021-12-22 07:57:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:41,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 07:57:41,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:41,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567451835] [2021-12-22 07:57:41,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567451835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 07:57:41,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465090738] [2021-12-22 07:57:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:41,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 07:57:41,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 07:57:41,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 07:57:41,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 07:57:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:42,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 07:57:42,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 07:57:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 07:57:42,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 07:57:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 07:57:42,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465090738] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 07:57:42,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 07:57:42,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 07:57:42,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280625002] [2021-12-22 07:57:42,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 07:57:42,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 07:57:42,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 07:57:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 07:57:42,164 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:42,353 INFO L93 Difference]: Finished difference Result 223 states and 303 transitions. [2021-12-22 07:57:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 07:57:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 07:57:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:42,358 INFO L225 Difference]: With dead ends: 223 [2021-12-22 07:57:42,358 INFO L226 Difference]: Without dead ends: 183 [2021-12-22 07:57:42,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-22 07:57:42,360 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 144 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:42,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 263 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 07:57:42,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-22 07:57:42,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 51. [2021-12-22 07:57:42,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 07:57:42,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2021-12-22 07:57:42,372 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 12 [2021-12-22 07:57:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:42,372 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2021-12-22 07:57:42,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,372 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2021-12-22 07:57:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 07:57:42,373 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:42,373 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:42,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 07:57:42,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 07:57:42,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:42,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -201790894, now seen corresponding path program 2 times [2021-12-22 07:57:42,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:42,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283645489] [2021-12-22 07:57:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:42,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 07:57:42,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283645489] [2021-12-22 07:57:42,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283645489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 07:57:42,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 07:57:42,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 07:57:42,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737859533] [2021-12-22 07:57:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 07:57:42,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 07:57:42,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 07:57:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 07:57:42,683 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:42,718 INFO L93 Difference]: Finished difference Result 98 states and 126 transitions. [2021-12-22 07:57:42,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 07:57:42,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-22 07:57:42,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:42,719 INFO L225 Difference]: With dead ends: 98 [2021-12-22 07:57:42,719 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 07:57:42,720 INFO L932 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 [2021-12-22 07:57:42,721 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:42,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 95 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 07:57:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 07:57:42,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-12-22 07:57:42,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.25) internal successors, (65), 52 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 07:57:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2021-12-22 07:57:42,728 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 18 [2021-12-22 07:57:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:42,728 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2021-12-22 07:57:42,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,728 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2021-12-22 07:57:42,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 07:57:42,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:42,729 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:42,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 07:57:42,730 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:42,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:42,730 INFO L85 PathProgramCache]: Analyzing trace with hash 8512802, now seen corresponding path program 1 times [2021-12-22 07:57:42,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:42,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849277296] [2021-12-22 07:57:42,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:42,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 07:57:42,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849277296] [2021-12-22 07:57:42,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849277296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 07:57:42,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 07:57:42,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 07:57:42,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390911833] [2021-12-22 07:57:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 07:57:42,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 07:57:42,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 07:57:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 07:57:42,777 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:42,794 INFO L93 Difference]: Finished difference Result 117 states and 148 transitions. [2021-12-22 07:57:42,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 07:57:42,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-22 07:57:42,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:42,795 INFO L225 Difference]: With dead ends: 117 [2021-12-22 07:57:42,796 INFO L226 Difference]: Without dead ends: 77 [2021-12-22 07:57:42,796 INFO L932 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 [2021-12-22 07:57:42,797 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 20 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:42,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 07:57:42,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-12-22 07:57:42,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 57. [2021-12-22 07:57:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 53 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 07:57:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-12-22 07:57:42,804 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 29 [2021-12-22 07:57:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:42,805 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-12-22 07:57:42,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-12-22 07:57:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 07:57:42,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:42,806 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:42,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 07:57:42,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 383662240, now seen corresponding path program 1 times [2021-12-22 07:57:42,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:42,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930509948] [2021-12-22 07:57:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:42,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-22 07:57:42,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930509948] [2021-12-22 07:57:42,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930509948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 07:57:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960204825] [2021-12-22 07:57:42,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:42,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 07:57:42,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 07:57:42,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 07:57:42,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 07:57:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 07:57:43,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 07:57:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 07:57:43,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 07:57:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 07:57:43,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960204825] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 07:57:43,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 07:57:43,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-12-22 07:57:43,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771521647] [2021-12-22 07:57:43,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 07:57:43,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 07:57:43,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 07:57:43,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-22 07:57:43,174 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:43,793 INFO L93 Difference]: Finished difference Result 623 states and 861 transitions. [2021-12-22 07:57:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-22 07:57:43,795 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-22 07:57:43,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:43,798 INFO L225 Difference]: With dead ends: 623 [2021-12-22 07:57:43,798 INFO L226 Difference]: Without dead ends: 577 [2021-12-22 07:57:43,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=396, Invalid=726, Unknown=0, NotChecked=0, Total=1122 [2021-12-22 07:57:43,804 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 1127 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:43,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 428 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 07:57:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-12-22 07:57:43,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 88. [2021-12-22 07:57:43,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.216867469879518) internal successors, (101), 83 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 07:57:43,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2021-12-22 07:57:43,846 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 31 [2021-12-22 07:57:43,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:43,846 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2021-12-22 07:57:43,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:43,847 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2021-12-22 07:57:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 07:57:43,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:43,848 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:43,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 07:57:44,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 07:57:44,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:44,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:44,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1437829230, now seen corresponding path program 2 times [2021-12-22 07:57:44,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:44,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057586197] [2021-12-22 07:57:44,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:44,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 07:57:44,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:44,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057586197] [2021-12-22 07:57:44,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057586197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 07:57:44,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 07:57:44,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 07:57:44,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300181867] [2021-12-22 07:57:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 07:57:44,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 07:57:44,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 07:57:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 07:57:44,163 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:44,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:44,185 INFO L93 Difference]: Finished difference Result 153 states and 192 transitions. [2021-12-22 07:57:44,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 07:57:44,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 07:57:44,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:44,186 INFO L225 Difference]: With dead ends: 153 [2021-12-22 07:57:44,187 INFO L226 Difference]: Without dead ends: 114 [2021-12-22 07:57:44,187 INFO L932 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 [2021-12-22 07:57:44,190 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 18 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:44,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 177 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 07:57:44,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-22 07:57:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 91. [2021-12-22 07:57:44,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 86 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-22 07:57:44,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2021-12-22 07:57:44,199 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 45 [2021-12-22 07:57:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:44,199 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2021-12-22 07:57:44,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2021-12-22 07:57:44,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 07:57:44,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 07:57:44,201 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 07:57:44,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 07:57:44,201 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 07:57:44,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 07:57:44,202 INFO L85 PathProgramCache]: Analyzing trace with hash 311045192, now seen corresponding path program 1 times [2021-12-22 07:57:44,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 07:57:44,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449351493] [2021-12-22 07:57:44,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 07:57:44,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 07:57:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 07:57:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 07:57:44,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 07:57:44,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449351493] [2021-12-22 07:57:44,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449351493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 07:57:44,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 07:57:44,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 07:57:44,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974835454] [2021-12-22 07:57:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 07:57:44,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 07:57:44,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 07:57:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 07:57:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 07:57:44,280 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:44,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 07:57:44,297 INFO L93 Difference]: Finished difference Result 100 states and 121 transitions. [2021-12-22 07:57:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 07:57:44,297 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-22 07:57:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 07:57:44,299 INFO L225 Difference]: With dead ends: 100 [2021-12-22 07:57:44,299 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 07:57:44,300 INFO L932 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 [2021-12-22 07:57:44,301 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 07:57:44,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 07:57:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 07:57:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 07:57:44,302 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) [2021-12-22 07:57:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 07:57:44,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-12-22 07:57:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 07:57:44,303 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 07:57:44,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 07:57:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 07:57:44,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 07:57:44,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 07:57:44,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 07:57:44,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 07:57:44,478 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 54) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 54) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point L61-2(lines 61 65) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L854 garLoopResultBuilder]: At program point L61-3(lines 61 65) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point L61-4(lines 61 65) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L858 garLoopResultBuilder]: For program point L62-2(lines 62 64) no Hoare annotation was computed. [2021-12-22 07:57:44,479 INFO L854 garLoopResultBuilder]: At program point L62-3(lines 62 64) the Hoare annotation is: false [2021-12-22 07:57:44,480 INFO L854 garLoopResultBuilder]: At program point L63(line 63) the Hoare annotation is: false [2021-12-22 07:57:44,480 INFO L858 garLoopResultBuilder]: For program point L63-1(line 63) no Hoare annotation was computed. [2021-12-22 07:57:44,480 INFO L858 garLoopResultBuilder]: For program point L55-2(lines 55 59) no Hoare annotation was computed. [2021-12-22 07:57:44,480 INFO L858 garLoopResultBuilder]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2021-12-22 07:57:44,480 INFO L854 garLoopResultBuilder]: At program point L55-3(lines 55 59) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,480 INFO L854 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,480 INFO L858 garLoopResultBuilder]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L47-2(lines 47 50) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L854 garLoopResultBuilder]: At program point L47-3(lines 47 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L47-4(lines 47 50) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L854 garLoopResultBuilder]: At program point L39-3(lines 39 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L56-2(lines 56 58) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L854 garLoopResultBuilder]: At program point L56-3(lines 56 58) the Hoare annotation is: false [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2021-12-22 07:57:44,481 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 07:57:44,481 INFO L854 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: false [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point L57-1(line 57) no Hoare annotation was computed. [2021-12-22 07:57:44,482 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: false [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2021-12-22 07:57:44,482 INFO L861 garLoopResultBuilder]: At program point L66(lines 27 67) the Hoare annotation is: true [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point L33-2(lines 33 36) no Hoare annotation was computed. [2021-12-22 07:57:44,482 INFO L854 garLoopResultBuilder]: At program point L33-3(lines 33 36) the Hoare annotation is: (= |ULTIMATE.start_main_~n~0#1| 0) [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point L33-4(lines 33 36) no Hoare annotation was computed. [2021-12-22 07:57:44,482 INFO L854 garLoopResultBuilder]: At program point L25(lines 20 26) the Hoare annotation is: (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) (= 0 |ULTIMATE.start_elem_exists_#res#1|) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) [2021-12-22 07:57:44,482 INFO L854 garLoopResultBuilder]: At program point L18(lines 16 19) the Hoare annotation is: false [2021-12-22 07:57:44,482 INFO L858 garLoopResultBuilder]: For program point L51-2(lines 51 60) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L854 garLoopResultBuilder]: At program point L51-3(lines 51 60) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~n~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| 0))) (or (and (= |ULTIMATE.start_elem_exists_~size#1| 0) (= |ULTIMATE.start_elem_exists_~i~0#1| 0) .cse0 .cse1) (and .cse0 (= |ULTIMATE.start_main_~v~0#1| 0) .cse1))) [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point L51-4(lines 51 60) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point L13-3(line 13) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2021-12-22 07:57:44,483 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-22 07:57:44,487 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2021-12-22 07:57:44,488 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 07:57:44,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:57:44 BoogieIcfgContainer [2021-12-22 07:57:44,502 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 07:57:44,503 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 07:57:44,503 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 07:57:44,503 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 07:57:44,503 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:57:41" (3/4) ... [2021-12-22 07:57:44,506 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 07:57:44,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-22 07:57:44,516 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-12-22 07:57:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-12-22 07:57:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 07:57:44,518 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 07:57:44,538 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 [2021-12-22 07:57:44,553 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 07:57:44,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 07:57:44,559 INFO L158 Benchmark]: Toolchain (without parser) took 3775.59ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 46.8MB in the beginning and 65.4MB in the end (delta: -18.6MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,559 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 07:57:44,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 190.07ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 36.2MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.22ms. Allocated memory is still 86.0MB. Free memory was 36.2MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,560 INFO L158 Benchmark]: Boogie Preprocessor took 54.29ms. Allocated memory is still 86.0MB. Free memory was 34.1MB in the beginning and 65.4MB in the end (delta: -31.3MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,560 INFO L158 Benchmark]: RCFGBuilder took 386.42ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 58.2MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,560 INFO L158 Benchmark]: TraceAbstraction took 3047.36ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 57.5MB in the beginning and 69.6MB in the end (delta: -12.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,561 INFO L158 Benchmark]: Witness Printer took 55.62ms. Allocated memory is still 113.2MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 07:57:44,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory is still 63.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 190.07ms. Allocated memory is still 86.0MB. Free memory was 46.8MB in the beginning and 36.2MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.22ms. Allocated memory is still 86.0MB. Free memory was 36.2MB in the beginning and 34.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.29ms. Allocated memory is still 86.0MB. Free memory was 34.1MB in the beginning and 65.4MB in the end (delta: -31.3MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 386.42ms. Allocated memory is still 86.0MB. Free memory was 65.4MB in the beginning and 58.2MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3047.36ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 57.5MB in the beginning and 69.6MB in the end (delta: -12.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 55.62ms. Allocated memory is still 113.2MB. Free memory was 69.6MB in the beginning and 65.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1425 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1385 mSDsluCounter, 1167 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 799 mSDsCounter, 355 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 355 mSolverCounterUnsat, 368 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=6, InterpolantAutomatonStates: 58, 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, 699 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 35 PreInvPairs, 58 NumberOfFragments, 99 HoareAnnotationTreeSize, 35 FomulaSimplifications, 92 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 438 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 265 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 258/294 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: n == 0 && x == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 0 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && n == 0) && x == 0) || ((n == 0 && v == 0) && x == 0) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((size == 0 && i == 0) && 0 == \result) && n == 0) && x == 0 - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: n == 0 && x == 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: n == 0 && x == 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((size == 0 && i == 0) && n == 0) && x == 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! [2021-12-22 07:57:44,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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