./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/verifythis/lcp.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/verifythis/lcp.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:26:06,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:26:06,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:26:06,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:26:06,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:26:06,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:26:06,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:26:06,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:26:06,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:26:06,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:26:06,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:26:06,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:26:06,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:26:06,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:26:06,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:26:06,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:26:06,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:26:06,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:26:06,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:26:06,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:26:06,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:26:06,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:26:06,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:26:06,175 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:26:06,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:26:06,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:26:06,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:26:06,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:26:06,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:26:06,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:26:06,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:26:06,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:26:06,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:26:06,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:26:06,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:26:06,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:26:06,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:26:06,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:26:06,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:26:06,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:26:06,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:26:06,184 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:26:06,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:26:06,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:26:06,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:26:06,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:26:06,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:26:06,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:26:06,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:26:06,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:26:06,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:26:06,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:26:06,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:26:06,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:26:06,200 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2021-12-21 12:26:06,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:26:06,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:26:06,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:26:06,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:26:06,427 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:26:06,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-12-21 12:26:06,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7bb4a5f/6090bc15b6564a389c2fb4e3074e2753/FLAG158ff4fd5 [2021-12-21 12:26:06,792 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:26:06,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-12-21 12:26:06,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7bb4a5f/6090bc15b6564a389c2fb4e3074e2753/FLAG158ff4fd5 [2021-12-21 12:26:07,238 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da7bb4a5f/6090bc15b6564a389c2fb4e3074e2753 [2021-12-21 12:26:07,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:26:07,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:26:07,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:26:07,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:26:07,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:26:07,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a9a90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07, skipping insertion in model container [2021-12-21 12:26:07,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:26:07,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:26:07,360 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/verifythis/lcp.c[515,528] [2021-12-21 12:26:07,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:26:07,378 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:26:07,389 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/verifythis/lcp.c[515,528] [2021-12-21 12:26:07,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:26:07,404 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:26:07,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07 WrapperNode [2021-12-21 12:26:07,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:26:07,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:26:07,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:26:07,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:26:07,409 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,431 INFO L137 Inliner]: procedures = 20, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2021-12-21 12:26:07,432 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:26:07,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:26:07,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:26:07,432 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:26:07,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,441 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,452 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:26:07,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:26:07,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:26:07,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:26:07,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (1/1) ... [2021-12-21 12:26:07,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:26:07,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:26:07,492 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 12:26:07,498 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 12:26:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:26:07,522 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:26:07,522 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:26:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:26:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 12:26:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:26:07,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:26:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 12:26:07,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:26:07,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:26:07,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:26:07,585 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:26:07,586 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:26:07,754 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:26:07,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:26:07,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:26:07,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:07 BoogieIcfgContainer [2021-12-21 12:26:07,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:26:07,761 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:26:07,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:26:07,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:26:07,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:26:07" (1/3) ... [2021-12-21 12:26:07,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da9eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:07, skipping insertion in model container [2021-12-21 12:26:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:07" (2/3) ... [2021-12-21 12:26:07,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59da9eb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:07, skipping insertion in model container [2021-12-21 12:26:07,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:07" (3/3) ... [2021-12-21 12:26:07,780 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-12-21 12:26:07,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:26:07,783 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:26:07,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:26:07,837 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 12:26:07,838 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:26:07,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 12:26:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 12:26:07,866 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:07,866 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:07,867 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:07,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:07,870 INFO L85 PathProgramCache]: Analyzing trace with hash 867982546, now seen corresponding path program 1 times [2021-12-21 12:26:07,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:07,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882585374] [2021-12-21 12:26:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:07,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 12:26:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:26:07,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:07,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882585374] [2021-12-21 12:26:07,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882585374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:07,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:07,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:26:07,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655033483] [2021-12-21 12:26:07,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:07,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:26:07,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:26:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:26:08,043 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:08,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:08,066 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2021-12-21 12:26:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:26:08,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-21 12:26:08,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:08,080 INFO L225 Difference]: With dead ends: 63 [2021-12-21 12:26:08,080 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 12:26:08,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 12:26:08,086 INFO L933 BasicCegarLoop]: 38 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, 38 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 12:26:08,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:26:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 12:26:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 12:26:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-21 12:26:08,118 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2021-12-21 12:26:08,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:08,118 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-21 12:26:08,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-21 12:26:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 12:26:08,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:08,121 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:08,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:26:08,122 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:08,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:08,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1785702985, now seen corresponding path program 1 times [2021-12-21 12:26:08,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:08,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625978490] [2021-12-21 12:26:08,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:08,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:08,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 12:26:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:26:08,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:08,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625978490] [2021-12-21 12:26:08,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625978490] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:08,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:08,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:26:08,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349859035] [2021-12-21 12:26:08,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:08,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:26:08,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:26:08,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:26:08,337 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 12:26:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:08,454 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2021-12-21 12:26:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:26:08,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-12-21 12:26:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:08,455 INFO L225 Difference]: With dead ends: 58 [2021-12-21 12:26:08,456 INFO L226 Difference]: Without dead ends: 40 [2021-12-21 12:26:08,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:26:08,458 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:08,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 82 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:26:08,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-21 12:26:08,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2021-12-21 12:26:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-21 12:26:08,469 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2021-12-21 12:26:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:08,469 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-21 12:26:08,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 12:26:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-21 12:26:08,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 12:26:08,470 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:08,471 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:08,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:26:08,471 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:08,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash 774585735, now seen corresponding path program 1 times [2021-12-21 12:26:08,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:08,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113185273] [2021-12-21 12:26:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:08,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 12:26:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:26:08,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:08,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113185273] [2021-12-21 12:26:08,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113185273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 12:26:08,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759626814] [2021-12-21 12:26:08,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:08,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:26:08,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:08,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:26:08,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:26:08,602 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 12:26:08,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:08,705 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-12-21 12:26:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:26:08,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2021-12-21 12:26:08,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:08,707 INFO L225 Difference]: With dead ends: 37 [2021-12-21 12:26:08,707 INFO L226 Difference]: Without dead ends: 33 [2021-12-21 12:26:08,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-21 12:26:08,708 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:08,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 118 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:26:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-12-21 12:26:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-12-21 12:26:08,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-21 12:26:08,713 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 30 [2021-12-21 12:26:08,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:08,714 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-21 12:26:08,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-21 12:26:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-21 12:26:08,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-21 12:26:08,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:08,715 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:08,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 12:26:08,715 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:08,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:08,716 INFO L85 PathProgramCache]: Analyzing trace with hash -2142420270, now seen corresponding path program 1 times [2021-12-21 12:26:08,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:08,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250243807] [2021-12-21 12:26:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:08,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 12:26:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 12:26:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:08,868 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:26:08,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:08,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250243807] [2021-12-21 12:26:08,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250243807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:08,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:08,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:26:08,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12357895] [2021-12-21 12:26:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:08,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:26:08,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:26:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:26:08,871 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:26:09,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:09,038 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-12-21 12:26:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:26:09,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2021-12-21 12:26:09,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:09,040 INFO L225 Difference]: With dead ends: 46 [2021-12-21 12:26:09,040 INFO L226 Difference]: Without dead ends: 34 [2021-12-21 12:26:09,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:26:09,041 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:09,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 147 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:26:09,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-21 12:26:09,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-12-21 12:26:09,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:09,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-12-21 12:26:09,046 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 37 [2021-12-21 12:26:09,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:09,046 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-12-21 12:26:09,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:26:09,047 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-12-21 12:26:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 12:26:09,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:09,048 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:09,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 12:26:09,048 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:09,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:09,049 INFO L85 PathProgramCache]: Analyzing trace with hash 874062527, now seen corresponding path program 1 times [2021-12-21 12:26:09,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:09,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850805039] [2021-12-21 12:26:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:09,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 12:26:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:26:09,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:26:09,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:09,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850805039] [2021-12-21 12:26:09,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850805039] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:26:09,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994002106] [2021-12-21 12:26:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:09,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:26:09,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:26:09,136 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 12:26:09,138 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 12:26:09,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:09,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-21 12:26:09,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:09,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-21 12:26:11,265 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1| Int)) (= ((as const (Array Int Int)) 0) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1|))) is different from true [2021-12-21 12:26:11,332 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 54 [2021-12-21 12:26:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 12:26:11,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:26:15,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994002106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:26:15,498 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:26:15,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2021-12-21 12:26:15,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142196402] [2021-12-21 12:26:15,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:26:15,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:26:15,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:26:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=54, Unknown=2, NotChecked=14, Total=90 [2021-12-21 12:26:15,500 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 12:26:15,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:15,552 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2021-12-21 12:26:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 12:26:15,552 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 40 [2021-12-21 12:26:15,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:15,553 INFO L225 Difference]: With dead ends: 59 [2021-12-21 12:26:15,553 INFO L226 Difference]: Without dead ends: 39 [2021-12-21 12:26:15,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=41, Invalid=93, Unknown=2, NotChecked=20, Total=156 [2021-12-21 12:26:15,554 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:15,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 84 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2021-12-21 12:26:15,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-21 12:26:15,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-12-21 12:26:15,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:15,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2021-12-21 12:26:15,559 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 40 [2021-12-21 12:26:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:15,559 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2021-12-21 12:26:15,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-21 12:26:15,559 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2021-12-21 12:26:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-21 12:26:15,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:15,560 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:15,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:26:15,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:26:15,761 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:15,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1296764353, now seen corresponding path program 1 times [2021-12-21 12:26:15,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:26:15,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042294665] [2021-12-21 12:26:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:15,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:26:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 12:26:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 12:26:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 12:26:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 12:26:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:26:15,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:26:15,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042294665] [2021-12-21 12:26:15,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042294665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:26:15,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742962848] [2021-12-21 12:26:15,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:15,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:26:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:26:15,879 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 12:26:15,880 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 12:26:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-21 12:26:15,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:26:16,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:26:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-21 12:26:16,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742962848] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:26:16,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:26:16,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2021-12-21 12:26:16,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118177960] [2021-12-21 12:26:16,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:26:16,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:26:16,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:26:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:26:16,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 12:26:16,331 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:26:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:16,412 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-12-21 12:26:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:26:16,412 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2021-12-21 12:26:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:16,413 INFO L225 Difference]: With dead ends: 40 [2021-12-21 12:26:16,413 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 12:26:16,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-21 12:26:16,414 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 17 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:16,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 124 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:26:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 12:26:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 12:26:16,415 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 12:26:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 12:26:16,415 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-12-21 12:26:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:16,415 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 12:26:16,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 12:26:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 12:26:16,416 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 12:26:16,418 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 12:26:16,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 12:26:16,633 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,SelfDestructingSolverStorable5 [2021-12-21 12:26:16,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 12:26:16,973 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-21 12:26:16,973 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-21 12:26:16,974 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse9 (select |#memory_int| |ULTIMATE.start_check_~a#1.base|)) (.cse10 (* |ULTIMATE.start_check_~i~0#1| 4)) (.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~y#1|)) (.cse1 (= .cse2 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (.cse3 (= (select .cse9 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) .cse10)) 0)) (.cse4 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (= .cse2 (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|))) (.cse6 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse7 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|)))) (.cse8 (= (select .cse9 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| .cse10)) 0))) (or (and (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse0 .cse1 (or (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|))) (= .cse2 (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 (= |ULTIMATE.start_check_~l#1| 0) .cse1 (or (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~y#1|)) .cse3 .cse4 .cse5 .cse6 (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse7 .cse8 (= |ULTIMATE.start_lcp_#res#1| 0))))) [2021-12-21 12:26:16,974 INFO L858 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-12-21 12:26:16,974 INFO L854 garLoopResultBuilder]: At program point L21(lines 16 22) the Hoare annotation is: (let ((.cse6 ((as const (Array Int Int)) 0))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~y#1|)) (.cse1 (= .cse6 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (.cse2 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= .cse6 (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|))) (.cse4 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse5 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|))))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse5 (= |ULTIMATE.start_lcp_#res#1| 0)) (and (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse0 .cse1 (= .cse6 (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|)) .cse2 .cse3 .cse4 .cse5)))) [2021-12-21 12:26:16,974 INFO L861 garLoopResultBuilder]: At program point L48(lines 35 49) the Hoare annotation is: true [2021-12-21 12:26:16,974 INFO L861 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2021-12-21 12:26:16,974 INFO L858 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2021-12-21 12:26:16,974 INFO L854 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: false [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point L-1-1(line -1) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse10 (select |#memory_int| |ULTIMATE.start_check_~a#1.base|)) (.cse11 (* |ULTIMATE.start_check_~i~0#1| 4)) (.cse2 ((as const (Array Int Int)) 0))) (let ((.cse0 (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~y#1|)) (.cse1 (= .cse2 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|))) (.cse3 (= (select .cse10 (+ |ULTIMATE.start_check_~a#1.offset| (* 4 |ULTIMATE.start_check_~x#1|) .cse11)) 0)) (.cse4 (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|)) (.cse5 (= .cse2 (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|))) (.cse6 (= |ULTIMATE.start_check_#t~mem11#1| |ULTIMATE.start_check_#t~mem10#1|)) (.cse7 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|)) (.cse8 (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_lcp_~l~0#1| |ULTIMATE.start_main_~x~0#1|)))) (.cse9 (= (select .cse10 (+ (* 4 |ULTIMATE.start_check_~y#1|) |ULTIMATE.start_check_~a#1.offset| .cse11)) 0))) (or (and (or (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_#res#1|)) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_lcp_#res#1|))) .cse0 .cse1 (or (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~x#1|)) (<= |ULTIMATE.start_check_~n#1| (+ |ULTIMATE.start_check_~l#1| |ULTIMATE.start_check_~y#1|))) (= .cse2 (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|)) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9) (and .cse0 (= |ULTIMATE.start_check_~l#1| 0) .cse1 (or (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~x#1|) (<= |ULTIMATE.start_check_~n#1| |ULTIMATE.start_check_~y#1|)) .cse3 .cse4 .cse5 .cse6 .cse7 (= |ULTIMATE.start_lcp_~l~0#1| 0) .cse8 .cse9 (= |ULTIMATE.start_lcp_#res#1| 0))))) [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-12-21 12:26:16,975 INFO L858 garLoopResultBuilder]: For program point L24(lines 24 33) no Hoare annotation was computed. [2021-12-21 12:26:16,976 INFO L858 garLoopResultBuilder]: For program point L18-1(line 18) no Hoare annotation was computed. [2021-12-21 12:26:16,976 INFO L858 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-12-21 12:26:16,976 INFO L854 garLoopResultBuilder]: At program point L18-5(lines 18 20) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_lcp_~y#1|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (= .cse0 (select |#memory_int| |ULTIMATE.start_lcp_~a#1.base|)) (<= |ULTIMATE.start_lcp_~x#1| |ULTIMATE.start_main_~x~0#1|) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|)) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_lcp_~n#1|))) [2021-12-21 12:26:16,976 INFO L858 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-12-21 12:26:16,976 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (= .cse0 (select |#memory_int| |ULTIMATE.start_main_#t~malloc15#1.base|)))) [2021-12-21 12:26:16,976 INFO L858 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-12-21 12:26:16,976 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5 7) the Hoare annotation is: true [2021-12-21 12:26:16,976 INFO L858 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 14) the Hoare annotation is: true [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 12 14) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 14) no Hoare annotation was computed. [2021-12-21 12:26:16,977 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-21 12:26:16,979 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-21 12:26:16,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 12:26:16,983 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-21 12:26:16,985 INFO L158 Benchmark]: Toolchain (without parser) took 9744.80ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 79.2MB in the beginning and 98.2MB in the end (delta: -19.0MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,986 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 12:26:16,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.90ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 78.8MB in the end (delta: 244.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.03ms. Allocated memory is still 102.8MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,986 INFO L158 Benchmark]: Boogie Preprocessor took 19.75ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,986 INFO L158 Benchmark]: RCFGBuilder took 307.11ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 63.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,987 INFO L158 Benchmark]: TraceAbstraction took 9224.42ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 63.4MB in the beginning and 98.2MB in the end (delta: -34.8MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2021-12-21 12:26:16,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory is still 43.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 162.90ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 78.8MB in the end (delta: 244.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.03ms. Allocated memory is still 102.8MB. Free memory was 78.8MB in the beginning and 76.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.75ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 307.11ms. Allocated memory is still 102.8MB. Free memory was 75.6MB in the beginning and 63.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9224.42ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 63.4MB in the beginning and 98.2MB in the end (delta: -34.8MB). Peak memory consumption was 58.1MB. 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 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 593 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 43 IncrementalHoareTripleChecker+Unchecked, 428 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 265 IncrementalHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 165 mSDtfsCounter, 265 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 26 PreInvPairs, 37 NumberOfFragments, 476 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 444 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 285 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 316 ConstructedInterpolants, 4 QuantifiedInterpolants, 1221 SizeOfPredicates, 33 NumberOfNonLiveVariables, 401 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 125/135 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-21 12:26:17,013 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/verifythis/lcp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:26:18,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:26:18,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:26:18,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:26:18,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:26:18,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:26:18,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:26:18,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:26:18,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:26:18,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:26:18,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:26:18,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:26:18,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:26:18,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:26:18,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:26:18,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:26:18,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:26:18,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:26:18,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:26:18,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:26:18,594 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:26:18,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:26:18,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:26:18,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:26:18,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:26:18,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:26:18,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:26:18,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:26:18,603 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:26:18,604 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:26:18,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:26:18,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:26:18,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:26:18,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:26:18,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:26:18,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:26:18,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:26:18,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:26:18,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:26:18,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:26:18,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:26:18,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 12:26:18,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:26:18,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:26:18,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:26:18,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:26:18,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:26:18,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:26:18,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:26:18,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:26:18,643 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:26:18,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:26:18,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 12:26:18,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:26:18,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:26:18,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:26:18,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 12:26:18,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 12:26:18,647 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e47fbc54bff4eeebe072cdb8acf7cfe734a91f148fd421ae1769ba3b81a6f5a [2021-12-21 12:26:18,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:26:18,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:26:18,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:26:18,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:26:18,935 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:26:18,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/lcp.c [2021-12-21 12:26:18,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b0e8959/bf86d1bff32a44ec99b35852c34ec69c/FLAG371daa93d [2021-12-21 12:26:19,298 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:26:19,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/lcp.c [2021-12-21 12:26:19,308 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b0e8959/bf86d1bff32a44ec99b35852c34ec69c/FLAG371daa93d [2021-12-21 12:26:19,719 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b0e8959/bf86d1bff32a44ec99b35852c34ec69c [2021-12-21 12:26:19,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:26:19,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:26:19,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:26:19,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:26:19,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:26:19,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d9fa0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19, skipping insertion in model container [2021-12-21 12:26:19,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:26:19,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:26:19,814 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/verifythis/lcp.c[515,528] [2021-12-21 12:26:19,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:26:19,833 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:26:19,841 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/verifythis/lcp.c[515,528] [2021-12-21 12:26:19,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:26:19,903 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:26:19,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19 WrapperNode [2021-12-21 12:26:19,904 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:26:19,905 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:26:19,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:26:19,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:26:19,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,935 INFO L137 Inliner]: procedures = 22, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2021-12-21 12:26:19,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:26:19,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:26:19,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:26:19,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:26:19,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,956 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:26:19,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:26:19,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:26:19,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:26:19,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (1/1) ... [2021-12-21 12:26:19,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:26:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:26:19,997 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 12:26:20,003 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 12:26:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:26:20,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 12:26:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 12:26:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 12:26:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 12:26:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-21 12:26:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:26:20,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:26:20,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 12:26:20,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 12:26:20,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:26:20,122 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:26:20,123 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:26:20,272 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:26:20,276 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:26:20,276 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 12:26:20,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:20 BoogieIcfgContainer [2021-12-21 12:26:20,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:26:20,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:26:20,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:26:20,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:26:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:26:19" (1/3) ... [2021-12-21 12:26:20,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e63ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:20, skipping insertion in model container [2021-12-21 12:26:20,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:26:19" (2/3) ... [2021-12-21 12:26:20,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e63ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:26:20, skipping insertion in model container [2021-12-21 12:26:20,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:26:20" (3/3) ... [2021-12-21 12:26:20,282 INFO L111 eAbstractionObserver]: Analyzing ICFG lcp.c [2021-12-21 12:26:20,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:26:20,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:26:20,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:26:20,324 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 12:26:20,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:26:20,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 12:26:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 12:26:20,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:20,337 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:20,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:20,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:20,341 INFO L85 PathProgramCache]: Analyzing trace with hash 867982546, now seen corresponding path program 1 times [2021-12-21 12:26:20,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:26:20,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443776291] [2021-12-21 12:26:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:20,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:26:20,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:26:20,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:26:20,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 12:26:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:20,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 12:26:20,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-21 12:26:20,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:26:20,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:26:20,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443776291] [2021-12-21 12:26:20,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443776291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:20,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:20,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:26:20,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135945578] [2021-12-21 12:26:20,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:20,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:26:20,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:26:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:26:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:26:20,520 INFO L87 Difference]: Start difference. First operand has 33 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:20,533 INFO L93 Difference]: Finished difference Result 63 states and 83 transitions. [2021-12-21 12:26:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:26:20,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-21 12:26:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:20,539 INFO L225 Difference]: With dead ends: 63 [2021-12-21 12:26:20,539 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 12:26:20,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 12:26:20,543 INFO L933 BasicCegarLoop]: 38 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, 38 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 12:26:20,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:26:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 12:26:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 12:26:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-12-21 12:26:20,569 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 28 [2021-12-21 12:26:20,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:20,569 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-12-21 12:26:20,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:20,570 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-12-21 12:26:20,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-21 12:26:20,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:20,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:20,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 12:26:20,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:26:20,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1785702985, now seen corresponding path program 1 times [2021-12-21 12:26:20,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:26:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343478753] [2021-12-21 12:26:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:20,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:26:20,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:26:20,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:26:20,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 12:26:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:20,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 12:26:20,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 12:26:21,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 12:26:21,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:26:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343478753] [2021-12-21 12:26:21,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343478753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:26:21,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:26:21,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:26:21,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324441626] [2021-12-21 12:26:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:26:21,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:26:21,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:26:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:26:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:26:21,021 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:21,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:21,103 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-21 12:26:21,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:26:21,104 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-21 12:26:21,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:21,105 INFO L225 Difference]: With dead ends: 45 [2021-12-21 12:26:21,105 INFO L226 Difference]: Without dead ends: 31 [2021-12-21 12:26:21,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:26:21,106 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:21,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 126 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:26:21,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-21 12:26:21,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-21 12:26:21,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 12:26:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-21 12:26:21,111 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 30 [2021-12-21 12:26:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:21,112 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-21 12:26:21,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 12:26:21,113 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-21 12:26:21,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 12:26:21,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:21,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:21,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:26:21,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:26:21,320 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:21,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash -964575686, now seen corresponding path program 1 times [2021-12-21 12:26:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:26:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017202941] [2021-12-21 12:26:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:21,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:26:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:26:21,323 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:26:21,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 12:26:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:21,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-21 12:26:21,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:21,885 INFO L353 Elim1Store]: treesize reduction 90, result has 7.2 percent of original size [2021-12-21 12:26:21,886 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 16 [2021-12-21 12:26:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 12:26:21,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:26:26,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:26:26,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017202941] [2021-12-21 12:26:26,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017202941] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:26:26,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369450350] [2021-12-21 12:26:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:26,472 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-21 12:26:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-21 12:26:26,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-21 12:26:26,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-12-21 12:26:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:26,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 12:26:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:26:26,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-21 12:26:28,649 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_1|))) is different from true [2021-12-21 12:26:28,775 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 54 [2021-12-21 12:26:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:26:28,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:26:39,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369450350] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:26:39,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:26:39,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 7] total 20 [2021-12-21 12:26:39,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336565226] [2021-12-21 12:26:39,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:26:39,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 12:26:39,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:26:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 12:26:39,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=539, Unknown=8, NotChecked=46, Total=650 [2021-12-21 12:26:39,423 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 12:26:57,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:26:57,904 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2021-12-21 12:26:57,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-21 12:26:57,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 33 [2021-12-21 12:26:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:26:57,906 INFO L225 Difference]: With dead ends: 71 [2021-12-21 12:26:57,906 INFO L226 Difference]: Without dead ends: 53 [2021-12-21 12:26:57,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 35.2s TimeCoverageRelationStatistics Valid=219, Invalid=1492, Unknown=15, NotChecked=80, Total=1806 [2021-12-21 12:26:57,907 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 80 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 12:26:57,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 241 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 354 Invalid, 0 Unknown, 79 Unchecked, 0.6s Time] [2021-12-21 12:26:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-21 12:26:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2021-12-21 12:26:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-21 12:26:57,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2021-12-21 12:26:57,914 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 33 [2021-12-21 12:26:57,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:26:57,915 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2021-12-21 12:26:57,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 12:26:57,915 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2021-12-21 12:26:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 12:26:57,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:26:57,916 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:26:57,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-12-21 12:26:58,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-21 12:26:58,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 12:26:58,319 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:26:58,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:26:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -436474905, now seen corresponding path program 1 times [2021-12-21 12:26:58,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 12:26:58,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570927369] [2021-12-21 12:26:58,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:26:58,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 12:26:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 12:26:58,323 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 12:26:58,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 12:26:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:26:58,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-21 12:26:58,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:27:01,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:27:01,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:27:01,687 INFO L353 Elim1Store]: treesize reduction 144, result has 32.4 percent of original size [2021-12-21 12:27:01,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 61 treesize of output 81 [2021-12-21 12:27:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 12:27:02,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:27:06,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 12:27:06,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570927369] [2021-12-21 12:27:06,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570927369] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:27:06,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1718812994] [2021-12-21 12:27:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:27:06,727 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-12-21 12:27:06,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-12-21 12:27:06,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-12-21 12:27:06,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-12-21 12:27:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:27:06,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 12:27:06,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:27:06,828 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-21 12:27:09,015 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2|))) is different from true [2021-12-21 12:27:11,242 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_3| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_check_~a#1.base_BEFORE_CALL_3|))) is different from true [2021-12-21 12:27:11,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 29 [2021-12-21 12:27:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 4 not checked. [2021-12-21 12:27:11,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:27:17,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1718812994] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:27:17,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 12:27:17,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10] total 27 [2021-12-21 12:27:17,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5224334] [2021-12-21 12:27:17,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 12:27:17,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 12:27:17,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 12:27:17,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 12:27:17,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=797, Unknown=7, NotChecked=114, Total=992 [2021-12-21 12:27:17,719 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 27 states, 23 states have (on average 1.8695652173913044) internal successors, (43), 23 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6)