./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0217.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0217.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:49:12,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:49:12,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:49:12,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:49:12,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:49:12,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:49:12,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:49:12,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:49:12,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:49:12,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:49:12,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:49:12,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:49:12,290 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:49:12,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:49:12,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:49:12,293 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:49:12,294 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:49:12,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:49:12,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:49:12,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:49:12,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:49:12,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:49:12,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:49:12,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:49:12,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:49:12,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:49:12,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:49:12,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:49:12,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:49:12,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:49:12,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:49:12,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:49:12,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:49:12,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:49:12,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:49:12,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:49:12,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:49:12,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:49:12,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:49:12,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:49:12,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:49:12,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 05:49:12,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:49:12,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:49:12,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:49:12,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:49:12,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:49:12,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:49:12,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:49:12,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:49:12,344 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:49:12,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:49:12,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:49:12,345 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:49:12,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:49:12,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:49:12,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:49:12,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:49:12,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:49:12,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:49:12,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:49:12,347 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 163bc3b45d6f21a8e478003f84571178259b289b3d9717ecadbc4595fc507bec [2021-12-28 05:49:12,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:49:12,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:49:12,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:49:12,628 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:49:12,629 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:49:12,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0217.i [2021-12-28 05:49:12,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07002a3c/95af3c84a6a042f9a0daf9c166fbc61d/FLAG2f744d1b4 [2021-12-28 05:49:13,215 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:49:13,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0217.i [2021-12-28 05:49:13,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07002a3c/95af3c84a6a042f9a0daf9c166fbc61d/FLAG2f744d1b4 [2021-12-28 05:49:13,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07002a3c/95af3c84a6a042f9a0daf9c166fbc61d [2021-12-28 05:49:13,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:49:13,678 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:49:13,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:49:13,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:49:13,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:49:13,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:49:13" (1/1) ... [2021-12-28 05:49:13,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d7eaac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:13, skipping insertion in model container [2021-12-28 05:49:13,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:49:13" (1/1) ... [2021-12-28 05:49:13,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:49:13,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:49:14,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:49:14,052 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:49:14,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:49:14,136 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:49:14,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14 WrapperNode [2021-12-28 05:49:14,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:49:14,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:49:14,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:49:14,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:49:14,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,215 INFO L137 Inliner]: procedures = 181, calls = 47, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 218 [2021-12-28 05:49:14,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:49:14,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:49:14,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:49:14,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:49:14,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:49:14,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:49:14,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:49:14,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:49:14,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (1/1) ... [2021-12-28 05:49:14,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:49:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:14,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 05:49:14,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 05:49:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2021-12-28 05:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2021-12-28 05:49:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:49:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 05:49:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 05:49:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:49:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:49:14,479 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:49:14,480 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:49:14,789 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:49:14,794 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:49:14,794 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 05:49:14,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:49:14 BoogieIcfgContainer [2021-12-28 05:49:14,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:49:14,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:49:14,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:49:14,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:49:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:49:13" (1/3) ... [2021-12-28 05:49:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e8600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:49:14, skipping insertion in model container [2021-12-28 05:49:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:49:14" (2/3) ... [2021-12-28 05:49:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e8600d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:49:14, skipping insertion in model container [2021-12-28 05:49:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:49:14" (3/3) ... [2021-12-28 05:49:14,804 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0217.i [2021-12-28 05:49:14,810 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:49:14,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 67 error locations. [2021-12-28 05:49:14,842 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:49:14,849 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 05:49:14,849 INFO L340 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2021-12-28 05:49:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:14,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-28 05:49:14,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:14,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-28 05:49:14,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:14,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1074949738, now seen corresponding path program 1 times [2021-12-28 05:49:14,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:14,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642412606] [2021-12-28 05:49:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:14,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:15,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:15,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642412606] [2021-12-28 05:49:15,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642412606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:15,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:15,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:49:15,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468991155] [2021-12-28 05:49:15,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:15,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 05:49:15,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:15,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 05:49:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 05:49:15,048 INFO L87 Difference]: Start difference. First operand has 171 states, 100 states have (on average 1.94) internal successors, (194), 167 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:15,081 INFO L93 Difference]: Finished difference Result 171 states and 192 transitions. [2021-12-28 05:49:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 05:49:15,083 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-12-28 05:49:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:15,091 INFO L225 Difference]: With dead ends: 171 [2021-12-28 05:49:15,091 INFO L226 Difference]: Without dead ends: 169 [2021-12-28 05:49:15,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 05:49:15,096 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:15,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-28 05:49:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-12-28 05:49:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 99 states have (on average 1.878787878787879) internal successors, (186), 165 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2021-12-28 05:49:15,146 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 6 [2021-12-28 05:49:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:15,147 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2021-12-28 05:49:15,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2021-12-28 05:49:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 05:49:15,148 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:15,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:15,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:49:15,148 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr59REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:15,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317330, now seen corresponding path program 1 times [2021-12-28 05:49:15,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:15,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692855897] [2021-12-28 05:49:15,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:15,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:15,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:15,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:15,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692855897] [2021-12-28 05:49:15,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692855897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:15,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:15,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-28 05:49:15,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961144841] [2021-12-28 05:49:15,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:15,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:49:15,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:49:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:15,264 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:15,490 INFO L93 Difference]: Finished difference Result 329 states and 370 transitions. [2021-12-28 05:49:15,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:49:15,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 05:49:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:15,495 INFO L225 Difference]: With dead ends: 329 [2021-12-28 05:49:15,496 INFO L226 Difference]: Without dead ends: 329 [2021-12-28 05:49:15,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:15,497 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 171 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:15,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 249 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:15,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-28 05:49:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 233. [2021-12-28 05:49:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 160 states have (on average 1.8625) internal successors, (298), 226 states have internal predecessors, (298), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:49:15,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 306 transitions. [2021-12-28 05:49:15,527 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 306 transitions. Word has length 7 [2021-12-28 05:49:15,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:15,528 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 306 transitions. [2021-12-28 05:49:15,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,528 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 306 transitions. [2021-12-28 05:49:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 05:49:15,529 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:15,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:15,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 05:49:15,529 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317329, now seen corresponding path program 1 times [2021-12-28 05:49:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:15,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10462567] [2021-12-28 05:49:15,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:15,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:15,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:15,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10462567] [2021-12-28 05:49:15,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10462567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:15,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:15,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:49:15,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637212423] [2021-12-28 05:49:15,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:15,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:15,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:15,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:15,611 INFO L87 Difference]: Start difference. First operand 233 states and 306 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:15,740 INFO L93 Difference]: Finished difference Result 376 states and 474 transitions. [2021-12-28 05:49:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 05:49:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:15,742 INFO L225 Difference]: With dead ends: 376 [2021-12-28 05:49:15,742 INFO L226 Difference]: Without dead ends: 376 [2021-12-28 05:49:15,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:15,744 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 141 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:15,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 422 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-12-28 05:49:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 310. [2021-12-28 05:49:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.8225108225108224) internal successors, (421), 299 states have internal predecessors, (421), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:49:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2021-12-28 05:49:15,759 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 7 [2021-12-28 05:49:15,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:15,759 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2021-12-28 05:49:15,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:15,760 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2021-12-28 05:49:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 05:49:15,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:15,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:15,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 05:49:15,761 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1280317267, now seen corresponding path program 1 times [2021-12-28 05:49:15,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:15,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794787837] [2021-12-28 05:49:15,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:15,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:15,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:15,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794787837] [2021-12-28 05:49:15,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794787837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:15,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:15,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:49:15,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934836860] [2021-12-28 05:49:15,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:15,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:15,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:15,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:15,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:15,841 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:16,011 INFO L93 Difference]: Finished difference Result 375 states and 472 transitions. [2021-12-28 05:49:16,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:16,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 05:49:16,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:16,013 INFO L225 Difference]: With dead ends: 375 [2021-12-28 05:49:16,013 INFO L226 Difference]: Without dead ends: 375 [2021-12-28 05:49:16,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:16,024 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 123 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:16,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 436 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:16,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-12-28 05:49:16,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 310. [2021-12-28 05:49:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 231 states have (on average 1.8225108225108224) internal successors, (421), 299 states have internal predecessors, (421), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 05:49:16,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 437 transitions. [2021-12-28 05:49:16,041 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 437 transitions. Word has length 7 [2021-12-28 05:49:16,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:16,041 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 437 transitions. [2021-12-28 05:49:16,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,042 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 437 transitions. [2021-12-28 05:49:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:49:16,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:16,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:16,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 05:49:16,042 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:16,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:16,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1671227278, now seen corresponding path program 1 times [2021-12-28 05:49:16,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:16,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161345266] [2021-12-28 05:49:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:16,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:16,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:16,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:16,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161345266] [2021-12-28 05:49:16,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161345266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:16,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:16,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:16,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311760334] [2021-12-28 05:49:16,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:16,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:16,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:16,143 INFO L87 Difference]: Start difference. First operand 310 states and 437 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:16,319 INFO L93 Difference]: Finished difference Result 461 states and 621 transitions. [2021-12-28 05:49:16,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:16,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 05:49:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:16,322 INFO L225 Difference]: With dead ends: 461 [2021-12-28 05:49:16,322 INFO L226 Difference]: Without dead ends: 461 [2021-12-28 05:49:16,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:16,322 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 150 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:16,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 803 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-12-28 05:49:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 352. [2021-12-28 05:49:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 270 states have (on average 1.8074074074074074) internal successors, (488), 339 states have internal predecessors, (488), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 508 transitions. [2021-12-28 05:49:16,331 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 508 transitions. Word has length 10 [2021-12-28 05:49:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:16,332 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 508 transitions. [2021-12-28 05:49:16,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 508 transitions. [2021-12-28 05:49:16,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:49:16,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:16,339 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:16,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 05:49:16,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:16,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1673074320, now seen corresponding path program 1 times [2021-12-28 05:49:16,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:16,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116662458] [2021-12-28 05:49:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:16,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:16,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:16,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116662458] [2021-12-28 05:49:16,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116662458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:16,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:16,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:16,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546961245] [2021-12-28 05:49:16,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:16,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:16,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:16,460 INFO L87 Difference]: Start difference. First operand 352 states and 508 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:16,589 INFO L93 Difference]: Finished difference Result 451 states and 610 transitions. [2021-12-28 05:49:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:16,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 05:49:16,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:16,593 INFO L225 Difference]: With dead ends: 451 [2021-12-28 05:49:16,594 INFO L226 Difference]: Without dead ends: 451 [2021-12-28 05:49:16,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:16,595 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 131 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:16,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 762 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-28 05:49:16,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 351. [2021-12-28 05:49:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 269 states have (on average 1.8104089219330854) internal successors, (487), 338 states have internal predecessors, (487), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 507 transitions. [2021-12-28 05:49:16,609 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 507 transitions. Word has length 10 [2021-12-28 05:49:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:16,609 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 507 transitions. [2021-12-28 05:49:16,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,610 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 507 transitions. [2021-12-28 05:49:16,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 05:49:16,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:16,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:16,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 05:49:16,611 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:16,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:16,612 INFO L85 PathProgramCache]: Analyzing trace with hash 268436822, now seen corresponding path program 1 times [2021-12-28 05:49:16,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:16,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767937374] [2021-12-28 05:49:16,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:16,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:16,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:16,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:16,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767937374] [2021-12-28 05:49:16,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767937374] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:16,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:16,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:49:16,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763455822] [2021-12-28 05:49:16,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:16,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:49:16,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:49:16,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:16,655 INFO L87 Difference]: Start difference. First operand 351 states and 507 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:16,728 INFO L93 Difference]: Finished difference Result 406 states and 560 transitions. [2021-12-28 05:49:16,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:49:16,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-28 05:49:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:16,730 INFO L225 Difference]: With dead ends: 406 [2021-12-28 05:49:16,730 INFO L226 Difference]: Without dead ends: 399 [2021-12-28 05:49:16,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:16,730 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 70 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:16,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 287 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:16,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-12-28 05:49:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 348. [2021-12-28 05:49:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 266 states have (on average 1.8120300751879699) internal successors, (482), 335 states have internal predecessors, (482), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:16,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 502 transitions. [2021-12-28 05:49:16,737 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 502 transitions. Word has length 11 [2021-12-28 05:49:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:16,737 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 502 transitions. [2021-12-28 05:49:16,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:49:16,738 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 502 transitions. [2021-12-28 05:49:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-28 05:49:16,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:16,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:16,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 05:49:16,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:16,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1044692257, now seen corresponding path program 1 times [2021-12-28 05:49:16,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:16,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809995701] [2021-12-28 05:49:16,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:16,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:16,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:16,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809995701] [2021-12-28 05:49:16,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809995701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:16,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:16,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:16,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018445910] [2021-12-28 05:49:16,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:16,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:16,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:16,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:16,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:16,779 INFO L87 Difference]: Start difference. First operand 348 states and 502 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:16,986 INFO L93 Difference]: Finished difference Result 570 states and 734 transitions. [2021-12-28 05:49:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:16,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-28 05:49:16,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:16,988 INFO L225 Difference]: With dead ends: 570 [2021-12-28 05:49:16,988 INFO L226 Difference]: Without dead ends: 570 [2021-12-28 05:49:16,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:16,989 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 329 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:16,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 434 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-12-28 05:49:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 354. [2021-12-28 05:49:17,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 272 states have (on average 1.7941176470588236) internal successors, (488), 341 states have internal predecessors, (488), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 508 transitions. [2021-12-28 05:49:17,003 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 508 transitions. Word has length 15 [2021-12-28 05:49:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:17,004 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 508 transitions. [2021-12-28 05:49:17,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 508 transitions. [2021-12-28 05:49:17,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-28 05:49:17,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:17,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:17,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 05:49:17,013 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:17,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:17,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1044692256, now seen corresponding path program 1 times [2021-12-28 05:49:17,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:17,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453939970] [2021-12-28 05:49:17,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:17,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:17,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:17,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453939970] [2021-12-28 05:49:17,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453939970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:17,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:17,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:17,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285797767] [2021-12-28 05:49:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:17,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:17,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:17,081 INFO L87 Difference]: Start difference. First operand 354 states and 508 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:17,241 INFO L93 Difference]: Finished difference Result 408 states and 530 transitions. [2021-12-28 05:49:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:17,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-28 05:49:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:17,243 INFO L225 Difference]: With dead ends: 408 [2021-12-28 05:49:17,243 INFO L226 Difference]: Without dead ends: 408 [2021-12-28 05:49:17,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:17,244 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 197 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:17,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 445 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:17,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-28 05:49:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 354. [2021-12-28 05:49:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 272 states have (on average 1.7610294117647058) internal successors, (479), 341 states have internal predecessors, (479), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:17,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 499 transitions. [2021-12-28 05:49:17,253 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 499 transitions. Word has length 15 [2021-12-28 05:49:17,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:17,254 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 499 transitions. [2021-12-28 05:49:17,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:17,254 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 499 transitions. [2021-12-28 05:49:17,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:49:17,254 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:17,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:17,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 05:49:17,255 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:17,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:17,255 INFO L85 PathProgramCache]: Analyzing trace with hash 742849514, now seen corresponding path program 1 times [2021-12-28 05:49:17,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:17,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148894800] [2021-12-28 05:49:17,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:17,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:17,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:17,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148894800] [2021-12-28 05:49:17,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148894800] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:17,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:17,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:17,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594363430] [2021-12-28 05:49:17,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:17,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:17,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:17,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:17,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:17,366 INFO L87 Difference]: Start difference. First operand 354 states and 499 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:17,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:17,746 INFO L93 Difference]: Finished difference Result 707 states and 854 transitions. [2021-12-28 05:49:17,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:17,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:49:17,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:17,749 INFO L225 Difference]: With dead ends: 707 [2021-12-28 05:49:17,750 INFO L226 Difference]: Without dead ends: 707 [2021-12-28 05:49:17,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:17,750 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 867 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:17,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 521 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2021-12-28 05:49:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 351. [2021-12-28 05:49:17,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 273 states have (on average 1.7326007326007327) internal successors, (473), 338 states have internal predecessors, (473), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-28 05:49:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 493 transitions. [2021-12-28 05:49:17,762 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 493 transitions. Word has length 17 [2021-12-28 05:49:17,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:17,762 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 493 transitions. [2021-12-28 05:49:17,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:17,763 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 493 transitions. [2021-12-28 05:49:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:49:17,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:17,763 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:17,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 05:49:17,764 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:17,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:17,764 INFO L85 PathProgramCache]: Analyzing trace with hash 742849515, now seen corresponding path program 1 times [2021-12-28 05:49:17,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:17,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388674407] [2021-12-28 05:49:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:17,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:17,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:17,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388674407] [2021-12-28 05:49:17,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388674407] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:17,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:17,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:17,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94873713] [2021-12-28 05:49:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:17,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:49:17,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:17,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:49:17,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:17,873 INFO L87 Difference]: Start difference. First operand 351 states and 493 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:18,478 INFO L93 Difference]: Finished difference Result 766 states and 951 transitions. [2021-12-28 05:49:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:49:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:18,481 INFO L225 Difference]: With dead ends: 766 [2021-12-28 05:49:18,482 INFO L226 Difference]: Without dead ends: 766 [2021-12-28 05:49:18,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:49:18,482 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 895 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:18,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 703 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-12-28 05:49:18,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 384. [2021-12-28 05:49:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 304 states have (on average 1.7203947368421053) internal successors, (523), 370 states have internal predecessors, (523), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (14), 8 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-28 05:49:18,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 547 transitions. [2021-12-28 05:49:18,496 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 547 transitions. Word has length 17 [2021-12-28 05:49:18,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:18,496 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 547 transitions. [2021-12-28 05:49:18,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 547 transitions. [2021-12-28 05:49:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 05:49:18,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:18,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:18,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 05:49:18,498 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:18,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:18,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1064604948, now seen corresponding path program 1 times [2021-12-28 05:49:18,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:18,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239046599] [2021-12-28 05:49:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:18,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:18,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:18,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239046599] [2021-12-28 05:49:18,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239046599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:18,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:18,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12649920] [2021-12-28 05:49:18,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:18,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:18,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:18,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:18,554 INFO L87 Difference]: Start difference. First operand 384 states and 547 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:18,590 INFO L93 Difference]: Finished difference Result 614 states and 849 transitions. [2021-12-28 05:49:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-28 05:49:18,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:18,593 INFO L225 Difference]: With dead ends: 614 [2021-12-28 05:49:18,593 INFO L226 Difference]: Without dead ends: 614 [2021-12-28 05:49:18,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:18,594 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 243 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:18,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1549 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:18,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-28 05:49:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 394. [2021-12-28 05:49:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 311 states have (on average 1.7009646302250805) internal successors, (529), 379 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 559 transitions. [2021-12-28 05:49:18,605 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 559 transitions. Word has length 17 [2021-12-28 05:49:18,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:18,606 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 559 transitions. [2021-12-28 05:49:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 559 transitions. [2021-12-28 05:49:18,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 05:49:18,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:18,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:18,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 05:49:18,607 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:18,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:18,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1357040557, now seen corresponding path program 1 times [2021-12-28 05:49:18,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:18,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12410760] [2021-12-28 05:49:18,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:18,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:18,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:18,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12410760] [2021-12-28 05:49:18,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12410760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:18,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:18,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:18,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396738285] [2021-12-28 05:49:18,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:18,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:18,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:18,690 INFO L87 Difference]: Start difference. First operand 394 states and 559 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:19,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:19,236 INFO L93 Difference]: Finished difference Result 793 states and 993 transitions. [2021-12-28 05:49:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:19,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-28 05:49:19,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:19,239 INFO L225 Difference]: With dead ends: 793 [2021-12-28 05:49:19,239 INFO L226 Difference]: Without dead ends: 793 [2021-12-28 05:49:19,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:19,240 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 545 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:19,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 841 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-12-28 05:49:19,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 391. [2021-12-28 05:49:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 308 states have (on average 1.7012987012987013) internal successors, (524), 376 states have internal predecessors, (524), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 554 transitions. [2021-12-28 05:49:19,248 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 554 transitions. Word has length 18 [2021-12-28 05:49:19,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:19,248 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 554 transitions. [2021-12-28 05:49:19,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 554 transitions. [2021-12-28 05:49:19,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 05:49:19,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:19,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:19,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 05:49:19,249 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:19,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1279047357, now seen corresponding path program 1 times [2021-12-28 05:49:19,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:19,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639596932] [2021-12-28 05:49:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:19,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:19,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:19,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639596932] [2021-12-28 05:49:19,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639596932] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:19,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:19,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 05:49:19,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239842308] [2021-12-28 05:49:19,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:19,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 05:49:19,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:19,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 05:49:19,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:19,546 INFO L87 Difference]: Start difference. First operand 391 states and 554 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:20,160 INFO L93 Difference]: Finished difference Result 744 states and 1021 transitions. [2021-12-28 05:49:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 05:49:20,161 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-28 05:49:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:20,186 INFO L225 Difference]: With dead ends: 744 [2021-12-28 05:49:20,186 INFO L226 Difference]: Without dead ends: 742 [2021-12-28 05:49:20,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:49:20,187 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 523 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:20,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1862 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:20,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-12-28 05:49:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 385. [2021-12-28 05:49:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 302 states have (on average 1.6986754966887416) internal successors, (513), 370 states have internal predecessors, (513), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 9 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 543 transitions. [2021-12-28 05:49:20,198 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 543 transitions. Word has length 21 [2021-12-28 05:49:20,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:20,199 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 543 transitions. [2021-12-28 05:49:20,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,199 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 543 transitions. [2021-12-28 05:49:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-28 05:49:20,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:20,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:20,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 05:49:20,200 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:20,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2000662896, now seen corresponding path program 1 times [2021-12-28 05:49:20,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:20,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430300165] [2021-12-28 05:49:20,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:20,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:20,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:20,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430300165] [2021-12-28 05:49:20,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430300165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:20,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:20,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 05:49:20,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385809492] [2021-12-28 05:49:20,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:20,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:49:20,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:20,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:49:20,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:20,351 INFO L87 Difference]: Start difference. First operand 385 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:20,650 INFO L93 Difference]: Finished difference Result 548 states and 728 transitions. [2021-12-28 05:49:20,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:20,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-28 05:49:20,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:20,652 INFO L225 Difference]: With dead ends: 548 [2021-12-28 05:49:20,652 INFO L226 Difference]: Without dead ends: 548 [2021-12-28 05:49:20,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:49:20,652 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 217 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:20,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 951 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-12-28 05:49:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 401. [2021-12-28 05:49:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 318 states have (on average 1.6761006289308176) internal successors, (533), 384 states have internal predecessors, (533), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 563 transitions. [2021-12-28 05:49:20,660 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 563 transitions. Word has length 21 [2021-12-28 05:49:20,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:20,661 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 563 transitions. [2021-12-28 05:49:20,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 563 transitions. [2021-12-28 05:49:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 05:49:20,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:20,662 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:20,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 05:49:20,662 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:20,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1680606867, now seen corresponding path program 1 times [2021-12-28 05:49:20,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:20,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789768744] [2021-12-28 05:49:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:20,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:20,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:20,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789768744] [2021-12-28 05:49:20,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789768744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:20,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:20,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:20,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065291603] [2021-12-28 05:49:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:20,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:20,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:20,724 INFO L87 Difference]: Start difference. First operand 401 states and 563 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:20,761 INFO L93 Difference]: Finished difference Result 646 states and 894 transitions. [2021-12-28 05:49:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:20,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-28 05:49:20,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:20,764 INFO L225 Difference]: With dead ends: 646 [2021-12-28 05:49:20,764 INFO L226 Difference]: Without dead ends: 646 [2021-12-28 05:49:20,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:20,764 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 245 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:20,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 1239 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-12-28 05:49:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 403. [2021-12-28 05:49:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 320 states have (on average 1.671875) internal successors, (535), 386 states have internal predecessors, (535), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 565 transitions. [2021-12-28 05:49:20,785 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 565 transitions. Word has length 22 [2021-12-28 05:49:20,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:20,785 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 565 transitions. [2021-12-28 05:49:20,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,785 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 565 transitions. [2021-12-28 05:49:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 05:49:20,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:20,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:20,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 05:49:20,786 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:20,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:20,787 INFO L85 PathProgramCache]: Analyzing trace with hash -839353067, now seen corresponding path program 1 times [2021-12-28 05:49:20,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:20,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256757573] [2021-12-28 05:49:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:20,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:20,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:20,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256757573] [2021-12-28 05:49:20,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256757573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:20,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:20,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:20,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367487199] [2021-12-28 05:49:20,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:20,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:20,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:20,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:20,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:20,844 INFO L87 Difference]: Start difference. First operand 403 states and 565 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:20,872 INFO L93 Difference]: Finished difference Result 642 states and 886 transitions. [2021-12-28 05:49:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:20,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-28 05:49:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:20,875 INFO L225 Difference]: With dead ends: 642 [2021-12-28 05:49:20,875 INFO L226 Difference]: Without dead ends: 642 [2021-12-28 05:49:20,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:20,875 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 242 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:20,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1255 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-12-28 05:49:20,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 401. [2021-12-28 05:49:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 318 states have (on average 1.6635220125786163) internal successors, (529), 384 states have internal predecessors, (529), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 11 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 559 transitions. [2021-12-28 05:49:20,883 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 559 transitions. Word has length 22 [2021-12-28 05:49:20,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:20,883 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 559 transitions. [2021-12-28 05:49:20,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:20,883 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 559 transitions. [2021-12-28 05:49:20,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-28 05:49:20,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:20,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:20,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 05:49:20,884 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:20,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:20,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1175048242, now seen corresponding path program 1 times [2021-12-28 05:49:20,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:20,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87315805] [2021-12-28 05:49:20,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:20,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:20,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:20,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:20,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87315805] [2021-12-28 05:49:20,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87315805] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:20,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:20,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 05:49:20,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959118238] [2021-12-28 05:49:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:20,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:49:20,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:20,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:49:20,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:20,955 INFO L87 Difference]: Start difference. First operand 401 states and 559 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:21,185 INFO L93 Difference]: Finished difference Result 578 states and 779 transitions. [2021-12-28 05:49:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 05:49:21,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-12-28 05:49:21,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:21,187 INFO L225 Difference]: With dead ends: 578 [2021-12-28 05:49:21,187 INFO L226 Difference]: Without dead ends: 578 [2021-12-28 05:49:21,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-12-28 05:49:21,188 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 191 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:21,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 1270 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-12-28 05:49:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 411. [2021-12-28 05:49:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 328 states have (on average 1.649390243902439) internal successors, (541), 392 states have internal predecessors, (541), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 571 transitions. [2021-12-28 05:49:21,194 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 571 transitions. Word has length 22 [2021-12-28 05:49:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:21,195 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 571 transitions. [2021-12-28 05:49:21,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 571 transitions. [2021-12-28 05:49:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 05:49:21,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:21,195 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:49:21,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 05:49:21,195 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:21,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -796222002, now seen corresponding path program 1 times [2021-12-28 05:49:21,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:21,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889840434] [2021-12-28 05:49:21,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:21,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:21,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:21,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889840434] [2021-12-28 05:49:21,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889840434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:21,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:21,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:21,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204105296] [2021-12-28 05:49:21,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:21,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:21,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:21,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:21,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:21,228 INFO L87 Difference]: Start difference. First operand 411 states and 571 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:21,412 INFO L93 Difference]: Finished difference Result 654 states and 844 transitions. [2021-12-28 05:49:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:21,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-28 05:49:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:21,414 INFO L225 Difference]: With dead ends: 654 [2021-12-28 05:49:21,414 INFO L226 Difference]: Without dead ends: 654 [2021-12-28 05:49:21,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:21,415 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 303 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:21,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 442 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-12-28 05:49:21,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 439. [2021-12-28 05:49:21,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 356 states have (on average 1.6657303370786516) internal successors, (593), 420 states have internal predecessors, (593), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:21,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 623 transitions. [2021-12-28 05:49:21,423 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 623 transitions. Word has length 23 [2021-12-28 05:49:21,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:21,423 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 623 transitions. [2021-12-28 05:49:21,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,423 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 623 transitions. [2021-12-28 05:49:21,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 05:49:21,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:21,424 INFO L514 BasicCegarLoop]: 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] [2021-12-28 05:49:21,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 05:49:21,424 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:21,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:21,425 INFO L85 PathProgramCache]: Analyzing trace with hash -796222001, now seen corresponding path program 1 times [2021-12-28 05:49:21,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:21,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351724981] [2021-12-28 05:49:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:21,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:21,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:21,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351724981] [2021-12-28 05:49:21,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351724981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:21,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:21,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:21,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483567583] [2021-12-28 05:49:21,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:21,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:21,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:21,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:21,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:21,517 INFO L87 Difference]: Start difference. First operand 439 states and 623 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:21,714 INFO L93 Difference]: Finished difference Result 491 states and 648 transitions. [2021-12-28 05:49:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:21,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-28 05:49:21,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:21,716 INFO L225 Difference]: With dead ends: 491 [2021-12-28 05:49:21,716 INFO L226 Difference]: Without dead ends: 491 [2021-12-28 05:49:21,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:21,717 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 366 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:21,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 543 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:21,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-28 05:49:21,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 439. [2021-12-28 05:49:21,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 356 states have (on average 1.6404494382022472) internal successors, (584), 420 states have internal predecessors, (584), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:21,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 614 transitions. [2021-12-28 05:49:21,723 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 614 transitions. Word has length 23 [2021-12-28 05:49:21,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:21,724 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 614 transitions. [2021-12-28 05:49:21,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,724 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 614 transitions. [2021-12-28 05:49:21,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:49:21,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:21,724 INFO L514 BasicCegarLoop]: 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, 1] [2021-12-28 05:49:21,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 05:49:21,725 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1911985061, now seen corresponding path program 1 times [2021-12-28 05:49:21,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:21,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902162823] [2021-12-28 05:49:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:21,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:21,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:21,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902162823] [2021-12-28 05:49:21,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902162823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:21,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:21,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:21,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723955313] [2021-12-28 05:49:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:21,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:21,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:21,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:21,744 INFO L87 Difference]: Start difference. First operand 439 states and 614 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:21,760 INFO L93 Difference]: Finished difference Result 451 states and 626 transitions. [2021-12-28 05:49:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:49:21,760 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 05:49:21,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:21,762 INFO L225 Difference]: With dead ends: 451 [2021-12-28 05:49:21,762 INFO L226 Difference]: Without dead ends: 451 [2021-12-28 05:49:21,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:21,763 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 3 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:21,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 541 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-28 05:49:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 448. [2021-12-28 05:49:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 365 states have (on average 1.6246575342465754) internal successors, (593), 429 states have internal predecessors, (593), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 623 transitions. [2021-12-28 05:49:21,770 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 623 transitions. Word has length 25 [2021-12-28 05:49:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:21,771 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 623 transitions. [2021-12-28 05:49:21,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 623 transitions. [2021-12-28 05:49:21,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:49:21,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:21,772 INFO L514 BasicCegarLoop]: 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, 1] [2021-12-28 05:49:21,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 05:49:21,772 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:21,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:21,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1913832103, now seen corresponding path program 1 times [2021-12-28 05:49:21,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:21,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031273564] [2021-12-28 05:49:21,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:21,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:21,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:21,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:21,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031273564] [2021-12-28 05:49:21,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031273564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:21,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:21,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:21,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728212869] [2021-12-28 05:49:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:21,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:21,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:21,810 INFO L87 Difference]: Start difference. First operand 448 states and 623 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:21,976 INFO L93 Difference]: Finished difference Result 756 states and 1001 transitions. [2021-12-28 05:49:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 05:49:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:21,980 INFO L225 Difference]: With dead ends: 756 [2021-12-28 05:49:21,980 INFO L226 Difference]: Without dead ends: 756 [2021-12-28 05:49:21,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:21,981 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 339 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:21,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 477 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:21,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-12-28 05:49:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 507. [2021-12-28 05:49:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 425 states have (on average 1.6) internal successors, (680), 488 states have internal predecessors, (680), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 710 transitions. [2021-12-28 05:49:21,989 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 710 transitions. Word has length 25 [2021-12-28 05:49:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:21,989 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 710 transitions. [2021-12-28 05:49:21,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 710 transitions. [2021-12-28 05:49:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-28 05:49:21,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:21,990 INFO L514 BasicCegarLoop]: 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, 1] [2021-12-28 05:49:21,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 05:49:21,990 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1913832102, now seen corresponding path program 1 times [2021-12-28 05:49:21,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:21,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215253948] [2021-12-28 05:49:21,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:21,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215253948] [2021-12-28 05:49:22,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215253948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:49:22,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984312605] [2021-12-28 05:49:22,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:49:22,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:49:22,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:22,011 INFO L87 Difference]: Start difference. First operand 507 states and 710 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,092 INFO L93 Difference]: Finished difference Result 594 states and 801 transitions. [2021-12-28 05:49:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:49:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-28 05:49:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,094 INFO L225 Difference]: With dead ends: 594 [2021-12-28 05:49:22,094 INFO L226 Difference]: Without dead ends: 594 [2021-12-28 05:49:22,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:49:22,095 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 148 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 272 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:22,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-12-28 05:49:22,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 504. [2021-12-28 05:49:22,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 425 states have (on average 1.571764705882353) internal successors, (668), 485 states have internal predecessors, (668), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 698 transitions. [2021-12-28 05:49:22,105 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 698 transitions. Word has length 25 [2021-12-28 05:49:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,105 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 698 transitions. [2021-12-28 05:49:22,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 698 transitions. [2021-12-28 05:49:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:49:22,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:22,106 INFO L514 BasicCegarLoop]: 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, 1, 1] [2021-12-28 05:49:22,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 05:49:22,106 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:22,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash 2102112361, now seen corresponding path program 1 times [2021-12-28 05:49:22,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:22,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545473091] [2021-12-28 05:49:22,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:22,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:22,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545473091] [2021-12-28 05:49:22,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545473091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824196361] [2021-12-28 05:49:22,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:22,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:22,145 INFO L87 Difference]: Start difference. First operand 504 states and 698 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,285 INFO L93 Difference]: Finished difference Result 810 states and 1070 transitions. [2021-12-28 05:49:22,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:22,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-28 05:49:22,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,288 INFO L225 Difference]: With dead ends: 810 [2021-12-28 05:49:22,288 INFO L226 Difference]: Without dead ends: 810 [2021-12-28 05:49:22,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:22,289 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 326 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 515 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-12-28 05:49:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 504. [2021-12-28 05:49:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 425 states have (on average 1.571764705882353) internal successors, (668), 485 states have internal predecessors, (668), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 698 transitions. [2021-12-28 05:49:22,298 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 698 transitions. Word has length 26 [2021-12-28 05:49:22,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,298 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 698 transitions. [2021-12-28 05:49:22,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,299 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 698 transitions. [2021-12-28 05:49:22,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-28 05:49:22,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:22,300 INFO L514 BasicCegarLoop]: 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, 1, 1] [2021-12-28 05:49:22,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 05:49:22,300 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:22,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:22,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1491790357, now seen corresponding path program 1 times [2021-12-28 05:49:22,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:22,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109061103] [2021-12-28 05:49:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:22,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109061103] [2021-12-28 05:49:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109061103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:22,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115350312] [2021-12-28 05:49:22,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:22,351 INFO L87 Difference]: Start difference. First operand 504 states and 698 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,380 INFO L93 Difference]: Finished difference Result 708 states and 959 transitions. [2021-12-28 05:49:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:22,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-28 05:49:22,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,383 INFO L225 Difference]: With dead ends: 708 [2021-12-28 05:49:22,383 INFO L226 Difference]: Without dead ends: 708 [2021-12-28 05:49:22,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:22,384 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 233 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 1515 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:22,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-12-28 05:49:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 443. [2021-12-28 05:49:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 365 states have (on average 1.5726027397260274) internal successors, (574), 424 states have internal predecessors, (574), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 604 transitions. [2021-12-28 05:49:22,393 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 604 transitions. Word has length 26 [2021-12-28 05:49:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,393 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 604 transitions. [2021-12-28 05:49:22,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,393 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 604 transitions. [2021-12-28 05:49:22,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 05:49:22,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:22,394 INFO L514 BasicCegarLoop]: 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, 1, 1, 1] [2021-12-28 05:49:22,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 05:49:22,394 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:22,395 INFO L85 PathProgramCache]: Analyzing trace with hash 731575509, now seen corresponding path program 1 times [2021-12-28 05:49:22,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:22,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748545436] [2021-12-28 05:49:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:22,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748545436] [2021-12-28 05:49:22,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748545436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:22,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680910758] [2021-12-28 05:49:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:22,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:22,447 INFO L87 Difference]: Start difference. First operand 443 states and 604 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,596 INFO L93 Difference]: Finished difference Result 517 states and 672 transitions. [2021-12-28 05:49:22,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:22,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-28 05:49:22,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,599 INFO L225 Difference]: With dead ends: 517 [2021-12-28 05:49:22,599 INFO L226 Difference]: Without dead ends: 517 [2021-12-28 05:49:22,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:22,600 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 167 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 660 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:22,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-28 05:49:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 443. [2021-12-28 05:49:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 365 states have (on average 1.5698630136986302) internal successors, (573), 424 states have internal predecessors, (573), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 603 transitions. [2021-12-28 05:49:22,608 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 603 transitions. Word has length 27 [2021-12-28 05:49:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,608 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 603 transitions. [2021-12-28 05:49:22,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 603 transitions. [2021-12-28 05:49:22,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 05:49:22,609 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:22,609 INFO L514 BasicCegarLoop]: 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, 1, 1, 1] [2021-12-28 05:49:22,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 05:49:22,609 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:22,610 INFO L85 PathProgramCache]: Analyzing trace with hash 946649543, now seen corresponding path program 1 times [2021-12-28 05:49:22,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296077929] [2021-12-28 05:49:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:22,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296077929] [2021-12-28 05:49:22,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296077929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 05:49:22,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961756479] [2021-12-28 05:49:22,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:49:22,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:49:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:22,669 INFO L87 Difference]: Start difference. First operand 443 states and 603 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,826 INFO L93 Difference]: Finished difference Result 645 states and 864 transitions. [2021-12-28 05:49:22,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:22,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-28 05:49:22,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,828 INFO L225 Difference]: With dead ends: 645 [2021-12-28 05:49:22,828 INFO L226 Difference]: Without dead ends: 645 [2021-12-28 05:49:22,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:49:22,829 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 158 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1264 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:22,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-28 05:49:22,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 473. [2021-12-28 05:49:22,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 395 states have (on average 1.539240506329114) internal successors, (608), 454 states have internal predecessors, (608), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 638 transitions. [2021-12-28 05:49:22,835 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 638 transitions. Word has length 27 [2021-12-28 05:49:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,835 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 638 transitions. [2021-12-28 05:49:22,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 638 transitions. [2021-12-28 05:49:22,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-28 05:49:22,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:22,835 INFO L514 BasicCegarLoop]: 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, 1, 1, 1] [2021-12-28 05:49:22,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 05:49:22,835 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:22,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash 946649737, now seen corresponding path program 1 times [2021-12-28 05:49:22,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:22,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645435527] [2021-12-28 05:49:22,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:22,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:22,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:22,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645435527] [2021-12-28 05:49:22,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645435527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:22,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:22,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:22,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058052411] [2021-12-28 05:49:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:22,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:22,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:22,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:22,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:22,870 INFO L87 Difference]: Start difference. First operand 473 states and 638 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:22,989 INFO L93 Difference]: Finished difference Result 808 states and 1039 transitions. [2021-12-28 05:49:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-28 05:49:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:22,991 INFO L225 Difference]: With dead ends: 808 [2021-12-28 05:49:22,991 INFO L226 Difference]: Without dead ends: 808 [2021-12-28 05:49:22,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:22,992 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 330 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:22,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 524 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-12-28 05:49:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 563. [2021-12-28 05:49:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 485 states have (on average 1.5175257731958762) internal successors, (736), 544 states have internal predecessors, (736), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 13 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 766 transitions. [2021-12-28 05:49:22,999 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 766 transitions. Word has length 27 [2021-12-28 05:49:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:22,999 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 766 transitions. [2021-12-28 05:49:22,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 766 transitions. [2021-12-28 05:49:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 05:49:22,999 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:23,000 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-12-28 05:49:23,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-28 05:49:23,000 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:23,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1204004541, now seen corresponding path program 1 times [2021-12-28 05:49:23,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167437418] [2021-12-28 05:49:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:23,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:23,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:23,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167437418] [2021-12-28 05:49:23,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167437418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:23,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:23,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:23,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096817679] [2021-12-28 05:49:23,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:23,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:23,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:23,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:23,056 INFO L87 Difference]: Start difference. First operand 563 states and 766 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:23,187 INFO L93 Difference]: Finished difference Result 758 states and 993 transitions. [2021-12-28 05:49:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:49:23,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-28 05:49:23,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:23,189 INFO L225 Difference]: With dead ends: 758 [2021-12-28 05:49:23,189 INFO L226 Difference]: Without dead ends: 758 [2021-12-28 05:49:23,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:23,190 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 218 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:23,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 665 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:23,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-12-28 05:49:23,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 601. [2021-12-28 05:49:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 519 states have (on average 1.5144508670520231) internal successors, (786), 580 states have internal predecessors, (786), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-28 05:49:23,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 822 transitions. [2021-12-28 05:49:23,209 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 822 transitions. Word has length 28 [2021-12-28 05:49:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:23,209 INFO L470 AbstractCegarLoop]: Abstraction has 601 states and 822 transitions. [2021-12-28 05:49:23,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 822 transitions. [2021-12-28 05:49:23,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-28 05:49:23,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:23,210 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1] [2021-12-28 05:49:23,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-28 05:49:23,210 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:23,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1495351243, now seen corresponding path program 1 times [2021-12-28 05:49:23,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:23,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297494051] [2021-12-28 05:49:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:23,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:23,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:23,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297494051] [2021-12-28 05:49:23,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297494051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:23,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:23,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 05:49:23,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332480029] [2021-12-28 05:49:23,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:23,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:23,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:23,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:23,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:23,245 INFO L87 Difference]: Start difference. First operand 601 states and 822 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:23,376 INFO L93 Difference]: Finished difference Result 845 states and 1089 transitions. [2021-12-28 05:49:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:23,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-12-28 05:49:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:23,380 INFO L225 Difference]: With dead ends: 845 [2021-12-28 05:49:23,380 INFO L226 Difference]: Without dead ends: 845 [2021-12-28 05:49:23,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:23,380 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 317 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:23,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 537 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2021-12-28 05:49:23,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 510. [2021-12-28 05:49:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 429 states have (on average 1.5198135198135199) internal successors, (652), 489 states have internal predecessors, (652), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 14 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-28 05:49:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 688 transitions. [2021-12-28 05:49:23,387 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 688 transitions. Word has length 28 [2021-12-28 05:49:23,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:23,387 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 688 transitions. [2021-12-28 05:49:23,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 688 transitions. [2021-12-28 05:49:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 05:49:23,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:23,388 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:23,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-28 05:49:23,388 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1910467130, now seen corresponding path program 1 times [2021-12-28 05:49:23,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:23,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659981158] [2021-12-28 05:49:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:23,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:23,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:23,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659981158] [2021-12-28 05:49:23,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659981158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:23,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:23,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:23,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879393918] [2021-12-28 05:49:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:23,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:49:23,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:49:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:23,448 INFO L87 Difference]: Start difference. First operand 510 states and 688 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:23,668 INFO L93 Difference]: Finished difference Result 1252 states and 1682 transitions. [2021-12-28 05:49:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:49:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-28 05:49:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:23,671 INFO L225 Difference]: With dead ends: 1252 [2021-12-28 05:49:23,671 INFO L226 Difference]: Without dead ends: 1252 [2021-12-28 05:49:23,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:23,672 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 540 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:23,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1630 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:23,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1252 states. [2021-12-28 05:49:23,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1252 to 644. [2021-12-28 05:49:23,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 563 states have (on average 1.5204262877442274) internal successors, (856), 617 states have internal predecessors, (856), 12 states have call successors, (12), 6 states have call predecessors, (12), 12 states have return successors, (24), 20 states have call predecessors, (24), 12 states have call successors, (24) [2021-12-28 05:49:23,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 892 transitions. [2021-12-28 05:49:23,681 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 892 transitions. Word has length 30 [2021-12-28 05:49:23,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:23,681 INFO L470 AbstractCegarLoop]: Abstraction has 644 states and 892 transitions. [2021-12-28 05:49:23,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 892 transitions. [2021-12-28 05:49:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 05:49:23,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:23,681 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:23,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-28 05:49:23,682 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1702169087, now seen corresponding path program 1 times [2021-12-28 05:49:23,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:23,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142324346] [2021-12-28 05:49:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:23,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:23,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:23,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:23,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142324346] [2021-12-28 05:49:23,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142324346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:23,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:23,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:23,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343026259] [2021-12-28 05:49:23,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:23,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:23,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:23,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:23,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:23,774 INFO L87 Difference]: Start difference. First operand 644 states and 892 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:24,226 INFO L93 Difference]: Finished difference Result 1137 states and 1525 transitions. [2021-12-28 05:49:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:24,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-28 05:49:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:24,230 INFO L225 Difference]: With dead ends: 1137 [2021-12-28 05:49:24,230 INFO L226 Difference]: Without dead ends: 1137 [2021-12-28 05:49:24,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:24,230 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 470 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:24,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1053 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2021-12-28 05:49:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 687. [2021-12-28 05:49:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 602 states have (on average 1.5016611295681064) internal successors, (904), 657 states have internal predecessors, (904), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:24,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 946 transitions. [2021-12-28 05:49:24,241 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 946 transitions. Word has length 30 [2021-12-28 05:49:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:24,241 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 946 transitions. [2021-12-28 05:49:24,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 946 transitions. [2021-12-28 05:49:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 05:49:24,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:24,242 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:24,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-28 05:49:24,242 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:24,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:24,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1975675941, now seen corresponding path program 1 times [2021-12-28 05:49:24,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754237409] [2021-12-28 05:49:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:24,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:24,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:24,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754237409] [2021-12-28 05:49:24,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754237409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:24,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171382215] [2021-12-28 05:49:24,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:24,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:24,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:24,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:24,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:24,293 INFO L87 Difference]: Start difference. First operand 687 states and 946 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:24,317 INFO L93 Difference]: Finished difference Result 1055 states and 1417 transitions. [2021-12-28 05:49:24,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:24,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-28 05:49:24,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:24,320 INFO L225 Difference]: With dead ends: 1055 [2021-12-28 05:49:24,321 INFO L226 Difference]: Without dead ends: 1055 [2021-12-28 05:49:24,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:24,321 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 226 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:24,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1134 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2021-12-28 05:49:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 679. [2021-12-28 05:49:24,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 594 states have (on average 1.5016835016835017) internal successors, (892), 649 states have internal predecessors, (892), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 934 transitions. [2021-12-28 05:49:24,331 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 934 transitions. Word has length 30 [2021-12-28 05:49:24,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:24,331 INFO L470 AbstractCegarLoop]: Abstraction has 679 states and 934 transitions. [2021-12-28 05:49:24,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 934 transitions. [2021-12-28 05:49:24,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-28 05:49:24,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:24,332 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:24,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-28 05:49:24,332 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:24,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1977522983, now seen corresponding path program 1 times [2021-12-28 05:49:24,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:24,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8665567] [2021-12-28 05:49:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:24,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:24,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:24,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8665567] [2021-12-28 05:49:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8665567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:24,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:24,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:24,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514101744] [2021-12-28 05:49:24,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:24,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:49:24,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:24,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:49:24,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:24,390 INFO L87 Difference]: Start difference. First operand 679 states and 934 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:24,596 INFO L93 Difference]: Finished difference Result 1259 states and 1668 transitions. [2021-12-28 05:49:24,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 05:49:24,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-28 05:49:24,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:24,599 INFO L225 Difference]: With dead ends: 1259 [2021-12-28 05:49:24,599 INFO L226 Difference]: Without dead ends: 1259 [2021-12-28 05:49:24,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:24,600 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 502 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:24,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 1806 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:24,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2021-12-28 05:49:24,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 646. [2021-12-28 05:49:24,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 564 states have (on average 1.4663120567375887) internal successors, (827), 616 states have internal predecessors, (827), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:24,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 869 transitions. [2021-12-28 05:49:24,625 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 869 transitions. Word has length 30 [2021-12-28 05:49:24,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:24,625 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 869 transitions. [2021-12-28 05:49:24,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:24,625 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 869 transitions. [2021-12-28 05:49:24,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 05:49:24,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:24,626 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:24,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-28 05:49:24,626 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:24,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1227634393, now seen corresponding path program 1 times [2021-12-28 05:49:24,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801523492] [2021-12-28 05:49:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:24,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:24,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:24,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801523492] [2021-12-28 05:49:24,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801523492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:24,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:24,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:24,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666461386] [2021-12-28 05:49:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:24,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 05:49:24,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 05:49:24,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 05:49:24,717 INFO L87 Difference]: Start difference. First operand 646 states and 869 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:25,024 INFO L93 Difference]: Finished difference Result 925 states and 1194 transitions. [2021-12-28 05:49:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:25,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-28 05:49:25,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:25,027 INFO L225 Difference]: With dead ends: 925 [2021-12-28 05:49:25,027 INFO L226 Difference]: Without dead ends: 925 [2021-12-28 05:49:25,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:49:25,027 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 479 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:25,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 816 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-12-28 05:49:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 646. [2021-12-28 05:49:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 564 states have (on average 1.4592198581560283) internal successors, (823), 616 states have internal predecessors, (823), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 22 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:25,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 865 transitions. [2021-12-28 05:49:25,035 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 865 transitions. Word has length 31 [2021-12-28 05:49:25,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:25,035 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 865 transitions. [2021-12-28 05:49:25,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 7 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 865 transitions. [2021-12-28 05:49:25,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-28 05:49:25,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:25,035 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:25,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-28 05:49:25,036 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:25,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:25,036 INFO L85 PathProgramCache]: Analyzing trace with hash -2007870586, now seen corresponding path program 1 times [2021-12-28 05:49:25,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:25,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091801758] [2021-12-28 05:49:25,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:25,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:25,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:25,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091801758] [2021-12-28 05:49:25,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091801758] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:25,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:25,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 05:49:25,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680982134] [2021-12-28 05:49:25,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:25,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:25,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:25,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:25,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:25,149 INFO L87 Difference]: Start difference. First operand 646 states and 865 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:25,299 INFO L93 Difference]: Finished difference Result 695 states and 913 transitions. [2021-12-28 05:49:25,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:25,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-28 05:49:25,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:25,301 INFO L225 Difference]: With dead ends: 695 [2021-12-28 05:49:25,301 INFO L226 Difference]: Without dead ends: 695 [2021-12-28 05:49:25,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:25,301 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 110 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:25,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 835 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-12-28 05:49:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 625. [2021-12-28 05:49:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 543 states have (on average 1.4659300184162063) internal successors, (796), 597 states have internal predecessors, (796), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 838 transitions. [2021-12-28 05:49:25,317 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 838 transitions. Word has length 32 [2021-12-28 05:49:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:25,317 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 838 transitions. [2021-12-28 05:49:25,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,317 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 838 transitions. [2021-12-28 05:49:25,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 05:49:25,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:25,318 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:25,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-28 05:49:25,318 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:25,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1362637237, now seen corresponding path program 1 times [2021-12-28 05:49:25,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:25,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783278503] [2021-12-28 05:49:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:25,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:25,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783278503] [2021-12-28 05:49:25,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783278503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:25,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:25,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:25,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760533920] [2021-12-28 05:49:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:25,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:25,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:25,350 INFO L87 Difference]: Start difference. First operand 625 states and 838 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:25,490 INFO L93 Difference]: Finished difference Result 729 states and 966 transitions. [2021-12-28 05:49:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:25,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-28 05:49:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:25,492 INFO L225 Difference]: With dead ends: 729 [2021-12-28 05:49:25,492 INFO L226 Difference]: Without dead ends: 729 [2021-12-28 05:49:25,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:25,492 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 468 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:25,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 565 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-28 05:49:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 624. [2021-12-28 05:49:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 543 states have (on average 1.4622467771639043) internal successors, (794), 596 states have internal predecessors, (794), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 836 transitions. [2021-12-28 05:49:25,499 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 836 transitions. Word has length 35 [2021-12-28 05:49:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:25,499 INFO L470 AbstractCegarLoop]: Abstraction has 624 states and 836 transitions. [2021-12-28 05:49:25,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,500 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 836 transitions. [2021-12-28 05:49:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-28 05:49:25,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:25,500 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:25,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-28 05:49:25,500 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:25,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1362637238, now seen corresponding path program 1 times [2021-12-28 05:49:25,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:25,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980677525] [2021-12-28 05:49:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:25,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:25,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:25,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980677525] [2021-12-28 05:49:25,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980677525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:25,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:25,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:25,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078138611] [2021-12-28 05:49:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:25,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:25,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:25,552 INFO L87 Difference]: Start difference. First operand 624 states and 836 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:25,697 INFO L93 Difference]: Finished difference Result 661 states and 851 transitions. [2021-12-28 05:49:25,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:25,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-12-28 05:49:25,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:25,700 INFO L225 Difference]: With dead ends: 661 [2021-12-28 05:49:25,700 INFO L226 Difference]: Without dead ends: 661 [2021-12-28 05:49:25,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:25,700 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 496 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:25,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 618 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-12-28 05:49:25,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 623. [2021-12-28 05:49:25,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 543 states have (on average 1.4585635359116023) internal successors, (792), 595 states have internal predecessors, (792), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 834 transitions. [2021-12-28 05:49:25,707 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 834 transitions. Word has length 35 [2021-12-28 05:49:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:25,707 INFO L470 AbstractCegarLoop]: Abstraction has 623 states and 834 transitions. [2021-12-28 05:49:25,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,707 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 834 transitions. [2021-12-28 05:49:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 05:49:25,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:25,708 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:25,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-28 05:49:25,708 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:25,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -470637162, now seen corresponding path program 1 times [2021-12-28 05:49:25,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:25,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523282811] [2021-12-28 05:49:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:25,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:25,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:25,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523282811] [2021-12-28 05:49:25,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523282811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:25,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:25,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:25,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119343388] [2021-12-28 05:49:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:25,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:25,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:25,743 INFO L87 Difference]: Start difference. First operand 623 states and 834 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:25,913 INFO L93 Difference]: Finished difference Result 1070 states and 1398 transitions. [2021-12-28 05:49:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:49:25,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-28 05:49:25,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:25,917 INFO L225 Difference]: With dead ends: 1070 [2021-12-28 05:49:25,918 INFO L226 Difference]: Without dead ends: 1070 [2021-12-28 05:49:25,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:25,918 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 619 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:25,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 513 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:25,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-12-28 05:49:25,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 620. [2021-12-28 05:49:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 543 states have (on average 1.4475138121546962) internal successors, (786), 592 states have internal predecessors, (786), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:25,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 828 transitions. [2021-12-28 05:49:25,930 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 828 transitions. Word has length 37 [2021-12-28 05:49:25,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:25,930 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 828 transitions. [2021-12-28 05:49:25,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:25,930 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 828 transitions. [2021-12-28 05:49:25,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 05:49:25,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:25,931 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:25,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-28 05:49:25,931 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:25,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:25,932 INFO L85 PathProgramCache]: Analyzing trace with hash -470637161, now seen corresponding path program 1 times [2021-12-28 05:49:25,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:25,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832473780] [2021-12-28 05:49:25,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:25,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:26,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:26,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832473780] [2021-12-28 05:49:26,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832473780] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:26,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:26,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:26,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140587290] [2021-12-28 05:49:26,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:26,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:26,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:26,003 INFO L87 Difference]: Start difference. First operand 620 states and 828 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:26,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:26,193 INFO L93 Difference]: Finished difference Result 896 states and 1151 transitions. [2021-12-28 05:49:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-28 05:49:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:26,195 INFO L225 Difference]: With dead ends: 896 [2021-12-28 05:49:26,195 INFO L226 Difference]: Without dead ends: 896 [2021-12-28 05:49:26,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:26,196 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 715 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:26,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 641 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:26,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-28 05:49:26,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 619. [2021-12-28 05:49:26,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 543 states have (on average 1.4438305709023942) internal successors, (784), 591 states have internal predecessors, (784), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:26,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 826 transitions. [2021-12-28 05:49:26,203 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 826 transitions. Word has length 37 [2021-12-28 05:49:26,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:26,203 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 826 transitions. [2021-12-28 05:49:26,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:26,204 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 826 transitions. [2021-12-28 05:49:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 05:49:26,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:26,204 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:26,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-28 05:49:26,204 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:26,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:26,205 INFO L85 PathProgramCache]: Analyzing trace with hash -470637000, now seen corresponding path program 1 times [2021-12-28 05:49:26,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:26,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487105576] [2021-12-28 05:49:26,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:26,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:26,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:26,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487105576] [2021-12-28 05:49:26,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487105576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:26,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:26,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:26,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618437098] [2021-12-28 05:49:26,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:26,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:49:26,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:49:26,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:49:26,276 INFO L87 Difference]: Start difference. First operand 619 states and 826 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:26,486 INFO L93 Difference]: Finished difference Result 787 states and 995 transitions. [2021-12-28 05:49:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:49:26,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-12-28 05:49:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:26,488 INFO L225 Difference]: With dead ends: 787 [2021-12-28 05:49:26,488 INFO L226 Difference]: Without dead ends: 787 [2021-12-28 05:49:26,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:26,488 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 375 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:26,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [377 Valid, 551 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:26,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2021-12-28 05:49:26,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 619. [2021-12-28 05:49:26,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 543 states have (on average 1.4401473296500922) internal successors, (782), 591 states have internal predecessors, (782), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 20 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 824 transitions. [2021-12-28 05:49:26,495 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 824 transitions. Word has length 37 [2021-12-28 05:49:26,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:26,495 INFO L470 AbstractCegarLoop]: Abstraction has 619 states and 824 transitions. [2021-12-28 05:49:26,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 824 transitions. [2021-12-28 05:49:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 05:49:26,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:26,495 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:49:26,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-28 05:49:26,496 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1641938402, now seen corresponding path program 1 times [2021-12-28 05:49:26,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:26,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576362935] [2021-12-28 05:49:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:26,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:26,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-28 05:49:26,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:49:26,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576362935] [2021-12-28 05:49:26,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576362935] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:26,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469755168] [2021-12-28 05:49:26,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:26,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:26,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:26,535 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:26,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 05:49:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:26,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-28 05:49:26,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:26,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:49:26,868 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-28 05:49:26,869 INFO L387 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 12 treesize of output 11 [2021-12-28 05:49:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:49:26,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469755168] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 05:49:26,908 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 05:49:26,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2021-12-28 05:49:26,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366167989] [2021-12-28 05:49:26,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 05:49:26,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:26,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:26,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:26,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:26,910 INFO L87 Difference]: Start difference. First operand 619 states and 824 transitions. Second operand has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:49:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:27,512 INFO L93 Difference]: Finished difference Result 1838 states and 2259 transitions. [2021-12-28 05:49:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 05:49:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2021-12-28 05:49:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:27,515 INFO L225 Difference]: With dead ends: 1838 [2021-12-28 05:49:27,515 INFO L226 Difference]: Without dead ends: 1838 [2021-12-28 05:49:27,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-12-28 05:49:27,519 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 2609 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:27,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2611 Valid, 1384 Invalid, 965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2021-12-28 05:49:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 735. [2021-12-28 05:49:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 653 states have (on average 1.3705972434915774) internal successors, (895), 696 states have internal predecessors, (895), 20 states have call successors, (20), 10 states have call predecessors, (20), 20 states have return successors, (40), 28 states have call predecessors, (40), 20 states have call successors, (40) [2021-12-28 05:49:27,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 955 transitions. [2021-12-28 05:49:27,535 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 955 transitions. Word has length 43 [2021-12-28 05:49:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:27,536 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 955 transitions. [2021-12-28 05:49:27,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.181818181818182) internal successors, (79), 12 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:49:27,545 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 955 transitions. [2021-12-28 05:49:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 05:49:27,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:27,546 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:27,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 05:49:27,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:27,763 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:27,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -974885366, now seen corresponding path program 1 times [2021-12-28 05:49:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:27,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592058858] [2021-12-28 05:49:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:27,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:27,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592058858] [2021-12-28 05:49:27,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592058858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:27,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:27,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:49:27,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762397766] [2021-12-28 05:49:27,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:27,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:49:27,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:27,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:49:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:27,808 INFO L87 Difference]: Start difference. First operand 735 states and 955 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:27,820 INFO L93 Difference]: Finished difference Result 868 states and 1111 transitions. [2021-12-28 05:49:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:49:27,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-28 05:49:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:27,821 INFO L225 Difference]: With dead ends: 868 [2021-12-28 05:49:27,822 INFO L226 Difference]: Without dead ends: 868 [2021-12-28 05:49:27,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:49:27,826 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 152 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:27,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 582 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:27,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-28 05:49:27,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 691. [2021-12-28 05:49:27,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 613 states have (on average 1.3800978792822185) internal successors, (846), 656 states have internal predecessors, (846), 18 states have call successors, (18), 9 states have call predecessors, (18), 18 states have return successors, (36), 25 states have call predecessors, (36), 18 states have call successors, (36) [2021-12-28 05:49:27,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 900 transitions. [2021-12-28 05:49:27,833 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 900 transitions. Word has length 45 [2021-12-28 05:49:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:27,834 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 900 transitions. [2021-12-28 05:49:27,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:27,835 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 900 transitions. [2021-12-28 05:49:27,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 05:49:27,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:27,835 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:27,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-28 05:49:27,835 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:27,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1845991888, now seen corresponding path program 1 times [2021-12-28 05:49:27,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:27,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859987828] [2021-12-28 05:49:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:27,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-28 05:49:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:27,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859987828] [2021-12-28 05:49:27,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859987828] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117527607] [2021-12-28 05:49:27,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:27,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:27,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:27,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:27,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 05:49:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:27,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-28 05:49:28,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:28,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:28,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-28 05:49:28,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:28,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2021-12-28 05:49:28,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 05:49:28,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:49:28,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117527607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:28,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:49:28,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2021-12-28 05:49:28,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701719298] [2021-12-28 05:49:28,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:28,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 05:49:28,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 05:49:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:49:28,193 INFO L87 Difference]: Start difference. First operand 691 states and 900 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:28,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:28,453 INFO L93 Difference]: Finished difference Result 605 states and 758 transitions. [2021-12-28 05:49:28,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 05:49:28,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-12-28 05:49:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:28,454 INFO L225 Difference]: With dead ends: 605 [2021-12-28 05:49:28,454 INFO L226 Difference]: Without dead ends: 605 [2021-12-28 05:49:28,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-28 05:49:28,455 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 286 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:28,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 1441 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-12-28 05:49:28,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 438. [2021-12-28 05:49:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 380 states have (on average 1.4052631578947368) internal successors, (534), 418 states have internal predecessors, (534), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (16), 15 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-28 05:49:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 558 transitions. [2021-12-28 05:49:28,459 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 558 transitions. Word has length 45 [2021-12-28 05:49:28,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:28,460 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 558 transitions. [2021-12-28 05:49:28,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:28,460 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 558 transitions. [2021-12-28 05:49:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-28 05:49:28,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:28,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:28,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 05:49:28,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-12-28 05:49:28,676 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:28,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -102248492, now seen corresponding path program 1 times [2021-12-28 05:49:28,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685767300] [2021-12-28 05:49:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:28,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:28,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:28,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685767300] [2021-12-28 05:49:28,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685767300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:28,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:28,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 05:49:28,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869709430] [2021-12-28 05:49:28,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:28,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:49:28,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:28,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:49:28,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:28,816 INFO L87 Difference]: Start difference. First operand 438 states and 558 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:29,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:29,330 INFO L93 Difference]: Finished difference Result 836 states and 1072 transitions. [2021-12-28 05:49:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:49:29,330 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-28 05:49:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:29,331 INFO L225 Difference]: With dead ends: 836 [2021-12-28 05:49:29,331 INFO L226 Difference]: Without dead ends: 836 [2021-12-28 05:49:29,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2021-12-28 05:49:29,332 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 683 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:29,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 855 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:29,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-12-28 05:49:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 439. [2021-12-28 05:49:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 382 states have (on average 1.4005235602094241) internal successors, (535), 419 states have internal predecessors, (535), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (16), 15 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-28 05:49:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 559 transitions. [2021-12-28 05:49:29,338 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 559 transitions. Word has length 48 [2021-12-28 05:49:29,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:29,338 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 559 transitions. [2021-12-28 05:49:29,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 559 transitions. [2021-12-28 05:49:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-28 05:49:29,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:29,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:29,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-28 05:49:29,341 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr60REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:29,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash -102248430, now seen corresponding path program 1 times [2021-12-28 05:49:29,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:29,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836200378] [2021-12-28 05:49:29,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:29,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:29,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:29,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836200378] [2021-12-28 05:49:29,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836200378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:29,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:29,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:29,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180711879] [2021-12-28 05:49:29,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:29,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:29,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:29,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:29,423 INFO L87 Difference]: Start difference. First operand 439 states and 559 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:29,556 INFO L93 Difference]: Finished difference Result 454 states and 572 transitions. [2021-12-28 05:49:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:49:29,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-28 05:49:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:29,557 INFO L225 Difference]: With dead ends: 454 [2021-12-28 05:49:29,557 INFO L226 Difference]: Without dead ends: 454 [2021-12-28 05:49:29,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-28 05:49:29,558 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 393 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:29,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 318 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-12-28 05:49:29,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 436. [2021-12-28 05:49:29,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 380 states have (on average 1.394736842105263) internal successors, (530), 416 states have internal predecessors, (530), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (16), 15 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-28 05:49:29,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 554 transitions. [2021-12-28 05:49:29,571 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 554 transitions. Word has length 48 [2021-12-28 05:49:29,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:29,572 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 554 transitions. [2021-12-28 05:49:29,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:29,572 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 554 transitions. [2021-12-28 05:49:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 05:49:29,572 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:29,572 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:49:29,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-28 05:49:29,573 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:29,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1483644560, now seen corresponding path program 1 times [2021-12-28 05:49:29,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:29,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184049436] [2021-12-28 05:49:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:29,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:49:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:49:29,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:29,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184049436] [2021-12-28 05:49:29,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184049436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:29,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:29,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:29,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842068035] [2021-12-28 05:49:29,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:29,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:29,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:29,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:29,633 INFO L87 Difference]: Start difference. First operand 436 states and 554 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:29,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:29,751 INFO L93 Difference]: Finished difference Result 503 states and 640 transitions. [2021-12-28 05:49:29,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 05:49:29,751 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2021-12-28 05:49:29,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:29,752 INFO L225 Difference]: With dead ends: 503 [2021-12-28 05:49:29,752 INFO L226 Difference]: Without dead ends: 503 [2021-12-28 05:49:29,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-28 05:49:29,753 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 342 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:29,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 316 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-28 05:49:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 434. [2021-12-28 05:49:29,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 380 states have (on average 1.3631578947368421) internal successors, (518), 414 states have internal predecessors, (518), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (16), 15 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-28 05:49:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 542 transitions. [2021-12-28 05:49:29,756 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 542 transitions. Word has length 50 [2021-12-28 05:49:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:29,756 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 542 transitions. [2021-12-28 05:49:29,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:29,758 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 542 transitions. [2021-12-28 05:49:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:49:29,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:29,758 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:29,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-28 05:49:29,758 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:29,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:29,759 INFO L85 PathProgramCache]: Analyzing trace with hash -952792567, now seen corresponding path program 1 times [2021-12-28 05:49:29,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:29,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269812103] [2021-12-28 05:49:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:29,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:29,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:29,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269812103] [2021-12-28 05:49:29,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269812103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:29,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121731665] [2021-12-28 05:49:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:29,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:29,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:29,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 05:49:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:30,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-28 05:49:30,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:30,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:49:30,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-28 05:49:30,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:30,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 9 [2021-12-28 05:49:31,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:31,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:49:31,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121731665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:31,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:49:31,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2021-12-28 05:49:31,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651924304] [2021-12-28 05:49:31,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:31,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:31,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:31,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2021-12-28 05:49:31,007 INFO L87 Difference]: Start difference. First operand 434 states and 542 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:31,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:31,289 INFO L93 Difference]: Finished difference Result 583 states and 711 transitions. [2021-12-28 05:49:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:49:31,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:49:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:31,291 INFO L225 Difference]: With dead ends: 583 [2021-12-28 05:49:31,291 INFO L226 Difference]: Without dead ends: 583 [2021-12-28 05:49:31,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-12-28 05:49:31,291 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 186 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:31,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [188 Valid, 1223 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 152 Unchecked, 0.2s Time] [2021-12-28 05:49:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-12-28 05:49:31,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 504. [2021-12-28 05:49:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 447 states have (on average 1.3512304250559284) internal successors, (604), 482 states have internal predecessors, (604), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (20), 16 states have call predecessors, (20), 10 states have call successors, (20) [2021-12-28 05:49:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 634 transitions. [2021-12-28 05:49:31,295 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 634 transitions. Word has length 51 [2021-12-28 05:49:31,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:31,296 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 634 transitions. [2021-12-28 05:49:31,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 634 transitions. [2021-12-28 05:49:31,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:49:31,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:31,296 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:31,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 05:49:31,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:31,497 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:31,497 INFO L85 PathProgramCache]: Analyzing trace with hash -952792566, now seen corresponding path program 1 times [2021-12-28 05:49:31,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:31,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846948644] [2021-12-28 05:49:31,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:31,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:31,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:31,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846948644] [2021-12-28 05:49:31,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846948644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:31,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:31,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:49:31,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298063995] [2021-12-28 05:49:31,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:31,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:31,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:31,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:31,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:31,741 INFO L87 Difference]: Start difference. First operand 504 states and 634 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:32,501 INFO L93 Difference]: Finished difference Result 1561 states and 1967 transitions. [2021-12-28 05:49:32,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 05:49:32,501 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:49:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:32,503 INFO L225 Difference]: With dead ends: 1561 [2021-12-28 05:49:32,503 INFO L226 Difference]: Without dead ends: 1561 [2021-12-28 05:49:32,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2021-12-28 05:49:32,504 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1318 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:32,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1320 Valid, 1239 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-12-28 05:49:32,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 752. [2021-12-28 05:49:32,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 683 states have (on average 1.357247437774524) internal successors, (927), 721 states have internal predecessors, (927), 16 states have call successors, (16), 8 states have call predecessors, (16), 16 states have return successors, (32), 22 states have call predecessors, (32), 16 states have call successors, (32) [2021-12-28 05:49:32,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 975 transitions. [2021-12-28 05:49:32,512 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 975 transitions. Word has length 51 [2021-12-28 05:49:32,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:32,513 INFO L470 AbstractCegarLoop]: Abstraction has 752 states and 975 transitions. [2021-12-28 05:49:32,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 975 transitions. [2021-12-28 05:49:32,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-28 05:49:32,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:32,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:32,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-28 05:49:32,514 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:32,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:32,514 INFO L85 PathProgramCache]: Analyzing trace with hash -950945525, now seen corresponding path program 1 times [2021-12-28 05:49:32,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:32,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030928145] [2021-12-28 05:49:32,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:32,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:33,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030928145] [2021-12-28 05:49:33,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030928145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:33,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:33,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 05:49:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973548638] [2021-12-28 05:49:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:33,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:49:33,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:49:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:33,011 INFO L87 Difference]: Start difference. First operand 752 states and 975 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:33,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:33,470 INFO L93 Difference]: Finished difference Result 859 states and 1098 transitions. [2021-12-28 05:49:33,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:33,471 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-28 05:49:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:33,472 INFO L225 Difference]: With dead ends: 859 [2021-12-28 05:49:33,472 INFO L226 Difference]: Without dead ends: 859 [2021-12-28 05:49:33,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-28 05:49:33,472 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 242 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:33,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1026 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-12-28 05:49:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 707. [2021-12-28 05:49:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 642 states have (on average 1.35202492211838) internal successors, (868), 678 states have internal predecessors, (868), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 21 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 910 transitions. [2021-12-28 05:49:33,478 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 910 transitions. Word has length 51 [2021-12-28 05:49:33,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:33,478 INFO L470 AbstractCegarLoop]: Abstraction has 707 states and 910 transitions. [2021-12-28 05:49:33,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:33,478 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 910 transitions. [2021-12-28 05:49:33,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 05:49:33,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:33,479 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:33,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-28 05:49:33,479 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:33,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:33,480 INFO L85 PathProgramCache]: Analyzing trace with hash 764231220, now seen corresponding path program 1 times [2021-12-28 05:49:33,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:33,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233685861] [2021-12-28 05:49:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:33,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:33,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:33,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233685861] [2021-12-28 05:49:33,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233685861] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:33,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919779804] [2021-12-28 05:49:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:33,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:33,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:33,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:33,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 05:49:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:33,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-28 05:49:33,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:33,909 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 05:49:33,910 INFO L387 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 11 treesize of output 11 [2021-12-28 05:49:34,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:49:34,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:49:34,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:34,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-28 05:49:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:34,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-28 05:49:34,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:49:34,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:49:34,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:49:34,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:49:34,345 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:34,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:49:34,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919779804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:34,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 05:49:34,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 23 [2021-12-28 05:49:34,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841355148] [2021-12-28 05:49:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:34,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:34,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2021-12-28 05:49:34,346 INFO L87 Difference]: Start difference. First operand 707 states and 910 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:35,155 INFO L93 Difference]: Finished difference Result 1326 states and 1648 transitions. [2021-12-28 05:49:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 05:49:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-28 05:49:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:35,158 INFO L225 Difference]: With dead ends: 1326 [2021-12-28 05:49:35,158 INFO L226 Difference]: Without dead ends: 1326 [2021-12-28 05:49:35,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-12-28 05:49:35,159 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 716 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:35,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1919 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:35,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2021-12-28 05:49:35,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 710. [2021-12-28 05:49:35,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 645 states have (on average 1.3488372093023255) internal successors, (870), 681 states have internal predecessors, (870), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 21 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:35,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 912 transitions. [2021-12-28 05:49:35,170 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 912 transitions. Word has length 52 [2021-12-28 05:49:35,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:35,171 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 912 transitions. [2021-12-28 05:49:35,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:35,171 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 912 transitions. [2021-12-28 05:49:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 05:49:35,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:35,171 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:35,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-28 05:49:35,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:35,388 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 945744203, now seen corresponding path program 1 times [2021-12-28 05:49:35,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:35,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442817095] [2021-12-28 05:49:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:35,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:35,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:35,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442817095] [2021-12-28 05:49:35,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442817095] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:35,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520124547] [2021-12-28 05:49:35,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:35,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:35,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:35,716 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:35,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 05:49:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:35,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 73 conjunts are in the unsatisfiable core [2021-12-28 05:49:35,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:36,000 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-28 05:49:36,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-28 05:49:36,290 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-28 05:49:36,511 INFO L353 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-28 05:49:36,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-12-28 05:49:36,523 INFO L353 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-28 05:49:36,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-28 05:49:37,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:37,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 05:49:37,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 28 [2021-12-28 05:49:37,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:37,076 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-28 05:49:37,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 10 [2021-12-28 05:49:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:37,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:49:38,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520124547] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:38,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:49:38,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 21 [2021-12-28 05:49:38,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974602909] [2021-12-28 05:49:38,134 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:49:38,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 05:49:38,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 05:49:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=801, Unknown=5, NotChecked=0, Total=930 [2021-12-28 05:49:38,135 INFO L87 Difference]: Start difference. First operand 710 states and 912 transitions. Second operand has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:38,943 INFO L93 Difference]: Finished difference Result 840 states and 1061 transitions. [2021-12-28 05:49:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 05:49:38,944 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2021-12-28 05:49:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:38,945 INFO L225 Difference]: With dead ends: 840 [2021-12-28 05:49:38,945 INFO L226 Difference]: Without dead ends: 840 [2021-12-28 05:49:38,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=317, Invalid=1658, Unknown=5, NotChecked=0, Total=1980 [2021-12-28 05:49:38,946 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 402 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 337 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:38,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2035 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 665 Invalid, 0 Unknown, 337 Unchecked, 0.3s Time] [2021-12-28 05:49:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-12-28 05:49:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 776. [2021-12-28 05:49:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 708 states have (on average 1.3432203389830508) internal successors, (951), 745 states have internal predecessors, (951), 15 states have call successors, (15), 8 states have call predecessors, (15), 16 states have return successors, (30), 22 states have call predecessors, (30), 15 states have call successors, (30) [2021-12-28 05:49:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 996 transitions. [2021-12-28 05:49:38,957 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 996 transitions. Word has length 52 [2021-12-28 05:49:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:38,957 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 996 transitions. [2021-12-28 05:49:38,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.761904761904762) internal successors, (100), 20 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 996 transitions. [2021-12-28 05:49:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-28 05:49:38,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:38,958 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:38,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 05:49:39,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:39,176 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:39,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:39,177 INFO L85 PathProgramCache]: Analyzing trace with hash 945744204, now seen corresponding path program 1 times [2021-12-28 05:49:39,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:39,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295056874] [2021-12-28 05:49:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:39,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:39,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295056874] [2021-12-28 05:49:39,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295056874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:39,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:39,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 05:49:39,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365079577] [2021-12-28 05:49:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:39,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 05:49:39,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 05:49:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:49:39,451 INFO L87 Difference]: Start difference. First operand 776 states and 996 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:40,268 INFO L93 Difference]: Finished difference Result 1538 states and 1900 transitions. [2021-12-28 05:49:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 05:49:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2021-12-28 05:49:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:40,271 INFO L225 Difference]: With dead ends: 1538 [2021-12-28 05:49:40,271 INFO L226 Difference]: Without dead ends: 1538 [2021-12-28 05:49:40,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2021-12-28 05:49:40,271 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1099 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:40,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 2192 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-12-28 05:49:40,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 698. [2021-12-28 05:49:40,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 633 states have (on average 1.3554502369668247) internal successors, (858), 669 states have internal predecessors, (858), 14 states have call successors, (14), 7 states have call predecessors, (14), 14 states have return successors, (28), 21 states have call predecessors, (28), 14 states have call successors, (28) [2021-12-28 05:49:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 900 transitions. [2021-12-28 05:49:40,299 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 900 transitions. Word has length 52 [2021-12-28 05:49:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:40,300 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 900 transitions. [2021-12-28 05:49:40,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 900 transitions. [2021-12-28 05:49:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:40,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:40,300 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:40,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-28 05:49:40,301 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:40,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash -689191823, now seen corresponding path program 1 times [2021-12-28 05:49:40,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:40,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3085839] [2021-12-28 05:49:40,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:40,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:40,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:40,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:40,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3085839] [2021-12-28 05:49:40,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3085839] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:40,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:40,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-28 05:49:40,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372954276] [2021-12-28 05:49:40,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:40,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 05:49:40,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:40,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 05:49:40,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-28 05:49:40,629 INFO L87 Difference]: Start difference. First operand 698 states and 900 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:41,985 INFO L93 Difference]: Finished difference Result 1954 states and 2517 transitions. [2021-12-28 05:49:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-28 05:49:41,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:41,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:41,998 INFO L225 Difference]: With dead ends: 1954 [2021-12-28 05:49:41,999 INFO L226 Difference]: Without dead ends: 1954 [2021-12-28 05:49:41,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=480, Invalid=1682, Unknown=0, NotChecked=0, Total=2162 [2021-12-28 05:49:42,000 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2318 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 1214 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 1214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:42,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2017 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2021-12-28 05:49:42,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 818. [2021-12-28 05:49:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 741 states have (on average 1.3522267206477734) internal successors, (1002), 780 states have internal predecessors, (1002), 20 states have call successors, (20), 10 states have call predecessors, (20), 20 states have return successors, (40), 27 states have call predecessors, (40), 20 states have call successors, (40) [2021-12-28 05:49:42,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1062 transitions. [2021-12-28 05:49:42,015 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1062 transitions. Word has length 53 [2021-12-28 05:49:42,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:42,015 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1062 transitions. [2021-12-28 05:49:42,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1062 transitions. [2021-12-28 05:49:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:42,016 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:42,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:42,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-28 05:49:42,016 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash -689191822, now seen corresponding path program 1 times [2021-12-28 05:49:42,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640766310] [2021-12-28 05:49:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:42,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:42,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640766310] [2021-12-28 05:49:42,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640766310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:42,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:42,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-28 05:49:42,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276042071] [2021-12-28 05:49:42,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:42,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 05:49:42,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:42,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 05:49:42,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-28 05:49:42,422 INFO L87 Difference]: Start difference. First operand 818 states and 1062 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:43,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:43,518 INFO L93 Difference]: Finished difference Result 1761 states and 2266 transitions. [2021-12-28 05:49:43,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-28 05:49:43,519 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:43,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:43,521 INFO L225 Difference]: With dead ends: 1761 [2021-12-28 05:49:43,521 INFO L226 Difference]: Without dead ends: 1761 [2021-12-28 05:49:43,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2021-12-28 05:49:43,522 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 2289 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:43,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2291 Valid, 1220 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-12-28 05:49:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 818. [2021-12-28 05:49:43,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 741 states have (on average 1.3508771929824561) internal successors, (1001), 780 states have internal predecessors, (1001), 20 states have call successors, (20), 10 states have call predecessors, (20), 20 states have return successors, (40), 27 states have call predecessors, (40), 20 states have call successors, (40) [2021-12-28 05:49:43,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1061 transitions. [2021-12-28 05:49:43,532 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1061 transitions. Word has length 53 [2021-12-28 05:49:43,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:43,533 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1061 transitions. [2021-12-28 05:49:43,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:43,533 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1061 transitions. [2021-12-28 05:49:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:43,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:43,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:43,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-28 05:49:43,534 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:43,534 INFO L85 PathProgramCache]: Analyzing trace with hash -687344781, now seen corresponding path program 1 times [2021-12-28 05:49:43,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:43,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463452001] [2021-12-28 05:49:43,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:43,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:43,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:43,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:43,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463452001] [2021-12-28 05:49:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463452001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:43,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:43,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:49:43,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495450596] [2021-12-28 05:49:43,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:43,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:43,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:43,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:43,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:43,695 INFO L87 Difference]: Start difference. First operand 818 states and 1061 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:44,097 INFO L93 Difference]: Finished difference Result 1574 states and 2047 transitions. [2021-12-28 05:49:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-28 05:49:44,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:44,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:44,099 INFO L225 Difference]: With dead ends: 1574 [2021-12-28 05:49:44,099 INFO L226 Difference]: Without dead ends: 1574 [2021-12-28 05:49:44,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2021-12-28 05:49:44,099 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 933 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:44,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1053 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2021-12-28 05:49:44,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1141. [2021-12-28 05:49:44,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1028 states have (on average 1.3375486381322956) internal successors, (1375), 1076 states have internal predecessors, (1375), 38 states have call successors, (38), 19 states have call predecessors, (38), 38 states have return successors, (76), 45 states have call predecessors, (76), 38 states have call successors, (76) [2021-12-28 05:49:44,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1489 transitions. [2021-12-28 05:49:44,111 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1489 transitions. Word has length 53 [2021-12-28 05:49:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:44,111 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1489 transitions. [2021-12-28 05:49:44,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:44,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1489 transitions. [2021-12-28 05:49:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:44,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:44,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:44,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-28 05:49:44,113 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:44,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:44,113 INFO L85 PathProgramCache]: Analyzing trace with hash -687344780, now seen corresponding path program 1 times [2021-12-28 05:49:44,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:44,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251673361] [2021-12-28 05:49:44,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:44,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:44,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:44,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251673361] [2021-12-28 05:49:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251673361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:44,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:44,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-28 05:49:44,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070205492] [2021-12-28 05:49:44,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:44,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 05:49:44,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:44,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 05:49:44,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:49:44,348 INFO L87 Difference]: Start difference. First operand 1141 states and 1489 transitions. Second operand has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:44,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:44,768 INFO L93 Difference]: Finished difference Result 1495 states and 1941 transitions. [2021-12-28 05:49:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:49:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:44,770 INFO L225 Difference]: With dead ends: 1495 [2021-12-28 05:49:44,770 INFO L226 Difference]: Without dead ends: 1495 [2021-12-28 05:49:44,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-12-28 05:49:44,771 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 928 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:44,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 873 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 05:49:44,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-12-28 05:49:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1218. [2021-12-28 05:49:44,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 1097 states have (on average 1.3409298085688242) internal successors, (1471), 1147 states have internal predecessors, (1471), 42 states have call successors, (42), 21 states have call predecessors, (42), 42 states have return successors, (84), 49 states have call predecessors, (84), 42 states have call successors, (84) [2021-12-28 05:49:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1597 transitions. [2021-12-28 05:49:44,783 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1597 transitions. Word has length 53 [2021-12-28 05:49:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:44,783 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1597 transitions. [2021-12-28 05:49:44,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.1) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1597 transitions. [2021-12-28 05:49:44,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:44,783 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:44,784 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:44,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-28 05:49:44,784 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:44,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:44,784 INFO L85 PathProgramCache]: Analyzing trace with hash -887259092, now seen corresponding path program 1 times [2021-12-28 05:49:44,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:44,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630238799] [2021-12-28 05:49:44,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:44,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:45,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:45,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630238799] [2021-12-28 05:49:45,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630238799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:45,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:45,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 05:49:45,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252961993] [2021-12-28 05:49:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:45,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 05:49:45,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 05:49:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:49:45,042 INFO L87 Difference]: Start difference. First operand 1218 states and 1597 transitions. Second operand has 13 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:45,686 INFO L93 Difference]: Finished difference Result 2637 states and 3465 transitions. [2021-12-28 05:49:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 05:49:45,686 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:45,690 INFO L225 Difference]: With dead ends: 2637 [2021-12-28 05:49:45,690 INFO L226 Difference]: Without dead ends: 2637 [2021-12-28 05:49:45,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2021-12-28 05:49:45,690 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1052 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:45,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 2013 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:49:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-12-28 05:49:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 1549. [2021-12-28 05:49:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1404 states have (on average 1.3418803418803418) internal successors, (1884), 1460 states have internal predecessors, (1884), 54 states have call successors, (54), 27 states have call predecessors, (54), 54 states have return successors, (108), 61 states have call predecessors, (108), 54 states have call successors, (108) [2021-12-28 05:49:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2046 transitions. [2021-12-28 05:49:45,711 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2046 transitions. Word has length 53 [2021-12-28 05:49:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:45,712 INFO L470 AbstractCegarLoop]: Abstraction has 1549 states and 2046 transitions. [2021-12-28 05:49:45,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:45,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2046 transitions. [2021-12-28 05:49:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-28 05:49:45,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:45,713 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:45,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-28 05:49:45,713 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr62REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash -887259091, now seen corresponding path program 1 times [2021-12-28 05:49:45,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:45,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461440014] [2021-12-28 05:49:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:45,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:46,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:46,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:46,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461440014] [2021-12-28 05:49:46,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461440014] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:46,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:49:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091080659] [2021-12-28 05:49:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:46,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:46,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:46,032 INFO L87 Difference]: Start difference. First operand 1549 states and 2046 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:46,844 INFO L93 Difference]: Finished difference Result 2618 states and 3447 transitions. [2021-12-28 05:49:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 05:49:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-28 05:49:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:46,848 INFO L225 Difference]: With dead ends: 2618 [2021-12-28 05:49:46,848 INFO L226 Difference]: Without dead ends: 2618 [2021-12-28 05:49:46,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-12-28 05:49:46,849 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 850 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:46,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1901 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:46,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-12-28 05:49:46,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1332. [2021-12-28 05:49:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1211 states have (on average 1.347646573080099) internal successors, (1632), 1261 states have internal predecessors, (1632), 42 states have call successors, (42), 21 states have call predecessors, (42), 42 states have return successors, (84), 49 states have call predecessors, (84), 42 states have call successors, (84) [2021-12-28 05:49:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1758 transitions. [2021-12-28 05:49:46,869 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1758 transitions. Word has length 53 [2021-12-28 05:49:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:46,869 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1758 transitions. [2021-12-28 05:49:46,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1758 transitions. [2021-12-28 05:49:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:49:46,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:46,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:46,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-28 05:49:46,871 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 109888723, now seen corresponding path program 1 times [2021-12-28 05:49:46,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:46,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530804895] [2021-12-28 05:49:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:46,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:47,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:47,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:47,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530804895] [2021-12-28 05:49:47,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530804895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:47,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:47,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-28 05:49:47,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249801932] [2021-12-28 05:49:47,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:47,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:47,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:47,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:47,092 INFO L87 Difference]: Start difference. First operand 1332 states and 1758 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:47,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:47,384 INFO L93 Difference]: Finished difference Result 1732 states and 2277 transitions. [2021-12-28 05:49:47,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:49:47,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:49:47,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:47,386 INFO L225 Difference]: With dead ends: 1732 [2021-12-28 05:49:47,386 INFO L226 Difference]: Without dead ends: 1732 [2021-12-28 05:49:47,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2021-12-28 05:49:47,387 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 1130 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:47,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 951 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2021-12-28 05:49:47,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 1421. [2021-12-28 05:49:47,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1421 states, 1292 states have (on average 1.3506191950464397) internal successors, (1745), 1344 states have internal predecessors, (1745), 46 states have call successors, (46), 23 states have call predecessors, (46), 46 states have return successors, (92), 53 states have call predecessors, (92), 46 states have call successors, (92) [2021-12-28 05:49:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1421 states to 1421 states and 1883 transitions. [2021-12-28 05:49:47,400 INFO L78 Accepts]: Start accepts. Automaton has 1421 states and 1883 transitions. Word has length 54 [2021-12-28 05:49:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:47,400 INFO L470 AbstractCegarLoop]: Abstraction has 1421 states and 1883 transitions. [2021-12-28 05:49:47,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1421 states and 1883 transitions. [2021-12-28 05:49:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:49:47,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:47,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:47,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-12-28 05:49:47,401 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash 167147025, now seen corresponding path program 1 times [2021-12-28 05:49:47,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868626907] [2021-12-28 05:49:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:47,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:47,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868626907] [2021-12-28 05:49:47,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868626907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:47,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:47,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:49:47,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725586672] [2021-12-28 05:49:47,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:47,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-28 05:49:47,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:47,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-28 05:49:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-28 05:49:47,570 INFO L87 Difference]: Start difference. First operand 1421 states and 1883 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:47,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:47,851 INFO L93 Difference]: Finished difference Result 2036 states and 2686 transitions. [2021-12-28 05:49:47,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 05:49:47,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:49:47,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:47,855 INFO L225 Difference]: With dead ends: 2036 [2021-12-28 05:49:47,855 INFO L226 Difference]: Without dead ends: 2036 [2021-12-28 05:49:47,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2021-12-28 05:49:47,855 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 923 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:47,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 973 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:49:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2021-12-28 05:49:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1715. [2021-12-28 05:49:47,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1715 states, 1554 states have (on average 1.3468468468468469) internal successors, (2093), 1614 states have internal predecessors, (2093), 62 states have call successors, (62), 31 states have call predecessors, (62), 62 states have return successors, (124), 69 states have call predecessors, (124), 62 states have call successors, (124) [2021-12-28 05:49:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2279 transitions. [2021-12-28 05:49:47,874 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2279 transitions. Word has length 54 [2021-12-28 05:49:47,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:47,874 INFO L470 AbstractCegarLoop]: Abstraction has 1715 states and 2279 transitions. [2021-12-28 05:49:47,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:47,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2279 transitions. [2021-12-28 05:49:47,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-28 05:49:47,876 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:47,876 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:47,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-12-28 05:49:47,876 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1735229320, now seen corresponding path program 1 times [2021-12-28 05:49:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:47,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158679688] [2021-12-28 05:49:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:47,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:47,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:48,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:48,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:48,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158679688] [2021-12-28 05:49:48,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158679688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:48,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:48,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-28 05:49:48,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65356346] [2021-12-28 05:49:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:48,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 05:49:48,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 05:49:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-28 05:49:48,095 INFO L87 Difference]: Start difference. First operand 1715 states and 2279 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:48,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:48,852 INFO L93 Difference]: Finished difference Result 3043 states and 4052 transitions. [2021-12-28 05:49:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-28 05:49:48,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 54 [2021-12-28 05:49:48,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:48,880 INFO L225 Difference]: With dead ends: 3043 [2021-12-28 05:49:48,880 INFO L226 Difference]: Without dead ends: 3043 [2021-12-28 05:49:48,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2021-12-28 05:49:48,880 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 846 mSDsluCounter, 2216 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:48,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2544 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-28 05:49:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3043 states. [2021-12-28 05:49:48,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3043 to 1497. [2021-12-28 05:49:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1360 states have (on average 1.35) internal successors, (1836), 1414 states have internal predecessors, (1836), 50 states have call successors, (50), 25 states have call predecessors, (50), 50 states have return successors, (100), 57 states have call predecessors, (100), 50 states have call successors, (100) [2021-12-28 05:49:48,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 1986 transitions. [2021-12-28 05:49:48,902 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 1986 transitions. Word has length 54 [2021-12-28 05:49:48,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:48,903 INFO L470 AbstractCegarLoop]: Abstraction has 1497 states and 1986 transitions. [2021-12-28 05:49:48,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 12 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:48,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 1986 transitions. [2021-12-28 05:49:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:49:48,904 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:48,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:48,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-12-28 05:49:48,904 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:48,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1769661897, now seen corresponding path program 1 times [2021-12-28 05:49:48,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:48,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498336606] [2021-12-28 05:49:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:48,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:49,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498336606] [2021-12-28 05:49:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498336606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:49,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:49,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-28 05:49:49,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472289048] [2021-12-28 05:49:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:49,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:49:49,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:49,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:49:49,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:49:49,294 INFO L87 Difference]: Start difference. First operand 1497 states and 1986 transitions. Second operand has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:50,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:50,797 INFO L93 Difference]: Finished difference Result 2770 states and 3674 transitions. [2021-12-28 05:49:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-28 05:49:50,798 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-28 05:49:50,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:50,801 INFO L225 Difference]: With dead ends: 2770 [2021-12-28 05:49:50,802 INFO L226 Difference]: Without dead ends: 2770 [2021-12-28 05:49:50,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=439, Invalid=1541, Unknown=0, NotChecked=0, Total=1980 [2021-12-28 05:49:50,802 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 2276 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:50,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2278 Valid, 1306 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:49:50,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2021-12-28 05:49:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1509. [2021-12-28 05:49:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1372 states have (on average 1.349125364431487) internal successors, (1851), 1426 states have internal predecessors, (1851), 50 states have call successors, (50), 25 states have call predecessors, (50), 50 states have return successors, (100), 57 states have call predecessors, (100), 50 states have call successors, (100) [2021-12-28 05:49:50,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2001 transitions. [2021-12-28 05:49:50,822 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2001 transitions. Word has length 56 [2021-12-28 05:49:50,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:50,823 INFO L470 AbstractCegarLoop]: Abstraction has 1509 states and 2001 transitions. [2021-12-28 05:49:50,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:50,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2001 transitions. [2021-12-28 05:49:50,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:49:50,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:50,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:50,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-28 05:49:50,824 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:50,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1715958773, now seen corresponding path program 1 times [2021-12-28 05:49:50,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:50,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10955931] [2021-12-28 05:49:50,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:50,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:50,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:50,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:50,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10955931] [2021-12-28 05:49:50,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10955931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:50,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:50,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 05:49:50,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243988703] [2021-12-28 05:49:50,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:50,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-28 05:49:50,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:50,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-28 05:49:50,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:50,953 INFO L87 Difference]: Start difference. First operand 1509 states and 2001 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:51,285 INFO L93 Difference]: Finished difference Result 2126 states and 2807 transitions. [2021-12-28 05:49:51,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-28 05:49:51,294 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-28 05:49:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:51,297 INFO L225 Difference]: With dead ends: 2126 [2021-12-28 05:49:51,297 INFO L226 Difference]: Without dead ends: 2126 [2021-12-28 05:49:51,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2021-12-28 05:49:51,298 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 883 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:51,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 813 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-28 05:49:51,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2021-12-28 05:49:51,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 1803. [2021-12-28 05:49:51,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1803 states, 1634 states have (on average 1.3457772337821297) internal successors, (2199), 1696 states have internal predecessors, (2199), 66 states have call successors, (66), 33 states have call predecessors, (66), 66 states have return successors, (132), 73 states have call predecessors, (132), 66 states have call successors, (132) [2021-12-28 05:49:51,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2397 transitions. [2021-12-28 05:49:51,318 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2397 transitions. Word has length 56 [2021-12-28 05:49:51,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:51,319 INFO L470 AbstractCegarLoop]: Abstraction has 1803 states and 2397 transitions. [2021-12-28 05:49:51,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:51,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2397 transitions. [2021-12-28 05:49:51,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-28 05:49:51,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:51,320 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:49:51,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-28 05:49:51,320 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash -773838198, now seen corresponding path program 1 times [2021-12-28 05:49:51,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615629083] [2021-12-28 05:49:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:51,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:51,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:51,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 05:49:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-28 05:49:51,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:51,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615629083] [2021-12-28 05:49:51,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615629083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:51,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:51,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:49:51,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947971531] [2021-12-28 05:49:51,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:51,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 05:49:51,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 05:49:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:49:51,369 INFO L87 Difference]: Start difference. First operand 1803 states and 2397 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:49:51,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:51,435 INFO L93 Difference]: Finished difference Result 2155 states and 2840 transitions. [2021-12-28 05:49:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 05:49:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-28 05:49:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:51,438 INFO L225 Difference]: With dead ends: 2155 [2021-12-28 05:49:51,438 INFO L226 Difference]: Without dead ends: 2155 [2021-12-28 05:49:51,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-28 05:49:51,439 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 453 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:51,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 392 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:49:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2021-12-28 05:49:51,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1802. [2021-12-28 05:49:51,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1634 states have (on average 1.3347613219094248) internal successors, (2181), 1695 states have internal predecessors, (2181), 66 states have call successors, (66), 33 states have call predecessors, (66), 66 states have return successors, (132), 73 states have call predecessors, (132), 66 states have call successors, (132) [2021-12-28 05:49:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2379 transitions. [2021-12-28 05:49:51,458 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2379 transitions. Word has length 57 [2021-12-28 05:49:51,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:51,458 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 2379 transitions. [2021-12-28 05:49:51,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-28 05:49:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2379 transitions. [2021-12-28 05:49:51,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-28 05:49:51,459 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:51,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:49:51,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-28 05:49:51,459 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:51,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:51,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1106607972, now seen corresponding path program 1 times [2021-12-28 05:49:51,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:51,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460047922] [2021-12-28 05:49:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:51,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:51,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460047922] [2021-12-28 05:49:51,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460047922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:51,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:51,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-28 05:49:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028961208] [2021-12-28 05:49:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:51,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 05:49:51,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 05:49:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-28 05:49:51,685 INFO L87 Difference]: Start difference. First operand 1802 states and 2379 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:52,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:52,365 INFO L93 Difference]: Finished difference Result 2781 states and 3648 transitions. [2021-12-28 05:49:52,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-28 05:49:52,365 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-28 05:49:52,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:52,369 INFO L225 Difference]: With dead ends: 2781 [2021-12-28 05:49:52,369 INFO L226 Difference]: Without dead ends: 2781 [2021-12-28 05:49:52,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2021-12-28 05:49:52,370 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 890 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:52,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 2117 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:49:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2021-12-28 05:49:52,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 1500. [2021-12-28 05:49:52,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1364 states have (on average 1.3394428152492668) internal successors, (1827), 1417 states have internal predecessors, (1827), 50 states have call successors, (50), 25 states have call predecessors, (50), 50 states have return successors, (100), 57 states have call predecessors, (100), 50 states have call successors, (100) [2021-12-28 05:49:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 1977 transitions. [2021-12-28 05:49:52,420 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 1977 transitions. Word has length 56 [2021-12-28 05:49:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:52,420 INFO L470 AbstractCegarLoop]: Abstraction has 1500 states and 1977 transitions. [2021-12-28 05:49:52,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 05:49:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 1977 transitions. [2021-12-28 05:49:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 05:49:52,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:52,421 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-28 05:49:52,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-12-28 05:49:52,422 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:52,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1780819851, now seen corresponding path program 1 times [2021-12-28 05:49:52,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:52,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814653214] [2021-12-28 05:49:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:52,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:52,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 05:49:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:52,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:49:52,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:52,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814653214] [2021-12-28 05:49:52,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814653214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:49:52,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:49:52,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-28 05:49:52,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62374255] [2021-12-28 05:49:52,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:49:52,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 05:49:52,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 05:49:52,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-28 05:49:52,770 INFO L87 Difference]: Start difference. First operand 1500 states and 1977 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:53,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:53,680 INFO L93 Difference]: Finished difference Result 3526 states and 4713 transitions. [2021-12-28 05:49:53,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-28 05:49:53,680 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2021-12-28 05:49:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:53,700 INFO L225 Difference]: With dead ends: 3526 [2021-12-28 05:49:53,701 INFO L226 Difference]: Without dead ends: 3524 [2021-12-28 05:49:53,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=329, Invalid=931, Unknown=0, NotChecked=0, Total=1260 [2021-12-28 05:49:53,703 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 1763 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1763 SdHoareTripleChecker+Valid, 2621 SdHoareTripleChecker+Invalid, 1154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:53,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1763 Valid, 2621 Invalid, 1154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 05:49:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3524 states. [2021-12-28 05:49:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3524 to 1602. [2021-12-28 05:49:53,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1454 states have (on average 1.3321870701513068) internal successors, (1937), 1510 states have internal predecessors, (1937), 56 states have call successors, (56), 28 states have call predecessors, (56), 56 states have return successors, (112), 63 states have call predecessors, (112), 56 states have call successors, (112) [2021-12-28 05:49:53,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2105 transitions. [2021-12-28 05:49:53,757 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2105 transitions. Word has length 58 [2021-12-28 05:49:53,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:53,758 INFO L470 AbstractCegarLoop]: Abstraction has 1602 states and 2105 transitions. [2021-12-28 05:49:53,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 05:49:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2105 transitions. [2021-12-28 05:49:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 05:49:53,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:53,759 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2021-12-28 05:49:53,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-28 05:49:53,759 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:53,759 INFO L85 PathProgramCache]: Analyzing trace with hash 765562808, now seen corresponding path program 1 times [2021-12-28 05:49:53,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:53,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167398000] [2021-12-28 05:49:53,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:53,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:54,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:49:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:54,104 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-28 05:49:54,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167398000] [2021-12-28 05:49:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167398000] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408365531] [2021-12-28 05:49:54,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:54,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:54,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:54,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:54,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 05:49:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:54,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-28 05:49:54,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:54,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:49:54,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:49:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:54,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2021-12-28 05:49:54,781 INFO L353 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-28 05:49:54,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-28 05:49:54,846 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 05:49:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:54,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:49:54,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408365531] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:54,913 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:49:54,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 26 [2021-12-28 05:49:54,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494463363] [2021-12-28 05:49:54,914 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:49:54,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 05:49:54,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:54,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 05:49:54,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2021-12-28 05:49:54,915 INFO L87 Difference]: Start difference. First operand 1602 states and 2105 transitions. Second operand has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:49:56,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:49:56,100 INFO L93 Difference]: Finished difference Result 2802 states and 3668 transitions. [2021-12-28 05:49:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-28 05:49:56,102 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2021-12-28 05:49:56,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:49:56,118 INFO L225 Difference]: With dead ends: 2802 [2021-12-28 05:49:56,118 INFO L226 Difference]: Without dead ends: 2802 [2021-12-28 05:49:56,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2021-12-28 05:49:56,119 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2879 mSDsluCounter, 2259 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-28 05:49:56,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2880 Valid, 2452 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-28 05:49:56,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-12-28 05:49:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1632. [2021-12-28 05:49:56,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1484 states have (on average 1.3335579514824798) internal successors, (1979), 1537 states have internal predecessors, (1979), 56 states have call successors, (56), 28 states have call predecessors, (56), 56 states have return successors, (112), 66 states have call predecessors, (112), 56 states have call successors, (112) [2021-12-28 05:49:56,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2147 transitions. [2021-12-28 05:49:56,154 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2147 transitions. Word has length 58 [2021-12-28 05:49:56,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:49:56,154 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 2147 transitions. [2021-12-28 05:49:56,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.0) internal successors, (104), 24 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:49:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2147 transitions. [2021-12-28 05:49:56,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 05:49:56,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:49:56,155 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2021-12-28 05:49:56,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-28 05:49:56,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:56,372 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:49:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:49:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash 765562809, now seen corresponding path program 1 times [2021-12-28 05:49:56,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:49:56,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396536707] [2021-12-28 05:49:56,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:56,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:49:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:56,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:49:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:49:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:49:56,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:49:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396536707] [2021-12-28 05:49:56,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396536707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921892518] [2021-12-28 05:49:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:49:56,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:49:56,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:49:56,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:49:56,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 05:49:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:49:56,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-28 05:49:56,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:49:57,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:49:57,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:49:57,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:49:57,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:57,510 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-12-28 05:49:57,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:57,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2021-12-28 05:49:57,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:49:57,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-28 05:49:57,722 INFO L353 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-28 05:49:57,722 INFO L387 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 17 treesize of output 17 [2021-12-28 05:49:57,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:57,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 14 [2021-12-28 05:49:57,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:49:57,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2021-12-28 05:49:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:49:57,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:49:58,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921892518] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:49:58,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:49:58,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 32 [2021-12-28 05:49:58,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436819331] [2021-12-28 05:49:58,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:49:58,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 05:49:58,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:49:58,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 05:49:58,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-12-28 05:49:58,349 INFO L87 Difference]: Start difference. First operand 1632 states and 2147 transitions. Second operand has 33 states, 32 states have (on average 3.34375) internal successors, (107), 30 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:50:01,514 INFO L93 Difference]: Finished difference Result 3320 states and 4309 transitions. [2021-12-28 05:50:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-28 05:50:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.34375) internal successors, (107), 30 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2021-12-28 05:50:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:50:01,518 INFO L225 Difference]: With dead ends: 3320 [2021-12-28 05:50:01,519 INFO L226 Difference]: Without dead ends: 3320 [2021-12-28 05:50:01,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1114, Invalid=5528, Unknown=0, NotChecked=0, Total=6642 [2021-12-28 05:50:01,520 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 4119 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4120 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 3006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:50:01,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4120 Valid, 3274 Invalid, 3006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-28 05:50:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3320 states. [2021-12-28 05:50:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3320 to 1642. [2021-12-28 05:50:01,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1494 states have (on average 1.3326639892904952) internal successors, (1991), 1546 states have internal predecessors, (1991), 56 states have call successors, (56), 28 states have call predecessors, (56), 56 states have return successors, (112), 67 states have call predecessors, (112), 56 states have call successors, (112) [2021-12-28 05:50:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2159 transitions. [2021-12-28 05:50:01,559 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2159 transitions. Word has length 58 [2021-12-28 05:50:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:50:01,559 INFO L470 AbstractCegarLoop]: Abstraction has 1642 states and 2159 transitions. [2021-12-28 05:50:01,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.34375) internal successors, (107), 30 states have internal predecessors, (107), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:01,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2159 transitions. [2021-12-28 05:50:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-28 05:50:01,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:50:01,560 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-12-28 05:50:01,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 05:50:01,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:50:01,778 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:50:01,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:50:01,778 INFO L85 PathProgramCache]: Analyzing trace with hash -581458318, now seen corresponding path program 1 times [2021-12-28 05:50:01,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:50:01,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553900757] [2021-12-28 05:50:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:01,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:50:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:02,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:50:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-28 05:50:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:50:02,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:50:02,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553900757] [2021-12-28 05:50:02,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553900757] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:50:02,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959471846] [2021-12-28 05:50:02,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:02,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:50:02,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:50:02,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:50:02,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 05:50:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:02,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-28 05:50:02,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:50:03,247 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:50:03,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:50:03,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 23 [2021-12-28 05:50:03,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:50:03,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:50:03,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:50:03,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 05:50:03,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 64 [2021-12-28 05:50:03,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:50:03,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:50:03,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959471846] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:50:03,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:50:03,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2021-12-28 05:50:03,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837134494] [2021-12-28 05:50:03,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:50:03,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-28 05:50:03,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:50:03,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-28 05:50:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2021-12-28 05:50:03,938 INFO L87 Difference]: Start difference. First operand 1642 states and 2159 transitions. Second operand has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 31 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:09,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:50:09,900 INFO L93 Difference]: Finished difference Result 4822 states and 6344 transitions. [2021-12-28 05:50:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-28 05:50:09,900 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 31 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 58 [2021-12-28 05:50:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:50:09,905 INFO L225 Difference]: With dead ends: 4822 [2021-12-28 05:50:09,905 INFO L226 Difference]: Without dead ends: 4818 [2021-12-28 05:50:09,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2367 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1530, Invalid=8370, Unknown=0, NotChecked=0, Total=9900 [2021-12-28 05:50:09,906 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 3605 mSDsluCounter, 12327 mSDsCounter, 0 mSdLazyCounter, 6323 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3605 SdHoareTripleChecker+Valid, 12909 SdHoareTripleChecker+Invalid, 6702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 6323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 05:50:09,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3605 Valid, 12909 Invalid, 6702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 6323 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-28 05:50:09,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4818 states. [2021-12-28 05:50:09,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4818 to 1499. [2021-12-28 05:50:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1367 states have (on average 1.3350402340892464) internal successors, (1825), 1415 states have internal predecessors, (1825), 48 states have call successors, (48), 24 states have call predecessors, (48), 48 states have return successors, (96), 59 states have call predecessors, (96), 48 states have call successors, (96) [2021-12-28 05:50:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1969 transitions. [2021-12-28 05:50:09,941 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1969 transitions. Word has length 58 [2021-12-28 05:50:09,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:50:09,941 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1969 transitions. [2021-12-28 05:50:09,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.1818181818181817) internal successors, (105), 31 states have internal predecessors, (105), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1969 transitions. [2021-12-28 05:50:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 05:50:09,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:50:09,942 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:50:09,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 05:50:10,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-12-28 05:50:10,159 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:50:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:50:10,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1541651178, now seen corresponding path program 1 times [2021-12-28 05:50:10,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:50:10,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760349943] [2021-12-28 05:50:10,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:10,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:50:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:50:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:10,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:50:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:50:10,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:50:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760349943] [2021-12-28 05:50:10,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760349943] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:50:10,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116755670] [2021-12-28 05:50:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:10,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:50:10,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:50:10,610 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:50:10,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 05:50:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:10,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-28 05:50:10,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:50:10,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:50:11,320 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:50:11,514 INFO L353 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-28 05:50:11,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 37 [2021-12-28 05:50:11,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:50:11,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 05:50:11,633 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:50:11,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 05:50:11,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116755670] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:50:11,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 05:50:11,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-28 05:50:11,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355130910] [2021-12-28 05:50:11,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 05:50:11,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-28 05:50:11,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:50:11,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-28 05:50:11,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-28 05:50:11,695 INFO L87 Difference]: Start difference. First operand 1499 states and 1969 transitions. Second operand has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:50:12,297 INFO L93 Difference]: Finished difference Result 3114 states and 4112 transitions. [2021-12-28 05:50:12,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 05:50:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 59 [2021-12-28 05:50:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:50:12,301 INFO L225 Difference]: With dead ends: 3114 [2021-12-28 05:50:12,301 INFO L226 Difference]: Without dead ends: 3114 [2021-12-28 05:50:12,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2021-12-28 05:50:12,301 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1220 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 05:50:12,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 2212 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 767 Invalid, 0 Unknown, 176 Unchecked, 0.3s Time] [2021-12-28 05:50:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2021-12-28 05:50:12,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2855. [2021-12-28 05:50:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2855 states, 2614 states have (on average 1.3416220351951034) internal successors, (3507), 2692 states have internal predecessors, (3507), 101 states have call successors, (101), 52 states have call predecessors, (101), 104 states have return successors, (202), 110 states have call predecessors, (202), 101 states have call successors, (202) [2021-12-28 05:50:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2855 states to 2855 states and 3810 transitions. [2021-12-28 05:50:12,326 INFO L78 Accepts]: Start accepts. Automaton has 2855 states and 3810 transitions. Word has length 59 [2021-12-28 05:50:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:50:12,326 INFO L470 AbstractCegarLoop]: Abstraction has 2855 states and 3810 transitions. [2021-12-28 05:50:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.142857142857143) internal successors, (108), 20 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-28 05:50:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2855 states and 3810 transitions. [2021-12-28 05:50:12,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-28 05:50:12,327 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:50:12,327 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:50:12,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 05:50:12,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:50:12,543 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 63 more)] === [2021-12-28 05:50:12,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:50:12,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1541651179, now seen corresponding path program 1 times [2021-12-28 05:50:12,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:50:12,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830575964] [2021-12-28 05:50:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:12,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:50:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 05:50:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:12,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 05:50:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:50:12,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:50:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830575964] [2021-12-28 05:50:12,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830575964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 05:50:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570620072] [2021-12-28 05:50:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:50:12,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 05:50:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:50:12,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 05:50:12,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 05:50:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:50:12,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-28 05:50:12,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:50:13,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:50:13,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 05:50:13,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:50:13,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-28 05:50:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:50:13,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-28 05:50:13,931 INFO L353 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-28 05:50:13,932 INFO L387 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 19 treesize of output 19 [2021-12-28 05:50:14,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:50:14,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2021-12-28 05:50:14,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 05:50:14,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 14 [2021-12-28 05:50:14,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:50:14,210 INFO L328 TraceCheckSpWp]: Computing backward predicates...