./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/sumt4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/loops-crafted-1/sumt4.c -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 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:24:14,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:24:14,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:24:14,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:24:14,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:24:14,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:24:14,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:24:14,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:24:14,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:24:14,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:24:14,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:24:14,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:24:14,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:24:14,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:24:14,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:24:14,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:24:14,120 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:24:14,121 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:24:14,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:24:14,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:24:14,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:24:14,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:24:14,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:24:14,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:24:14,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:24:14,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:24:14,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:24:14,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:24:14,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:24:14,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:24:14,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:24:14,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:24:14,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:24:14,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:24:14,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:24:14,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:24:14,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:24:14,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:24:14,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:24:14,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:24:14,147 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:24:14,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:24:14,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:24:14,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:24:14,188 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:24:14,188 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:24:14,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:24:14,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:24:14,191 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:24:14,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:24:14,191 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:24:14,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:24:14,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:24:14,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:24:14,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:24:14,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:24:14,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:24:14,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:24:14,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:24:14,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:24:14,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:24:14,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:24:14,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:24:14,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:24:14,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:24:14,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:24:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:24:14,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:24:14,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:24:14,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:24:14,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:24:14,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:24:14,197 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:24:14,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:24:14,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:24:14,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:24:14,198 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8015f40beddbd48a6a69d0e81aa81c24a23cce70998d728277f4562b5eb207d5 [2021-12-21 12:24:14,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:24:14,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:24:14,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:24:14,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:24:14,431 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:24:14,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sumt4.c [2021-12-21 12:24:14,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdadf050/2f9a326d77b14707a2e1e31607866422/FLAG026a360e0 [2021-12-21 12:24:14,858 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:24:14,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sumt4.c [2021-12-21 12:24:14,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdadf050/2f9a326d77b14707a2e1e31607866422/FLAG026a360e0 [2021-12-21 12:24:14,872 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cdadf050/2f9a326d77b14707a2e1e31607866422 [2021-12-21 12:24:14,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:24:14,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:24:14,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:24:14,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:24:14,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:24:14,880 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:24:14" (1/1) ... [2021-12-21 12:24:14,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@613b5b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:14, skipping insertion in model container [2021-12-21 12:24:14,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:24:14" (1/1) ... [2021-12-21 12:24:14,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:24:14,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:24:15,043 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/loops-crafted-1/sumt4.c[403,416] [2021-12-21 12:24:15,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:24:15,060 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:24:15,070 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/loops-crafted-1/sumt4.c[403,416] [2021-12-21 12:24:15,075 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:24:15,085 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:24:15,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15 WrapperNode [2021-12-21 12:24:15,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:24:15,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:24:15,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:24:15,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:24:15,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,112 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-21 12:24:15,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:24:15,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:24:15,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:24:15,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:24:15,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:24:15,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:24:15,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:24:15,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:24:15,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (1/1) ... [2021-12-21 12:24:15,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:24:15,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:24:15,156 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) [2021-12-21 12:24:15,181 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 [2021-12-21 12:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:24:15,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:24:15,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:24:15,242 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:24:15,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:24:17,506 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:24:17,511 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:24:17,511 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:24:17,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:24:17 BoogieIcfgContainer [2021-12-21 12:24:17,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:24:17,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:24:17,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:24:17,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:24:17,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:24:14" (1/3) ... [2021-12-21 12:24:17,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f741954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:24:17, skipping insertion in model container [2021-12-21 12:24:17,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:24:15" (2/3) ... [2021-12-21 12:24:17,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f741954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:24:17, skipping insertion in model container [2021-12-21 12:24:17,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:24:17" (3/3) ... [2021-12-21 12:24:17,542 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt4.c [2021-12-21 12:24:17,547 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:24:17,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:24:17,634 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:24:17,639 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 [2021-12-21 12:24:17,640 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:24:17,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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) [2021-12-21 12:24:17,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 12:24:17,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:17,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:17,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1807612808, now seen corresponding path program 1 times [2021-12-21 12:24:17,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:17,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505889786] [2021-12-21 12:24:17,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:17,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:17,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:17,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505889786] [2021-12-21 12:24:17,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505889786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:24:17,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:24:17,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:24:17,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98306486] [2021-12-21 12:24:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:17,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:24:17,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:17,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:24:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:24:17,806 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-21 12:24:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:17,819 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-12-21 12:24:17,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:24:17,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-21 12:24:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:17,828 INFO L225 Difference]: With dead ends: 24 [2021-12-21 12:24:17,828 INFO L226 Difference]: Without dead ends: 12 [2021-12-21 12:24:17,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:24:17,836 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:17,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:24:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-21 12:24:17,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-21 12:24:17,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-12-21 12:24:17,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2021-12-21 12:24:17,869 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2021-12-21 12:24:17,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:17,869 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2021-12-21 12:24:17,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-12-21 12:24:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2021-12-21 12:24:17,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 12:24:17,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:17,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:17,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:24:17,872 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1806987197, now seen corresponding path program 1 times [2021-12-21 12:24:17,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:17,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087551950] [2021-12-21 12:24:17,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:17,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:18,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:18,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:18,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087551950] [2021-12-21 12:24:18,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087551950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:24:18,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:24:18,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 12:24:18,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473255879] [2021-12-21 12:24:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:18,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 12:24:18,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 12:24:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 12:24:18,123 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 12:24:20,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:20,366 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2021-12-21 12:24:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 12:24:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-21 12:24:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:20,367 INFO L225 Difference]: With dead ends: 25 [2021-12-21 12:24:20,367 INFO L226 Difference]: Without dead ends: 14 [2021-12-21 12:24:20,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 12:24:20,368 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:20,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 12:24:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-21 12:24:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-21 12:24:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-12-21 12:24:20,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-12-21 12:24:20,372 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 7 [2021-12-21 12:24:20,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:20,373 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-12-21 12:24:20,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-12-21 12:24:20,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-12-21 12:24:20,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 12:24:20,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:20,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:20,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:24:20,374 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:20,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 87918451, now seen corresponding path program 1 times [2021-12-21 12:24:20,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:20,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041042746] [2021-12-21 12:24:20,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:20,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:20,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:20,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:20,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041042746] [2021-12-21 12:24:20,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041042746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:20,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025629705] [2021-12-21 12:24:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:20,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:20,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:24:20,918 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) [2021-12-21 12:24:20,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:24:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 12:24:20,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:24:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:21,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:24:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 12:24:21,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025629705] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:21,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:24:21,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 6] total 13 [2021-12-21 12:24:21,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978252391] [2021-12-21 12:24:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:21,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:24:21,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:24:21,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:24:21,368 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:23,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:25,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:25,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:25,724 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-12-21 12:24:25,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:24:25,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-21 12:24:25,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:25,725 INFO L225 Difference]: With dead ends: 22 [2021-12-21 12:24:25,725 INFO L226 Difference]: Without dead ends: 18 [2021-12-21 12:24:25,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:24:25,726 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:25,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-12-21 12:24:25,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-21 12:24:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-12-21 12:24:25,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-12-21 12:24:25,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2021-12-21 12:24:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:25,731 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-12-21 12:24:25,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:25,731 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-12-21 12:24:25,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 12:24:25,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:25,732 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:25,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:24:25,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:25,936 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:25,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:25,936 INFO L85 PathProgramCache]: Analyzing trace with hash -116405439, now seen corresponding path program 1 times [2021-12-21 12:24:25,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:25,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456012343] [2021-12-21 12:24:25,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:25,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:26,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456012343] [2021-12-21 12:24:26,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456012343] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297529693] [2021-12-21 12:24:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:26,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:24:26,160 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) [2021-12-21 12:24:26,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:24:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:26,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 12:24:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:24:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:26,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:24:26,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:24:26,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297529693] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:26,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:24:26,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 8] total 15 [2021-12-21 12:24:26,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418125506] [2021-12-21 12:24:26,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:26,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:24:26,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:26,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:24:26,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:24:26,782 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-21 12:24:28,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:29,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:29,016 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-12-21 12:24:29,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:24:29,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-21 12:24:29,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:29,017 INFO L225 Difference]: With dead ends: 25 [2021-12-21 12:24:29,018 INFO L226 Difference]: Without dead ends: 21 [2021-12-21 12:24:29,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-12-21 12:24:29,019 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:29,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 12:24:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-21 12:24:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-12-21 12:24:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:29,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2021-12-21 12:24:29,022 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 14 [2021-12-21 12:24:29,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:29,022 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2021-12-21 12:24:29,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-12-21 12:24:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2021-12-21 12:24:29,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 12:24:29,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:29,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:29,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:24:29,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 12:24:29,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:29,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:29,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1931219048, now seen corresponding path program 1 times [2021-12-21 12:24:29,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:29,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221920851] [2021-12-21 12:24:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:29,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:29,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:29,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221920851] [2021-12-21 12:24:29,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221920851] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890450863] [2021-12-21 12:24:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:29,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:29,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:24:29,310 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:24:29,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:24:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:29,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 12:24:29,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:24:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:29,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:24:29,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 12:24:29,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890450863] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:29,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:24:29,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 12 [2021-12-21 12:24:29,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914185943] [2021-12-21 12:24:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:29,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:24:29,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:24:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:24:29,782 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:31,804 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:33,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:36,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:36,265 INFO L93 Difference]: Finished difference Result 31 states and 41 transitions. [2021-12-21 12:24:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:24:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-21 12:24:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:36,266 INFO L225 Difference]: With dead ends: 31 [2021-12-21 12:24:36,266 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 12:24:36,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:24:36,267 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:36,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 6.5s Time] [2021-12-21 12:24:36,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 12:24:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-21 12:24:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-12-21 12:24:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-12-21 12:24:36,270 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 15 [2021-12-21 12:24:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:36,270 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-12-21 12:24:36,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:24:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-12-21 12:24:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 12:24:36,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:24:36,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:24:36,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 12:24:36,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:36,476 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:24:36,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:24:36,476 INFO L85 PathProgramCache]: Analyzing trace with hash -527836022, now seen corresponding path program 1 times [2021-12-21 12:24:36,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:24:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460385063] [2021-12-21 12:24:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:36,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:24:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:24:36,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:24:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460385063] [2021-12-21 12:24:36,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460385063] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:36,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394855059] [2021-12-21 12:24:36,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:24:36,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:36,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:24:36,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:24:36,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:24:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:24:36,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-21 12:24:36,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:24:37,018 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:24:37,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:24:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:24:37,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394855059] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-21 12:24:37,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:24:37,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 10] total 14 [2021-12-21 12:24:37,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395777341] [2021-12-21 12:24:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:24:37,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 12:24:37,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:24:37,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 12:24:37,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-21 12:24:37,269 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-21 12:24:39,297 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 12:24:39,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:24:39,502 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-12-21 12:24:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 12:24:39,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 12:24:39,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:24:39,502 INFO L225 Difference]: With dead ends: 27 [2021-12-21 12:24:39,502 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 12:24:39,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:24:39,503 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:24:39,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-12-21 12:24:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 12:24:39,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 12:24:39,504 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) [2021-12-21 12:24:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 12:24:39,504 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-12-21 12:24:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:24:39,504 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 12:24:39,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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) [2021-12-21 12:24:39,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 12:24:39,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 12:24:39,507 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:24:39,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:24:39,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:24:39,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L27(lines 27 30) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 30) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L27-2(lines 23 30) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L23(lines 23 30) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 21 32) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~l~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~v4~0#1| |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|) 4294967296)) [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 32) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L858 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-12-21 12:24:39,731 INFO L861 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: true [2021-12-21 12:24:39,731 INFO L861 garLoopResultBuilder]: At program point L34(lines 16 35) the Hoare annotation is: true [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2021-12-21 12:24:39,732 INFO L858 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-12-21 12:24:39,735 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-21 12:24:39,736 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:24:39,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 12:24:39 BoogieIcfgContainer [2021-12-21 12:24:39,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 12:24:39,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 12:24:39,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 12:24:39,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 12:24:39,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:24:17" (3/4) ... [2021-12-21 12:24:39,748 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-21 12:24:39,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-21 12:24:39,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-21 12:24:39,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-21 12:24:39,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-21 12:24:39,774 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-21 12:24:39,774 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 12:24:39,774 INFO L158 Benchmark]: Toolchain (without parser) took 24898.73ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 51.5MB in the beginning and 70.1MB in the end (delta: -18.6MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,775 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:24:39,775 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.41ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 51.3MB in the beginning and 85.1MB in the end (delta: -33.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,775 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.45ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,776 INFO L158 Benchmark]: Boogie Preprocessor took 15.93ms. Allocated memory is still 111.1MB. Free memory was 83.3MB in the beginning and 82.6MB in the end (delta: 753.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:24:39,776 INFO L158 Benchmark]: RCFGBuilder took 2382.98ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 73.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,776 INFO L158 Benchmark]: TraceAbstraction took 22231.14ms. Allocated memory is still 111.1MB. Free memory was 72.4MB in the beginning and 73.1MB in the end (delta: -696.3kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,777 INFO L158 Benchmark]: Witness Printer took 28.77ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 70.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-21 12:24:39,778 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 68.1MB in the beginning and 68.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.41ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 51.3MB in the beginning and 85.1MB in the end (delta: -33.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.45ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.93ms. Allocated memory is still 111.1MB. Free memory was 83.3MB in the beginning and 82.6MB in the end (delta: 753.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2382.98ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 73.1MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22231.14ms. Allocated memory is still 111.1MB. Free memory was 72.4MB in the beginning and 73.1MB in the end (delta: -696.3kB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. * Witness Printer took 28.77ms. Allocated memory is still 111.1MB. Free memory was 73.1MB in the beginning and 70.1MB in the end (delta: 3.0MB). 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: 10]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.1s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 17.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 16.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 53 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 81 SyntacticMatches, 13 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=5, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 13 HoareAnnotationTreeSize, 3 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 1996 SizeOfPredicates, 24 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 41/72 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: l % 4294967296 == (v4 + i + j + k) % 4294967296 RESULT: Ultimate proved your program to be correct! [2021-12-21 12:24:39,817 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