./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_clnt.blast.04.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/openssl/s3_clnt.blast.04.i.cil-1.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 253b2130a235408df8c2a581facc1d40316361da7beeb584c737673c98999cc2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:35:12,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:35:12,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:35:12,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:35:12,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:35:12,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:35:12,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:35:12,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:35:12,144 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:35:12,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:35:12,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:35:12,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:35:12,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:35:12,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:35:12,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:35:12,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:35:12,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:35:12,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:35:12,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:35:12,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:35:12,170 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:35:12,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:35:12,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:35:12,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:35:12,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:35:12,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:35:12,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:35:12,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:35:12,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:35:12,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:35:12,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:35:12,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:35:12,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:35:12,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:35:12,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:35:12,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:35:12,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:35:12,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:35:12,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:35:12,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:35:12,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:35:12,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:35:12,187 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 22:35:12,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:35:12,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:35:12,220 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:35:12,220 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:35:12,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:35:12,221 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:35:12,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:35:12,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:35:12,222 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:35:12,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:35:12,223 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:35:12,224 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:35:12,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:35:12,225 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:35:12,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:35:12,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:35:12,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:35:12,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:35:12,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:35:12,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:35:12,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:35:12,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:35:12,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 22:35:12,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 22:35:12,227 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:35:12,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:35:12,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:35:12,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 253b2130a235408df8c2a581facc1d40316361da7beeb584c737673c98999cc2 [2022-07-20 22:35:12,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:35:12,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:35:12,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:35:12,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:35:12,552 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:35:12,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:35:12,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a43770a/b456189acdbf48a7bf547f97ffe93aad/FLAG10392522a [2022-07-20 22:35:13,048 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:35:13,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:35:13,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a43770a/b456189acdbf48a7bf547f97ffe93aad/FLAG10392522a [2022-07-20 22:35:13,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90a43770a/b456189acdbf48a7bf547f97ffe93aad [2022-07-20 22:35:13,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:35:13,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:35:13,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:35:13,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:35:13,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:35:13,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ff3f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13, skipping insertion in model container [2022-07-20 22:35:13,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:35:13,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:35:13,751 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/openssl/s3_clnt.blast.04.i.cil-1.c[65405,65418] [2022-07-20 22:35:13,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:35:13,785 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:35:13,864 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/openssl/s3_clnt.blast.04.i.cil-1.c[65405,65418] [2022-07-20 22:35:13,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:35:13,878 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:35:13,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13 WrapperNode [2022-07-20 22:35:13,878 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:35:13,879 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:35:13,879 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:35:13,880 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:35:13,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,928 INFO L137 Inliner]: procedures = 31, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 718 [2022-07-20 22:35:13,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:35:13,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:35:13,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:35:13,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:35:13,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:13,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:14,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:14,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:14,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:35:14,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:35:14,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:35:14,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:35:14,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (1/1) ... [2022-07-20 22:35:14,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:35:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:35:14,042 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) [2022-07-20 22:35:14,048 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 [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 22:35:14,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 22:35:14,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:35:14,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:35:14,189 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:35:14,190 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:35:14,199 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:35:16,898 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-07-20 22:35:16,898 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-07-20 22:35:16,899 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:35:16,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:35:16,903 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:35:16,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:35:16 BoogieIcfgContainer [2022-07-20 22:35:16,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:35:16,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:35:16,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:35:16,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:35:16,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:35:13" (1/3) ... [2022-07-20 22:35:16,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb53eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:35:16, skipping insertion in model container [2022-07-20 22:35:16,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:35:13" (2/3) ... [2022-07-20 22:35:16,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb53eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:35:16, skipping insertion in model container [2022-07-20 22:35:16,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:35:16" (3/3) ... [2022-07-20 22:35:16,921 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:35:16,943 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:35:16,943 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:35:17,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:35:17,024 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3f4ad49d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2f6f816b [2022-07-20 22:35:17,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:35:17,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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) [2022-07-20 22:35:17,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-20 22:35:17,043 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:17,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:17,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:17,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2022-07-20 22:35:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:17,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710366318] [2022-07-20 22:35:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:35:17,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:17,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710366318] [2022-07-20 22:35:17,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710366318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:17,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:17,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:17,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36269475] [2022-07-20 22:35:17,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:17,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:17,589 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-07-20 22:35:18,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:18,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:18,898 INFO L93 Difference]: Finished difference Result 255 states and 430 transitions. [2022-07-20 22:35:18,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-20 22:35:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:18,907 INFO L225 Difference]: With dead ends: 255 [2022-07-20 22:35:18,907 INFO L226 Difference]: Without dead ends: 116 [2022-07-20 22:35:18,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:18,914 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 7 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:18,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 530 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-20 22:35:18,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-20 22:35:18,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-07-20 22:35:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 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) [2022-07-20 22:35:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2022-07-20 22:35:18,939 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2022-07-20 22:35:18,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:18,939 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2022-07-20 22:35:18,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2022-07-20 22:35:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2022-07-20 22:35:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-20 22:35:18,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:18,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:18,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 22:35:18,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1001988123, now seen corresponding path program 1 times [2022-07-20 22:35:18,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:18,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186946058] [2022-07-20 22:35:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:18,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:19,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 22:35:19,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:19,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186946058] [2022-07-20 22:35:19,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186946058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:19,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:19,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:35:19,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105432544] [2022-07-20 22:35:19,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:19,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:35:19,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:35:19,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:35:19,129 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-07-20 22:35:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:19,166 INFO L93 Difference]: Finished difference Result 321 states and 484 transitions. [2022-07-20 22:35:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:35:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-07-20 22:35:19,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:19,169 INFO L225 Difference]: With dead ends: 321 [2022-07-20 22:35:19,170 INFO L226 Difference]: Without dead ends: 216 [2022-07-20 22:35:19,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:35:19,172 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 124 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:19,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 310 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:35:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-20 22:35:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-07-20 22:35:19,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.4883720930232558) internal successors, (320), 215 states have internal predecessors, (320), 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) [2022-07-20 22:35:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 320 transitions. [2022-07-20 22:35:19,197 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 320 transitions. Word has length 38 [2022-07-20 22:35:19,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:19,198 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 320 transitions. [2022-07-20 22:35:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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) [2022-07-20 22:35:19,199 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 320 transitions. [2022-07-20 22:35:19,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 22:35:19,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:19,204 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 22:35:19,207 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash -596933037, now seen corresponding path program 1 times [2022-07-20 22:35:19,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241162020] [2022-07-20 22:35:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:19,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 22:35:19,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:19,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241162020] [2022-07-20 22:35:19,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241162020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:19,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:19,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:35:19,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663365981] [2022-07-20 22:35:19,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:19,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:35:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:19,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:35:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:35:19,384 INFO L87 Difference]: Start difference. First operand 216 states and 320 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-20 22:35:21,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:21,428 INFO L93 Difference]: Finished difference Result 421 states and 631 transitions. [2022-07-20 22:35:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:35:21,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-20 22:35:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:21,431 INFO L225 Difference]: With dead ends: 421 [2022-07-20 22:35:21,431 INFO L226 Difference]: Without dead ends: 316 [2022-07-20 22:35:21,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:35:21,432 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:21,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 461 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-07-20 22:35:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-20 22:35:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2022-07-20 22:35:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 1.4825396825396826) internal successors, (467), 315 states have internal predecessors, (467), 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) [2022-07-20 22:35:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 467 transitions. [2022-07-20 22:35:21,463 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 467 transitions. Word has length 53 [2022-07-20 22:35:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:21,463 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 467 transitions. [2022-07-20 22:35:21,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-07-20 22:35:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 467 transitions. [2022-07-20 22:35:21,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-20 22:35:21,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:21,465 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 22:35:21,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:21,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash -971278195, now seen corresponding path program 1 times [2022-07-20 22:35:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:21,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783068084] [2022-07-20 22:35:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:35:21,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:21,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783068084] [2022-07-20 22:35:21,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783068084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:21,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:21,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019747510] [2022-07-20 22:35:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:21,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:21,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:21,649 INFO L87 Difference]: Start difference. First operand 316 states and 467 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-07-20 22:35:23,669 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:23,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:23,944 INFO L93 Difference]: Finished difference Result 894 states and 1328 transitions. [2022-07-20 22:35:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:23,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-07-20 22:35:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:23,948 INFO L225 Difference]: With dead ends: 894 [2022-07-20 22:35:23,948 INFO L226 Difference]: Without dead ends: 588 [2022-07-20 22:35:23,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:23,949 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 107 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:23,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 265 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:35:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-07-20 22:35:23,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 388. [2022-07-20 22:35:23,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.5322997416020672) internal successors, (593), 387 states have internal predecessors, (593), 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) [2022-07-20 22:35:23,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 593 transitions. [2022-07-20 22:35:23,981 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 593 transitions. Word has length 71 [2022-07-20 22:35:23,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:23,981 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 593 transitions. [2022-07-20 22:35:23,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2022-07-20 22:35:23,982 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 593 transitions. [2022-07-20 22:35:23,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-20 22:35:23,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:23,983 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:23,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 22:35:23,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:23,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:23,983 INFO L85 PathProgramCache]: Analyzing trace with hash -49538802, now seen corresponding path program 1 times [2022-07-20 22:35:23,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:23,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795894123] [2022-07-20 22:35:23,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:23,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:24,128 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:35:24,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:24,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795894123] [2022-07-20 22:35:24,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795894123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:24,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:24,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:24,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444267716] [2022-07-20 22:35:24,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:24,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:24,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:24,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:24,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:24,131 INFO L87 Difference]: Start difference. First operand 388 states and 593 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-07-20 22:35:26,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:28,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:28,521 INFO L93 Difference]: Finished difference Result 944 states and 1441 transitions. [2022-07-20 22:35:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-20 22:35:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:28,524 INFO L225 Difference]: With dead ends: 944 [2022-07-20 22:35:28,524 INFO L226 Difference]: Without dead ends: 566 [2022-07-20 22:35:28,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:28,526 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 91 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:28,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 550 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.4s Time] [2022-07-20 22:35:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-07-20 22:35:28,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 440. [2022-07-20 22:35:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.55125284738041) internal successors, (681), 439 states have internal predecessors, (681), 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) [2022-07-20 22:35:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 681 transitions. [2022-07-20 22:35:28,553 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 681 transitions. Word has length 72 [2022-07-20 22:35:28,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 681 transitions. [2022-07-20 22:35:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-07-20 22:35:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 681 transitions. [2022-07-20 22:35:28,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-20 22:35:28,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:28,555 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-20 22:35:28,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:28,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:28,557 INFO L85 PathProgramCache]: Analyzing trace with hash 91009808, now seen corresponding path program 1 times [2022-07-20 22:35:28,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:28,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210258346] [2022-07-20 22:35:28,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:28,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:35:28,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:28,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210258346] [2022-07-20 22:35:28,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210258346] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:28,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:28,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565475712] [2022-07-20 22:35:28,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:28,738 INFO L87 Difference]: Start difference. First operand 440 states and 681 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-07-20 22:35:30,751 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:30,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:30,975 INFO L93 Difference]: Finished difference Result 1142 states and 1756 transitions. [2022-07-20 22:35:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:30,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-07-20 22:35:30,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:30,977 INFO L225 Difference]: With dead ends: 1142 [2022-07-20 22:35:30,978 INFO L226 Difference]: Without dead ends: 712 [2022-07-20 22:35:30,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:30,979 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 107 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:30,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 264 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:35:30,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-20 22:35:31,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 463. [2022-07-20 22:35:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.5692640692640694) internal successors, (725), 462 states have internal predecessors, (725), 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) [2022-07-20 22:35:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 725 transitions. [2022-07-20 22:35:31,012 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 725 transitions. Word has length 72 [2022-07-20 22:35:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:31,013 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 725 transitions. [2022-07-20 22:35:31,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2022-07-20 22:35:31,014 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 725 transitions. [2022-07-20 22:35:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-20 22:35:31,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:31,015 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-20 22:35:31,016 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:31,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:31,016 INFO L85 PathProgramCache]: Analyzing trace with hash -406970094, now seen corresponding path program 1 times [2022-07-20 22:35:31,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:31,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483314846] [2022-07-20 22:35:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:35:31,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:31,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483314846] [2022-07-20 22:35:31,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483314846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:31,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:31,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:31,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831913549] [2022-07-20 22:35:31,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:31,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:31,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:31,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:31,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:31,190 INFO L87 Difference]: Start difference. First operand 463 states and 725 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:35:33,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:35,232 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:35,529 INFO L93 Difference]: Finished difference Result 1094 states and 1703 transitions. [2022-07-20 22:35:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:35,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-20 22:35:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:35,532 INFO L225 Difference]: With dead ends: 1094 [2022-07-20 22:35:35,532 INFO L226 Difference]: Without dead ends: 641 [2022-07-20 22:35:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:35,533 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 93 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:35,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 550 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-20 22:35:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-07-20 22:35:35,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 509. [2022-07-20 22:35:35,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.580708661417323) internal successors, (803), 508 states have internal predecessors, (803), 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) [2022-07-20 22:35:35,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 803 transitions. [2022-07-20 22:35:35,544 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 803 transitions. Word has length 92 [2022-07-20 22:35:35,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:35,545 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 803 transitions. [2022-07-20 22:35:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:35:35,545 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 803 transitions. [2022-07-20 22:35:35,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-20 22:35:35,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:35,546 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:35,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-20 22:35:35,546 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:35,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 486516244, now seen corresponding path program 1 times [2022-07-20 22:35:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:35,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701232402] [2022-07-20 22:35:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:35,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:35,726 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-20 22:35:35,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:35,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701232402] [2022-07-20 22:35:35,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701232402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:35,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:35,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:35,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604296084] [2022-07-20 22:35:35,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:35,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:35,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:35,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:35,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:35,730 INFO L87 Difference]: Start difference. First operand 509 states and 803 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:35:37,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:39,756 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:39,986 INFO L93 Difference]: Finished difference Result 1094 states and 1720 transitions. [2022-07-20 22:35:39,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:39,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-07-20 22:35:39,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:39,988 INFO L225 Difference]: With dead ends: 1094 [2022-07-20 22:35:39,988 INFO L226 Difference]: Without dead ends: 595 [2022-07-20 22:35:39,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:39,989 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 40 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:39,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 494 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-07-20 22:35:39,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-07-20 22:35:39,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 549. [2022-07-20 22:35:39,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.5894160583941606) internal successors, (871), 548 states have internal predecessors, (871), 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) [2022-07-20 22:35:39,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 871 transitions. [2022-07-20 22:35:39,999 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 871 transitions. Word has length 92 [2022-07-20 22:35:39,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:39,999 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 871 transitions. [2022-07-20 22:35:40,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:35:40,000 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 871 transitions. [2022-07-20 22:35:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-20 22:35:40,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:40,001 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:40,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-20 22:35:40,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:40,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 648309393, now seen corresponding path program 1 times [2022-07-20 22:35:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:40,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778795880] [2022-07-20 22:35:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:35:40,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:40,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778795880] [2022-07-20 22:35:40,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778795880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:40,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:40,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:40,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046829122] [2022-07-20 22:35:40,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:40,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:40,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:40,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:40,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:40,152 INFO L87 Difference]: Start difference. First operand 549 states and 871 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-20 22:35:42,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:42,393 INFO L93 Difference]: Finished difference Result 1285 states and 2001 transitions. [2022-07-20 22:35:42,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:42,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-07-20 22:35:42,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:42,396 INFO L225 Difference]: With dead ends: 1285 [2022-07-20 22:35:42,396 INFO L226 Difference]: Without dead ends: 746 [2022-07-20 22:35:42,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:42,397 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 108 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:42,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 264 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:35:42,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-20 22:35:42,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 549. [2022-07-20 22:35:42,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.5784671532846715) internal successors, (865), 548 states have internal predecessors, (865), 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) [2022-07-20 22:35:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 865 transitions. [2022-07-20 22:35:42,408 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 865 transitions. Word has length 93 [2022-07-20 22:35:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:42,409 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 865 transitions. [2022-07-20 22:35:42,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-20 22:35:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 865 transitions. [2022-07-20 22:35:42,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-20 22:35:42,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:42,410 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-20 22:35:42,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-20 22:35:42,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:42,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:42,411 INFO L85 PathProgramCache]: Analyzing trace with hash 328538170, now seen corresponding path program 2 times [2022-07-20 22:35:42,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:42,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240879824] [2022-07-20 22:35:42,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:35:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:42,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240879824] [2022-07-20 22:35:42,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240879824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:42,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:42,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107987785] [2022-07-20 22:35:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:42,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:42,562 INFO L87 Difference]: Start difference. First operand 549 states and 865 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:44,575 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:46,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:46,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:46,850 INFO L93 Difference]: Finished difference Result 1282 states and 1986 transitions. [2022-07-20 22:35:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:46,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-20 22:35:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:46,852 INFO L225 Difference]: With dead ends: 1282 [2022-07-20 22:35:46,853 INFO L226 Difference]: Without dead ends: 743 [2022-07-20 22:35:46,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:46,855 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 111 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:46,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 282 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 203 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-20 22:35:46,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-07-20 22:35:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 549. [2022-07-20 22:35:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.5602189781021898) internal successors, (855), 548 states have internal predecessors, (855), 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) [2022-07-20 22:35:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 855 transitions. [2022-07-20 22:35:46,867 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 855 transitions. Word has length 106 [2022-07-20 22:35:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:46,867 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 855 transitions. [2022-07-20 22:35:46,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 855 transitions. [2022-07-20 22:35:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-20 22:35:46,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:46,870 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:35:46,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-20 22:35:46,871 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 945009752, now seen corresponding path program 1 times [2022-07-20 22:35:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:46,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69120337] [2022-07-20 22:35:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:46,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:47,040 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:35:47,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:47,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69120337] [2022-07-20 22:35:47,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69120337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:47,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:47,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:47,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116560294] [2022-07-20 22:35:47,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:47,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:47,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:47,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:47,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:47,043 INFO L87 Difference]: Start difference. First operand 549 states and 855 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:49,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:51,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:51,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:51,384 INFO L93 Difference]: Finished difference Result 1212 states and 1872 transitions. [2022-07-20 22:35:51,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:51,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-20 22:35:51,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:51,386 INFO L225 Difference]: With dead ends: 1212 [2022-07-20 22:35:51,386 INFO L226 Difference]: Without dead ends: 673 [2022-07-20 22:35:51,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:51,388 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 97 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:51,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 538 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-20 22:35:51,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-07-20 22:35:51,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 549. [2022-07-20 22:35:51,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.5565693430656935) internal successors, (853), 548 states have internal predecessors, (853), 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) [2022-07-20 22:35:51,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 853 transitions. [2022-07-20 22:35:51,399 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 853 transitions. Word has length 106 [2022-07-20 22:35:51,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:51,399 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 853 transitions. [2022-07-20 22:35:51,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 853 transitions. [2022-07-20 22:35:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-20 22:35:51,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:51,401 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:35:51,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-20 22:35:51,401 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1505709530, now seen corresponding path program 1 times [2022-07-20 22:35:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:51,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303931395] [2022-07-20 22:35:51,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:35:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:51,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303931395] [2022-07-20 22:35:51,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303931395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:51,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:51,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:51,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131824095] [2022-07-20 22:35:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:51,561 INFO L87 Difference]: Start difference. First operand 549 states and 853 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:53,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:55,578 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:55,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:55,789 INFO L93 Difference]: Finished difference Result 1132 states and 1748 transitions. [2022-07-20 22:35:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:55,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-20 22:35:55,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:55,792 INFO L225 Difference]: With dead ends: 1132 [2022-07-20 22:35:55,792 INFO L226 Difference]: Without dead ends: 593 [2022-07-20 22:35:55,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:55,793 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 46 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:55,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 492 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-07-20 22:35:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-07-20 22:35:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 549. [2022-07-20 22:35:55,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.552919708029197) internal successors, (851), 548 states have internal predecessors, (851), 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) [2022-07-20 22:35:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 851 transitions. [2022-07-20 22:35:55,804 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 851 transitions. Word has length 106 [2022-07-20 22:35:55,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:55,804 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 851 transitions. [2022-07-20 22:35:55,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:35:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 851 transitions. [2022-07-20 22:35:55,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-20 22:35:55,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:55,806 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:35:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-20 22:35:55,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:55,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1643241353, now seen corresponding path program 1 times [2022-07-20 22:35:55,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:55,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260301052] [2022-07-20 22:35:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:35:56,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:56,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260301052] [2022-07-20 22:35:56,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260301052] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:56,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:56,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847086271] [2022-07-20 22:35:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:56,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:56,002 INFO L87 Difference]: Start difference. First operand 549 states and 851 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:35:58,015 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:35:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:35:58,283 INFO L93 Difference]: Finished difference Result 1283 states and 1959 transitions. [2022-07-20 22:35:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:35:58,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-20 22:35:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:35:58,286 INFO L225 Difference]: With dead ends: 1283 [2022-07-20 22:35:58,286 INFO L226 Difference]: Without dead ends: 744 [2022-07-20 22:35:58,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:35:58,287 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 117 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:35:58,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 286 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:35:58,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-20 22:35:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 549. [2022-07-20 22:35:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.5346715328467153) internal successors, (841), 548 states have internal predecessors, (841), 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) [2022-07-20 22:35:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 841 transitions. [2022-07-20 22:35:58,301 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 841 transitions. Word has length 107 [2022-07-20 22:35:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:35:58,301 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 841 transitions. [2022-07-20 22:35:58,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:35:58,301 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 841 transitions. [2022-07-20 22:35:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-20 22:35:58,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:35:58,303 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:35:58,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-20 22:35:58,303 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:35:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:35:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 521678268, now seen corresponding path program 1 times [2022-07-20 22:35:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:35:58,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227746999] [2022-07-20 22:35:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:35:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:35:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:35:58,525 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:35:58,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:35:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227746999] [2022-07-20 22:35:58,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227746999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:35:58,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:35:58,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:35:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083630477] [2022-07-20 22:35:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:35:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:35:58,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:35:58,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:35:58,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:35:58,527 INFO L87 Difference]: Start difference. First operand 549 states and 841 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:36:00,554 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:00,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:00,783 INFO L93 Difference]: Finished difference Result 1167 states and 1766 transitions. [2022-07-20 22:36:00,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:00,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-20 22:36:00,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:00,786 INFO L225 Difference]: With dead ends: 1167 [2022-07-20 22:36:00,786 INFO L226 Difference]: Without dead ends: 819 [2022-07-20 22:36:00,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:00,787 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 113 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:00,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 492 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 214 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:00,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-07-20 22:36:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 597. [2022-07-20 22:36:00,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 596 states have (on average 1.5201342281879195) internal successors, (906), 596 states have internal predecessors, (906), 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) [2022-07-20 22:36:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 906 transitions. [2022-07-20 22:36:00,799 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 906 transitions. Word has length 107 [2022-07-20 22:36:00,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:00,800 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 906 transitions. [2022-07-20 22:36:00,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2022-07-20 22:36:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 906 transitions. [2022-07-20 22:36:00,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-20 22:36:00,801 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:00,801 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:00,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-20 22:36:00,801 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:00,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:00,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1921869643, now seen corresponding path program 1 times [2022-07-20 22:36:00,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:00,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488677113] [2022-07-20 22:36:00,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:00,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:36:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:01,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488677113] [2022-07-20 22:36:01,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488677113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:01,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:01,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469479286] [2022-07-20 22:36:01,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:01,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:01,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:01,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:01,001 INFO L87 Difference]: Start difference. First operand 597 states and 906 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2022-07-20 22:36:03,008 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:03,254 INFO L93 Difference]: Finished difference Result 1460 states and 2192 transitions. [2022-07-20 22:36:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2022-07-20 22:36:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:03,257 INFO L225 Difference]: With dead ends: 1460 [2022-07-20 22:36:03,257 INFO L226 Difference]: Without dead ends: 873 [2022-07-20 22:36:03,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:03,258 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 93 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:03,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 266 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 214 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:03,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-07-20 22:36:03,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 711. [2022-07-20 22:36:03,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.5380281690140845) internal successors, (1092), 710 states have internal predecessors, (1092), 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) [2022-07-20 22:36:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1092 transitions. [2022-07-20 22:36:03,272 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1092 transitions. Word has length 107 [2022-07-20 22:36:03,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:03,272 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1092 transitions. [2022-07-20 22:36:03,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2022-07-20 22:36:03,273 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1092 transitions. [2022-07-20 22:36:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:03,274 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:03,274 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:36:03,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-20 22:36:03,274 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:03,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:03,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1096338685, now seen corresponding path program 1 times [2022-07-20 22:36:03,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:03,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870972938] [2022-07-20 22:36:03,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:03,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870972938] [2022-07-20 22:36:03,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870972938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:03,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:03,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865729924] [2022-07-20 22:36:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:03,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:03,429 INFO L87 Difference]: Start difference. First operand 711 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:05,443 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:07,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:07,717 INFO L93 Difference]: Finished difference Result 1536 states and 2344 transitions. [2022-07-20 22:36:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:07,726 INFO L225 Difference]: With dead ends: 1536 [2022-07-20 22:36:07,726 INFO L226 Difference]: Without dead ends: 835 [2022-07-20 22:36:07,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:07,729 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 91 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:07,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 530 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-07-20 22:36:07,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-20 22:36:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 711. [2022-07-20 22:36:07,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.5352112676056338) internal successors, (1090), 710 states have internal predecessors, (1090), 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) [2022-07-20 22:36:07,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1090 transitions. [2022-07-20 22:36:07,746 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1090 transitions. Word has length 108 [2022-07-20 22:36:07,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:07,746 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1090 transitions. [2022-07-20 22:36:07,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1090 transitions. [2022-07-20 22:36:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:07,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:07,766 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:07,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-20 22:36:07,766 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:07,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1722268611, now seen corresponding path program 1 times [2022-07-20 22:36:07,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:07,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641045254] [2022-07-20 22:36:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:07,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:07,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:07,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641045254] [2022-07-20 22:36:07,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641045254] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:07,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:07,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406099296] [2022-07-20 22:36:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:07,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:07,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:07,884 INFO L87 Difference]: Start difference. First operand 711 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:09,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:11,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:12,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:12,149 INFO L93 Difference]: Finished difference Result 1285 states and 1958 transitions. [2022-07-20 22:36:12,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:12,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:12,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:12,152 INFO L225 Difference]: With dead ends: 1285 [2022-07-20 22:36:12,152 INFO L226 Difference]: Without dead ends: 829 [2022-07-20 22:36:12,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:12,153 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 85 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:12,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 524 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 2 Unknown, 0 Unchecked, 4.2s Time] [2022-07-20 22:36:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-07-20 22:36:12,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 711. [2022-07-20 22:36:12,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 1.532394366197183) internal successors, (1088), 710 states have internal predecessors, (1088), 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) [2022-07-20 22:36:12,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 1088 transitions. [2022-07-20 22:36:12,165 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 1088 transitions. Word has length 108 [2022-07-20 22:36:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:12,166 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 1088 transitions. [2022-07-20 22:36:12,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:12,166 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 1088 transitions. [2022-07-20 22:36:12,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:12,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:12,167 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:12,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-20 22:36:12,168 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:12,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:12,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2029459340, now seen corresponding path program 1 times [2022-07-20 22:36:12,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:12,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458577584] [2022-07-20 22:36:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:12,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:12,288 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:36:12,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:12,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458577584] [2022-07-20 22:36:12,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458577584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:12,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:12,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:12,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962889133] [2022-07-20 22:36:12,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:12,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:12,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:12,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:12,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:12,290 INFO L87 Difference]: Start difference. First operand 711 states and 1088 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-20 22:36:14,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:14,532 INFO L93 Difference]: Finished difference Result 1607 states and 2433 transitions. [2022-07-20 22:36:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:14,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:14,560 INFO L225 Difference]: With dead ends: 1607 [2022-07-20 22:36:14,560 INFO L226 Difference]: Without dead ends: 906 [2022-07-20 22:36:14,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:14,562 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 92 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:14,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 268 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-07-20 22:36:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 747. [2022-07-20 22:36:14,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 746 states have (on average 1.5509383378016086) internal successors, (1157), 746 states have internal predecessors, (1157), 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) [2022-07-20 22:36:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1157 transitions. [2022-07-20 22:36:14,589 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1157 transitions. Word has length 108 [2022-07-20 22:36:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:14,589 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 1157 transitions. [2022-07-20 22:36:14,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-20 22:36:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1157 transitions. [2022-07-20 22:36:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:14,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:14,591 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:14,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-20 22:36:14,591 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1379060519, now seen corresponding path program 1 times [2022-07-20 22:36:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:14,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791537784] [2022-07-20 22:36:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:14,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:14,729 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:36:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791537784] [2022-07-20 22:36:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791537784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:14,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:14,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:14,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614159483] [2022-07-20 22:36:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:14,732 INFO L87 Difference]: Start difference. First operand 747 states and 1157 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-20 22:36:16,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:18,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:18,853 INFO L93 Difference]: Finished difference Result 1598 states and 2461 transitions. [2022-07-20 22:36:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:18,856 INFO L225 Difference]: With dead ends: 1598 [2022-07-20 22:36:18,856 INFO L226 Difference]: Without dead ends: 861 [2022-07-20 22:36:18,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:18,857 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 61 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:18,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 518 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 221 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2022-07-20 22:36:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-07-20 22:36:18,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 779. [2022-07-20 22:36:18,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 1.5539845758354756) internal successors, (1209), 778 states have internal predecessors, (1209), 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) [2022-07-20 22:36:18,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1209 transitions. [2022-07-20 22:36:18,871 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1209 transitions. Word has length 108 [2022-07-20 22:36:18,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:18,871 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1209 transitions. [2022-07-20 22:36:18,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2022-07-20 22:36:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1209 transitions. [2022-07-20 22:36:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:18,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:18,873 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:36:18,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-20 22:36:18,873 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:18,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1237053953, now seen corresponding path program 1 times [2022-07-20 22:36:18,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:18,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494736762] [2022-07-20 22:36:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:18,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:19,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:19,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494736762] [2022-07-20 22:36:19,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494736762] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:19,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:19,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516547180] [2022-07-20 22:36:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:19,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:19,026 INFO L87 Difference]: Start difference. First operand 779 states and 1209 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:21,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:21,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:21,273 INFO L93 Difference]: Finished difference Result 1707 states and 2603 transitions. [2022-07-20 22:36:21,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:21,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:21,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:21,276 INFO L225 Difference]: With dead ends: 1707 [2022-07-20 22:36:21,276 INFO L226 Difference]: Without dead ends: 938 [2022-07-20 22:36:21,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:21,277 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:21,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 264 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-07-20 22:36:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 779. [2022-07-20 22:36:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 778 states have (on average 1.5359897172236503) internal successors, (1195), 778 states have internal predecessors, (1195), 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) [2022-07-20 22:36:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1195 transitions. [2022-07-20 22:36:21,333 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1195 transitions. Word has length 108 [2022-07-20 22:36:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:21,333 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1195 transitions. [2022-07-20 22:36:21,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1195 transitions. [2022-07-20 22:36:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-20 22:36:21,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:21,335 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:21,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-20 22:36:21,335 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash 239306047, now seen corresponding path program 1 times [2022-07-20 22:36:21,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280468312] [2022-07-20 22:36:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:21,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:21,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280468312] [2022-07-20 22:36:21,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280468312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:21,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:21,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536939524] [2022-07-20 22:36:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:21,447 INFO L87 Difference]: Start difference. First operand 779 states and 1195 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:23,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:23,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:23,455 INFO L93 Difference]: Finished difference Result 1489 states and 2259 transitions. [2022-07-20 22:36:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:23,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-20 22:36:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:23,458 INFO L225 Difference]: With dead ends: 1489 [2022-07-20 22:36:23,458 INFO L226 Difference]: Without dead ends: 993 [2022-07-20 22:36:23,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:23,459 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 107 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 474 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-20 22:36:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-07-20 22:36:23,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 782. [2022-07-20 22:36:23,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.5236875800256082) internal successors, (1190), 781 states have internal predecessors, (1190), 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) [2022-07-20 22:36:23,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1190 transitions. [2022-07-20 22:36:23,490 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1190 transitions. Word has length 108 [2022-07-20 22:36:23,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:23,490 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1190 transitions. [2022-07-20 22:36:23,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-20 22:36:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1190 transitions. [2022-07-20 22:36:23,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-20 22:36:23,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:23,492 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-07-20 22:36:23,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-20 22:36:23,492 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:23,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1494959612, now seen corresponding path program 1 times [2022-07-20 22:36:23,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:23,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839134578] [2022-07-20 22:36:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:23,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839134578] [2022-07-20 22:36:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839134578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:23,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:23,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:23,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932403356] [2022-07-20 22:36:23,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:23,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:23,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:23,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:23,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:23,609 INFO L87 Difference]: Start difference. First operand 782 states and 1190 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-20 22:36:25,623 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:25,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:25,885 INFO L93 Difference]: Finished difference Result 1713 states and 2565 transitions. [2022-07-20 22:36:25,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:25,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-20 22:36:25,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:25,890 INFO L225 Difference]: With dead ends: 1713 [2022-07-20 22:36:25,890 INFO L226 Difference]: Without dead ends: 941 [2022-07-20 22:36:25,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:25,900 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 112 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:25,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 268 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:25,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-07-20 22:36:25,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 782. [2022-07-20 22:36:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 781 states have (on average 1.503201024327785) internal successors, (1174), 781 states have internal predecessors, (1174), 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) [2022-07-20 22:36:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1174 transitions. [2022-07-20 22:36:25,945 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1174 transitions. Word has length 109 [2022-07-20 22:36:25,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:25,945 INFO L495 AbstractCegarLoop]: Abstraction has 782 states and 1174 transitions. [2022-07-20 22:36:25,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 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) [2022-07-20 22:36:25,946 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1174 transitions. [2022-07-20 22:36:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-20 22:36:25,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:25,947 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-20 22:36:25,947 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:25,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1195640152, now seen corresponding path program 1 times [2022-07-20 22:36:25,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:25,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70221391] [2022-07-20 22:36:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:25,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:36:26,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:26,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70221391] [2022-07-20 22:36:26,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70221391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:26,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:26,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974815153] [2022-07-20 22:36:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:26,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:26,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:26,064 INFO L87 Difference]: Start difference. First operand 782 states and 1174 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-20 22:36:28,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:28,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:28,342 INFO L93 Difference]: Finished difference Result 1713 states and 2533 transitions. [2022-07-20 22:36:28,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:28,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-20 22:36:28,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:28,345 INFO L225 Difference]: With dead ends: 1713 [2022-07-20 22:36:28,345 INFO L226 Difference]: Without dead ends: 941 [2022-07-20 22:36:28,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:28,349 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 87 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:28,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 264 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 209 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:36:28,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-07-20 22:36:28,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 788. [2022-07-20 22:36:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.5031766200762389) internal successors, (1183), 787 states have internal predecessors, (1183), 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) [2022-07-20 22:36:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1183 transitions. [2022-07-20 22:36:28,365 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1183 transitions. Word has length 109 [2022-07-20 22:36:28,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:28,365 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1183 transitions. [2022-07-20 22:36:28,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2022-07-20 22:36:28,365 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1183 transitions. [2022-07-20 22:36:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 22:36:28,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:28,368 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:28,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-20 22:36:28,368 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1791034879, now seen corresponding path program 1 times [2022-07-20 22:36:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092523982] [2022-07-20 22:36:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-20 22:36:28,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:28,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092523982] [2022-07-20 22:36:28,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092523982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:28,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:28,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:28,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856572223] [2022-07-20 22:36:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:28,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:28,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:28,482 INFO L87 Difference]: Start difference. First operand 788 states and 1183 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:30,495 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:30,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:30,775 INFO L93 Difference]: Finished difference Result 1719 states and 2539 transitions. [2022-07-20 22:36:30,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:30,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-20 22:36:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:30,778 INFO L225 Difference]: With dead ends: 1719 [2022-07-20 22:36:30,779 INFO L226 Difference]: Without dead ends: 941 [2022-07-20 22:36:30,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:30,780 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 105 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:30,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 272 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 211 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-20 22:36:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-07-20 22:36:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 788. [2022-07-20 22:36:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.4891994917407878) internal successors, (1172), 787 states have internal predecessors, (1172), 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) [2022-07-20 22:36:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1172 transitions. [2022-07-20 22:36:30,805 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1172 transitions. Word has length 110 [2022-07-20 22:36:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:30,805 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1172 transitions. [2022-07-20 22:36:30,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1172 transitions. [2022-07-20 22:36:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 22:36:30,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:30,807 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 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, 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] [2022-07-20 22:36:30,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-20 22:36:30,807 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:30,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1059618658, now seen corresponding path program 1 times [2022-07-20 22:36:30,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:30,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732293025] [2022-07-20 22:36:30,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:30,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-20 22:36:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:30,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732293025] [2022-07-20 22:36:30,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732293025] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:30,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:30,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 22:36:30,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181647337] [2022-07-20 22:36:30,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 22:36:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:30,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 22:36:30,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 22:36:30,966 INFO L87 Difference]: Start difference. First operand 788 states and 1172 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-07-20 22:36:32,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:33,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:33,205 INFO L93 Difference]: Finished difference Result 1710 states and 2505 transitions. [2022-07-20 22:36:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-20 22:36:33,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-20 22:36:33,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:33,208 INFO L225 Difference]: With dead ends: 1710 [2022-07-20 22:36:33,208 INFO L226 Difference]: Without dead ends: 929 [2022-07-20 22:36:33,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 22:36:33,210 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 83 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:33,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 270 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 203 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-20 22:36:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-07-20 22:36:33,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 794. [2022-07-20 22:36:33,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 793 states have (on average 1.489281210592686) internal successors, (1181), 793 states have internal predecessors, (1181), 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) [2022-07-20 22:36:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1181 transitions. [2022-07-20 22:36:33,231 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1181 transitions. Word has length 110 [2022-07-20 22:36:33,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:33,232 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1181 transitions. [2022-07-20 22:36:33,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2022-07-20 22:36:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1181 transitions. [2022-07-20 22:36:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-20 22:36:33,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:33,234 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:33,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-20 22:36:33,234 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:33,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2086535811, now seen corresponding path program 1 times [2022-07-20 22:36:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:33,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059168398] [2022-07-20 22:36:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-20 22:36:33,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 22:36:33,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059168398] [2022-07-20 22:36:33,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059168398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:33,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:33,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:36:33,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325800778] [2022-07-20 22:36:33,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:33,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:36:33,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 22:36:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:36:33,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:33,381 INFO L87 Difference]: Start difference. First operand 794 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:35,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:35,426 INFO L93 Difference]: Finished difference Result 1578 states and 2354 transitions. [2022-07-20 22:36:35,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:36:35,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-20 22:36:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:35,429 INFO L225 Difference]: With dead ends: 1578 [2022-07-20 22:36:35,429 INFO L226 Difference]: Without dead ends: 1074 [2022-07-20 22:36:35,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:35,431 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 123 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:35,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 468 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2022-07-20 22:36:35,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-07-20 22:36:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1074. [2022-07-20 22:36:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 1073 states have (on average 1.4874184529356944) internal successors, (1596), 1073 states have internal predecessors, (1596), 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) [2022-07-20 22:36:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1596 transitions. [2022-07-20 22:36:35,450 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1596 transitions. Word has length 110 [2022-07-20 22:36:35,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:35,450 INFO L495 AbstractCegarLoop]: Abstraction has 1074 states and 1596 transitions. [2022-07-20 22:36:35,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1596 transitions. [2022-07-20 22:36:35,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 22:36:35,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:35,453 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:35,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-20 22:36:35,453 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:35,453 INFO L85 PathProgramCache]: Analyzing trace with hash 797599730, now seen corresponding path program 1 times [2022-07-20 22:36:35,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 22:36:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732459119] [2022-07-20 22:36:35,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:35,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 22:36:36,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 22:36:36,202 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-20 22:36:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-20 22:36:36,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-20 22:36:36,498 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-20 22:36:36,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-20 22:36:36,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-20 22:36:36,505 INFO L356 BasicCegarLoop]: Path program histogram: [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] [2022-07-20 22:36:36,508 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-20 22:36:36,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:36:36 BoogieIcfgContainer [2022-07-20 22:36:36,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-20 22:36:36,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-20 22:36:36,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-20 22:36:36,593 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-20 22:36:36,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:35:16" (3/4) ... [2022-07-20 22:36:36,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-20 22:36:36,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-20 22:36:36,598 INFO L158 Benchmark]: Toolchain (without parser) took 83221.16ms. Allocated memory was 62.9MB in the beginning and 218.1MB in the end (delta: 155.2MB). Free memory was 46.2MB in the beginning and 58.1MB in the end (delta: -11.9MB). Peak memory consumption was 142.1MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,598 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 50.3MB. Free memory was 31.2MB in the beginning and 31.2MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 22:36:36,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.77ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 40.2MB in the end (delta: 5.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.38ms. Allocated memory is still 62.9MB. Free memory was 40.2MB in the beginning and 35.5MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,600 INFO L158 Benchmark]: Boogie Preprocessor took 81.57ms. Allocated memory is still 62.9MB. Free memory was 35.5MB in the beginning and 28.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,602 INFO L158 Benchmark]: RCFGBuilder took 2895.16ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 28.6MB in the beginning and 48.5MB in the end (delta: -19.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,603 INFO L158 Benchmark]: TraceAbstraction took 79684.97ms. Allocated memory was 75.5MB in the beginning and 218.1MB in the end (delta: 142.6MB). Free memory was 48.0MB in the beginning and 58.1MB in the end (delta: -10.0MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. [2022-07-20 22:36:36,603 INFO L158 Benchmark]: Witness Printer took 4.50ms. Allocated memory is still 218.1MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 22:36:36,603 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 50.3MB. Free memory was 31.2MB in the beginning and 31.2MB in the end (delta: 44.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.77ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 40.2MB in the end (delta: 5.8MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.38ms. Allocated memory is still 62.9MB. Free memory was 40.2MB in the beginning and 35.5MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.57ms. Allocated memory is still 62.9MB. Free memory was 35.5MB in the beginning and 28.9MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 2895.16ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 28.6MB in the beginning and 48.5MB in the end (delta: -19.8MB). Peak memory consumption was 15.6MB. Max. memory is 16.1GB. * TraceAbstraction took 79684.97ms. Allocated memory was 75.5MB in the beginning and 218.1MB in the end (delta: 142.6MB). Free memory was 48.0MB in the beginning and 58.1MB in the end (delta: -10.0MB). Peak memory consumption was 143.5MB. Max. memory is 16.1GB. * Witness Printer took 4.50ms. Allocated memory is still 218.1MB. Free memory is still 58.1MB. There was no memory consumed. 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 - UnprovableResult [Line: 1665]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1356. Possible FailurePath: [L1054] static int init = 1; [L1055] static SSL_METHOD SSLv3_client_data ; VAL [init=1, SSLv3_client_data={4:0}] [L1077] SSL *s = (SSL*)malloc(sizeof(SSL)) ; [L1081] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1082] s->ctx = malloc(sizeof(SSL_CTX)) [L1083] s->session = malloc(sizeof(SSL_SESSION)) [L1084] s->state = 12292 [L1085] s->version = __VERIFIER_nondet_int() [L1087] s->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1088] EXPR s->ctx [L1088] (s->ctx)->info_callback = (void (*)()) __VERIFIER_nondet_ulong() [L1089] s->init_buf = (BUF_MEM *)__VERIFIER_nondet_ulong() [L1090] s->bbio = (BIO *) __VERIFIER_nondet_ulong() [L1091] s->wbio = (BIO *) __VERIFIER_nondet_ulong() [L1092] EXPR s->s3 [L1092] (s->s3)->flags = __VERIFIER_nondet_long() [L1093] EXPR s->s3 [L1093] (s->s3)->tmp.cert_req = __VERIFIER_nondet_int() [L1094] EXPR s->s3 [L1094] (s->s3)->tmp.new_cipher = malloc(sizeof(struct ssl_cipher_st)) [L1095] EXPR s->s3 [L1095] EXPR (s->s3)->tmp.new_cipher [L1095] ((s->s3)->tmp.new_cipher)->algorithms = __VERIFIER_nondet_ulong() [L1096] EXPR s->s3 [L1096] (s->s3)->tmp.next_state = __VERIFIER_nondet_int() [L1098] CALL ssl3_connect(s) [L1104] BUF_MEM *buf ; [L1105] unsigned long tmp ; [L1106] unsigned long l ; [L1107] long num1 ; [L1108] void (*cb)() ; [L1109] int ret ; [L1110] int new_state ; [L1111] int state ; [L1112] int skip ; [L1113] int tmp___1 = __VERIFIER_nondet_int() ; [L1114] int tmp___2 = __VERIFIER_nondet_int() ; [L1115] int tmp___3 = __VERIFIER_nondet_int() ; [L1116] int tmp___4 = __VERIFIER_nondet_int() ; [L1117] int tmp___5 = __VERIFIER_nondet_int() ; [L1118] int tmp___6 = __VERIFIER_nondet_int() ; [L1119] int tmp___7 = __VERIFIER_nondet_int() ; [L1120] int tmp___8 = __VERIFIER_nondet_int() ; [L1121] long tmp___9 = __VERIFIER_nondet_long() ; [L1122] int blastFlag ; [L1125] blastFlag = 0 [L1126] s->hit=__VERIFIER_nondet_int () [L1127] s->state = 12292 [L1128] tmp = __VERIFIER_nondet_int() [L1129] cb = (void (*)())((void *)0) [L1130] ret = -1 [L1131] skip = 0 [L1132] EXPR s->info_callback VAL [={0:0}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->info_callback={0:-2147483648}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1132] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1133] EXPR s->info_callback [L1133] cb = s->info_callback [L1141] EXPR s->in_handshake [L1141] s->in_handshake += 1 [L1142] COND FALSE !(tmp___1 & 12288) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=12292, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND TRUE s->state == 12292 [L1258] s->new_session = 1 [L1259] s->state = 4096 [L1260] EXPR s->ctx [L1260] EXPR (s->ctx)->stats.sess_connect_renegotiate [L1260] (s->ctx)->stats.sess_connect_renegotiate += 1 [L1265] s->server = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1266] COND TRUE (unsigned long )cb != (unsigned long )((void *)0) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1271] EXPR s->version VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->version=-6, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1271] COND FALSE !((s->version & 65280) != 768) [L1277] s->type = 4096 [L1278] EXPR s->init_buf VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->init_buf={0:1}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1278] COND FALSE !((unsigned long )s->init_buf == (unsigned long )((void *)0)) [L1296] COND FALSE !(! tmp___4) VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1302] COND FALSE !(! tmp___5) [L1308] s->state = 4368 [L1309] EXPR s->ctx [L1309] EXPR (s->ctx)->stats.sess_connect [L1309] (s->ctx)->stats.sess_connect += 1 [L1310] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967336, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=12292, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=0, init=1, ret=-1, s={-8:0}, s={-8:0}, s->state=4368, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND TRUE s->state == 4368 [L1314] s->shutdown = 0 [L1315] ret = __VERIFIER_nondet_int() [L1316] COND TRUE blastFlag == 0 [L1317] blastFlag = 1 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1321] COND FALSE !(ret <= 0) [L1326] s->state = 4384 [L1327] s->init_num = 0 [L1328] EXPR s->bbio [L1328] EXPR s->wbio VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->bbio={0:11}, s->wbio={0:-13}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1328] COND TRUE (unsigned long )s->bbio != (unsigned long )s->wbio [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967336, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4368, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=1, init=1, ret=13, s={-8:0}, s={-8:0}, s->state=4384, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND TRUE s->state == 4384 [L1336] ret = __VERIFIER_nondet_int() [L1337] COND TRUE blastFlag == 1 [L1338] blastFlag = 2 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1342] COND FALSE !(ret <= 0) [L1347] s->hit VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->hit=0, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1347] COND FALSE !(s->hit) [L1350] s->state = 4400 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1352] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967336, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4384, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4400, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND TRUE s->state == 4400 [L1356] EXPR s->s3 [L1356] EXPR (s->s3)->tmp.new_cipher [L1356] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [={0:-2147483648}, ((s->s3)->tmp.new_cipher)->algorithms=4294967345, (s->s3)->tmp.new_cipher={-7:0}, blastFlag=2, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1356] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1359] ret = __VERIFIER_nondet_int() [L1360] COND TRUE blastFlag == 2 [L1361] blastFlag = 3 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1369] COND FALSE !(ret <= 0) VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1375] s->state = 4416 [L1376] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967336, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4400, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND FALSE !(s->state == 4400) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1185] COND FALSE !(s->state == 4401) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=3, init=1, ret=18, s={-8:0}, s={-8:0}, s->state=4416, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1188] COND TRUE s->state == 4416 [L1380] ret = __VERIFIER_nondet_int() [L1381] COND TRUE blastFlag == 3 [L1382] blastFlag = 4 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1386] COND FALSE !(ret <= 0) [L1391] s->state = 4432 [L1392] s->init_num = 0 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1393] COND FALSE !(! tmp___6) VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] EXPR s->s3 [L1624] EXPR (s->s3)->tmp.reuse_message VAL [={0:-2147483648}, (s->s3)->tmp.reuse_message=4294967336, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->s3={-2:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1624] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1653] skip = 0 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1152] COND TRUE 1 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4416, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1154] EXPR s->state [L1154] state = s->state [L1155] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1155] COND FALSE !(s->state == 12292) [L1158] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1158] COND FALSE !(s->state == 16384) [L1161] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1161] COND FALSE !(s->state == 4096) [L1164] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1164] COND FALSE !(s->state == 20480) [L1167] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1167] COND FALSE !(s->state == 4099) [L1170] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1170] COND FALSE !(s->state == 4368) [L1173] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1173] COND FALSE !(s->state == 4369) [L1176] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1176] COND FALSE !(s->state == 4384) [L1179] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1179] COND FALSE !(s->state == 4385) [L1182] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1182] COND FALSE !(s->state == 4400) [L1185] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1185] COND FALSE !(s->state == 4401) [L1188] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1188] COND FALSE !(s->state == 4416) [L1191] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1191] COND FALSE !(s->state == 4417) [L1194] EXPR s->state VAL [={0:-2147483648}, blastFlag=4, init=1, ret=1, s={-8:0}, s={-8:0}, s->state=4432, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1194] COND TRUE s->state == 4432 [L1402] ret = __VERIFIER_nondet_int() [L1403] COND TRUE blastFlag == 4 VAL [={0:-2147483648}, blastFlag=4, init=1, ret=0, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] [L1665] reach_error() VAL [={0:-2147483648}, blastFlag=4, init=1, ret=0, s={-8:0}, s={-8:0}, skip=0, SSLv3_client_data={4:0}, state=4432, tmp=0, tmp___1=1, tmp___2=0, tmp___3=0, tmp___4=1, tmp___5=1, tmp___6=1, tmp___7=0, tmp___8=0, tmp___9=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 79.5s, OverallIterations: 27, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 73.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 mSolverCounterUnknown, 2438 SdHoareTripleChecker+Valid, 72.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2438 mSDsluCounter, 10164 SdHoareTripleChecker+Invalid, 71.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5840 mSDsCounter, 627 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4737 IncrementalHoareTripleChecker+Invalid, 5395 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 627 mSolverCounterUnsat, 4324 mSDtfsCounter, 4737 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1074occurred in iteration=26, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 26 MinimizatonAttempts, 3345 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 2554 NumberOfCodeBlocks, 2554 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2416 ConstructedInterpolants, 0 QuantifiedInterpolants, 6030 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 2491/2491 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-20 22:36:36,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/openssl/s3_clnt.blast.04.i.cil-1.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 253b2130a235408df8c2a581facc1d40316361da7beeb584c737673c98999cc2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 22:36:38,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 22:36:38,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 22:36:38,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 22:36:38,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 22:36:38,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 22:36:38,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 22:36:38,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 22:36:38,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 22:36:38,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 22:36:38,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 22:36:38,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 22:36:38,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 22:36:38,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 22:36:38,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 22:36:38,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 22:36:38,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 22:36:38,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 22:36:38,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 22:36:38,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 22:36:38,375 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 22:36:38,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 22:36:38,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 22:36:38,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 22:36:38,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 22:36:38,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 22:36:38,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 22:36:38,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 22:36:38,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 22:36:38,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 22:36:38,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 22:36:38,385 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 22:36:38,386 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 22:36:38,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 22:36:38,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 22:36:38,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 22:36:38,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 22:36:38,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 22:36:38,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 22:36:38,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 22:36:38,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 22:36:38,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 22:36:38,392 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-20 22:36:38,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 22:36:38,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 22:36:38,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 22:36:38,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 22:36:38,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 22:36:38,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 22:36:38,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 22:36:38,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 22:36:38,423 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 22:36:38,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 22:36:38,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 22:36:38,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 22:36:38,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 22:36:38,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 22:36:38,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 22:36:38,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:36:38,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 22:36:38,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 22:36:38,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 22:36:38,427 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 22:36:38,427 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 22:36:38,427 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 22:36:38,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 22:36:38,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 22:36:38,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 22:36:38,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 253b2130a235408df8c2a581facc1d40316361da7beeb584c737673c98999cc2 [2022-07-20 22:36:38,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 22:36:38,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 22:36:38,775 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 22:36:38,776 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 22:36:38,776 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 22:36:38,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:36:38,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53494b7b6/6764eb627b8844408a6ddd198625e705/FLAG5a8570c35 [2022-07-20 22:36:39,269 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 22:36:39,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:36:39,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53494b7b6/6764eb627b8844408a6ddd198625e705/FLAG5a8570c35 [2022-07-20 22:36:39,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53494b7b6/6764eb627b8844408a6ddd198625e705 [2022-07-20 22:36:39,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 22:36:39,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 22:36:39,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 22:36:39,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 22:36:39,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 22:36:39,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9f54eb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39, skipping insertion in model container [2022-07-20 22:36:39,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 22:36:39,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:36:39,594 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/openssl/s3_clnt.blast.04.i.cil-1.c[65405,65418] [2022-07-20 22:36:39,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:36:39,611 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 22:36:39,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 22:36:39,678 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/openssl/s3_clnt.blast.04.i.cil-1.c[65405,65418] [2022-07-20 22:36:39,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:36:39,694 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 22:36:39,782 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/openssl/s3_clnt.blast.04.i.cil-1.c[65405,65418] [2022-07-20 22:36:39,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 22:36:39,802 INFO L208 MainTranslator]: Completed translation [2022-07-20 22:36:39,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39 WrapperNode [2022-07-20 22:36:39,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 22:36:39,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 22:36:39,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 22:36:39,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 22:36:39,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,882 INFO L137 Inliner]: procedures = 35, calls = 217, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 689 [2022-07-20 22:36:39,887 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 22:36:39,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 22:36:39,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 22:36:39,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 22:36:39,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,968 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 22:36:39,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 22:36:39,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 22:36:39,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 22:36:39,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (1/1) ... [2022-07-20 22:36:39,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 22:36:39,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 22:36:39,992 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) [2022-07-20 22:36:40,010 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 [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 22:36:40,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 22:36:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 22:36:40,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 22:36:40,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 22:36:40,120 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 22:36:40,121 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 22:36:40,131 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-20 22:36:46,422 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2022-07-20 22:36:46,422 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2022-07-20 22:36:46,423 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 22:36:46,427 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 22:36:46,427 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 22:36:46,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:36:46 BoogieIcfgContainer [2022-07-20 22:36:46,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 22:36:46,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 22:36:46,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 22:36:46,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 22:36:46,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:36:39" (1/3) ... [2022-07-20 22:36:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:36:46, skipping insertion in model container [2022-07-20 22:36:46,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:36:39" (2/3) ... [2022-07-20 22:36:46,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cae650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:36:46, skipping insertion in model container [2022-07-20 22:36:46,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:36:46" (3/3) ... [2022-07-20 22:36:46,434 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt.blast.04.i.cil-1.c [2022-07-20 22:36:46,443 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 22:36:46,443 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 22:36:46,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 22:36:46,500 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4ec13966, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4825ae0 [2022-07-20 22:36:46,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 22:36:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 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) [2022-07-20 22:36:46,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-20 22:36:46,513 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:46,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:46,514 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:46,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:46,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695037, now seen corresponding path program 1 times [2022-07-20 22:36:46,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 22:36:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000616106] [2022-07-20 22:36:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:46,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 22:36:46,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 22:36:46,534 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) [2022-07-20 22:36:46,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 22:36:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:36:47,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:36:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:36:47,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:36:47,346 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 22:36:47,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000616106] [2022-07-20 22:36:47,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000616106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:47,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:47,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:36:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139301088] [2022-07-20 22:36:47,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:47,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:36:47,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 22:36:47,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:36:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:47,370 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7086614173228347) internal successors, (217), 128 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-20 22:36:47,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:47,452 INFO L93 Difference]: Finished difference Result 369 states and 623 transitions. [2022-07-20 22:36:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:36:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-20 22:36:47,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:47,460 INFO L225 Difference]: With dead ends: 369 [2022-07-20 22:36:47,461 INFO L226 Difference]: Without dead ends: 213 [2022-07-20 22:36:47,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:47,465 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 180 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:47,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 400 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 22:36:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-07-20 22:36:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-07-20 22:36:47,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4952830188679245) internal successors, (317), 212 states have internal predecessors, (317), 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) [2022-07-20 22:36:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 317 transitions. [2022-07-20 22:36:47,497 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 317 transitions. Word has length 24 [2022-07-20 22:36:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:47,498 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 317 transitions. [2022-07-20 22:36:47,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-07-20 22:36:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 317 transitions. [2022-07-20 22:36:47,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 22:36:47,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:47,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-07-20 22:36:47,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 22:36:47,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 22:36:47,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:47,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:47,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1192110763, now seen corresponding path program 1 times [2022-07-20 22:36:47,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 22:36:47,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781815419] [2022-07-20 22:36:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:47,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 22:36:47,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 22:36:47,722 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) [2022-07-20 22:36:47,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 22:36:48,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:48,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 972 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:36:48,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:36:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 22:36:48,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:36:48,504 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 22:36:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781815419] [2022-07-20 22:36:48,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781815419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:48,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:48,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:36:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753792211] [2022-07-20 22:36:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:48,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:36:48,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 22:36:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:36:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:48,507 INFO L87 Difference]: Start difference. First operand 213 states and 317 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-07-20 22:36:50,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:50,594 INFO L93 Difference]: Finished difference Result 418 states and 628 transitions. [2022-07-20 22:36:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:36:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-20 22:36:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:50,596 INFO L225 Difference]: With dead ends: 418 [2022-07-20 22:36:50,596 INFO L226 Difference]: Without dead ends: 313 [2022-07-20 22:36:50,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:50,597 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 124 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:50,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 461 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 22:36:50,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-07-20 22:36:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-07-20 22:36:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.4871794871794872) internal successors, (464), 312 states have internal predecessors, (464), 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) [2022-07-20 22:36:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 464 transitions. [2022-07-20 22:36:50,609 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 464 transitions. Word has length 39 [2022-07-20 22:36:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:50,623 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 464 transitions. [2022-07-20 22:36:50,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2022-07-20 22:36:50,624 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 464 transitions. [2022-07-20 22:36:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-20 22:36:50,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:50,626 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1] [2022-07-20 22:36:50,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 22:36:50,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 22:36:50,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:50,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1701754597, now seen corresponding path program 1 times [2022-07-20 22:36:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 22:36:50,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483627722] [2022-07-20 22:36:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:50,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 22:36:50,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 22:36:50,830 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) [2022-07-20 22:36:50,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 22:36:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:51,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:36:51,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:36:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-20 22:36:51,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:36:51,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 22:36:51,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483627722] [2022-07-20 22:36:51,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483627722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:51,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:51,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:36:51,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46428319] [2022-07-20 22:36:51,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:51,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:36:51,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 22:36:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:36:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:51,648 INFO L87 Difference]: Start difference. First operand 313 states and 464 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-07-20 22:36:53,665 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:53,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:53,738 INFO L93 Difference]: Finished difference Result 619 states and 923 transitions. [2022-07-20 22:36:53,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:36:53,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-20 22:36:53,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:53,741 INFO L225 Difference]: With dead ends: 619 [2022-07-20 22:36:53,741 INFO L226 Difference]: Without dead ends: 414 [2022-07-20 22:36:53,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:53,743 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 125 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:53,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 468 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 22:36:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-07-20 22:36:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-07-20 22:36:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.4842615012106537) internal successors, (613), 413 states have internal predecessors, (613), 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) [2022-07-20 22:36:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 613 transitions. [2022-07-20 22:36:53,779 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 613 transitions. Word has length 57 [2022-07-20 22:36:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:53,779 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 613 transitions. [2022-07-20 22:36:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-07-20 22:36:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 613 transitions. [2022-07-20 22:36:53,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-20 22:36:53,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:53,785 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:53,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 22:36:54,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 22:36:54,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:54,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:54,004 INFO L85 PathProgramCache]: Analyzing trace with hash -998738617, now seen corresponding path program 1 times [2022-07-20 22:36:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 22:36:54,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414944273] [2022-07-20 22:36:54,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:54,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 22:36:54,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 22:36:54,006 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 22:36:54,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 22:36:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:54,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 22:36:54,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:36:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-20 22:36:54,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 22:36:54,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 22:36:54,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414944273] [2022-07-20 22:36:54,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414944273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 22:36:54,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 22:36:54,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 22:36:54,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554883506] [2022-07-20 22:36:54,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 22:36:54,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 22:36:54,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 22:36:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 22:36:54,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:54,887 INFO L87 Difference]: Start difference. First operand 414 states and 613 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:56,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 22:36:56,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 22:36:56,973 INFO L93 Difference]: Finished difference Result 821 states and 1222 transitions. [2022-07-20 22:36:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 22:36:56,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-20 22:36:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 22:36:56,976 INFO L225 Difference]: With dead ends: 821 [2022-07-20 22:36:56,976 INFO L226 Difference]: Without dead ends: 515 [2022-07-20 22:36:56,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 22:36:56,977 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 126 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-20 22:36:56,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 467 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-07-20 22:36:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-20 22:36:56,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2022-07-20 22:36:56,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.482490272373541) internal successors, (762), 514 states have internal predecessors, (762), 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) [2022-07-20 22:36:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 762 transitions. [2022-07-20 22:36:56,986 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 762 transitions. Word has length 77 [2022-07-20 22:36:56,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 22:36:56,986 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 762 transitions. [2022-07-20 22:36:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-20 22:36:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 762 transitions. [2022-07-20 22:36:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-20 22:36:56,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 22:36:56,990 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-20 22:36:57,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 22:36:57,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 22:36:57,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 22:36:57,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 22:36:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 465583256, now seen corresponding path program 1 times [2022-07-20 22:36:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 22:36:57,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817175685] [2022-07-20 22:36:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 22:36:57,212 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 22:36:57,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 22:36:57,213 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) [2022-07-20 22:36:57,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 22:36:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 22:36:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 22:36:58,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 22:37:00,179 INFO L356 Elim1Store]: treesize reduction 32, result has 78.5 percent of original size [2022-07-20 22:37:00,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 1482 treesize of output 1090 [2022-07-20 22:37:14,799 WARN L233 SmtUtils]: Spent 14.55s on a formula simplification. DAG size of input: 205 DAG size of output: 93 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-07-20 22:37:14,800 INFO L356 Elim1Store]: treesize reduction 1374, result has 25.4 percent of original size [2022-07-20 22:37:14,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 9 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 4790 treesize of output 4750 [2022-07-20 22:37:14,868 INFO L390 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 4345 treesize of output 3031 [2022-07-20 22:37:15,494 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 22:37:15,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2466 treesize of output 1710 [2022-07-20 22:37:16,243 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 22:37:16,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 968 treesize of output 891 [2022-07-20 22:37:16,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:16,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:17,451 INFO L244 Elim1Store]: Index analysis took 930 ms [2022-07-20 22:37:18,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 87 [2022-07-20 22:37:18,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:18,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:19,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:20,005 INFO L244 Elim1Store]: Index analysis took 1153 ms [2022-07-20 22:37:20,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111 [2022-07-20 22:37:21,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 22:37:21,492 INFO L244 Elim1Store]: Index analysis took 643 ms [2022-07-20 22:37:21,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 31 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 111 [2022-07-20 22:37:22,130 INFO L390 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 431 treesize of output 371 [2022-07-20 22:37:22,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2022-07-20 22:37:22,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 135 treesize of output 115