./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd6854ce29c7bf580cd3e782b287f65f1203c66552ea1ec9f0128f94f0f3ec92 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 11:43:52,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 11:43:52,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 11:43:52,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 11:43:52,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 11:43:52,036 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 11:43:52,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 11:43:52,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 11:43:52,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 11:43:52,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 11:43:52,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 11:43:52,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 11:43:52,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 11:43:52,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 11:43:52,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 11:43:52,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 11:43:52,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 11:43:52,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 11:43:52,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 11:43:52,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 11:43:52,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 11:43:52,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 11:43:52,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 11:43:52,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 11:43:52,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 11:43:52,079 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 11:43:52,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 11:43:52,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 11:43:52,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 11:43:52,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 11:43:52,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 11:43:52,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 11:43:52,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 11:43:52,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 11:43:52,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 11:43:52,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 11:43:52,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 11:43:52,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 11:43:52,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 11:43:52,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 11:43:52,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 11:43:52,100 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 11:43:52,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 11:43:52,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 11:43:52,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 11:43:52,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 11:43:52,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 11:43:52,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 11:43:52,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 11:43:52,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 11:43:52,130 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 11:43:52,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 11:43:52,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 11:43:52,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 11:43:52,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 11:43:52,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 11:43:52,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 11:43:52,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 11:43:52,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 11:43:52,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 11:43:52,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:43:52,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 11:43:52,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 11:43:52,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 11:43:52,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 11:43:52,135 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6854ce29c7bf580cd3e782b287f65f1203c66552ea1ec9f0128f94f0f3ec92 [2021-12-14 11:43:52,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 11:43:52,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 11:43:52,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 11:43:52,342 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 11:43:52,342 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 11:43:52,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c [2021-12-14 11:43:52,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c086770ca/acf3080a3c0c4120b38664e94915f91f/FLAG10076941b [2021-12-14 11:43:52,741 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 11:43:52,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c [2021-12-14 11:43:52,767 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c086770ca/acf3080a3c0c4120b38664e94915f91f/FLAG10076941b [2021-12-14 11:43:53,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c086770ca/acf3080a3c0c4120b38664e94915f91f [2021-12-14 11:43:53,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 11:43:53,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 11:43:53,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 11:43:53,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 11:43:53,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 11:43:53,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d4db0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53, skipping insertion in model container [2021-12-14 11:43:53,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 11:43:53,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 11:43:53,330 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c[37413,37426] [2021-12-14 11:43:53,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:43:53,339 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 11:43:53,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_clnt_3.cil-1.c[37413,37426] [2021-12-14 11:43:53,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 11:43:53,401 INFO L208 MainTranslator]: Completed translation [2021-12-14 11:43:53,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53 WrapperNode [2021-12-14 11:43:53,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 11:43:53,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 11:43:53,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 11:43:53,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 11:43:53,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,440 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 475 [2021-12-14 11:43:53,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 11:43:53,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 11:43:53,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 11:43:53,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 11:43:53,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 11:43:53,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 11:43:53,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 11:43:53,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 11:43:53,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (1/1) ... [2021-12-14 11:43:53,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 11:43:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:43:53,490 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) [2021-12-14 11:43:53,522 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 [2021-12-14 11:43:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 11:43:53,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 11:43:53,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 11:43:53,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 11:43:53,602 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 11:43:53,603 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 11:43:53,612 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 11:43:53,872 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-12-14 11:43:53,872 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-12-14 11:43:53,873 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 11:43:53,879 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 11:43:53,880 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 11:43:53,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:53 BoogieIcfgContainer [2021-12-14 11:43:53,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 11:43:53,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 11:43:53,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 11:43:53,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 11:43:53,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 11:43:53" (1/3) ... [2021-12-14 11:43:53,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611ae733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:43:53, skipping insertion in model container [2021-12-14 11:43:53,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:43:53" (2/3) ... [2021-12-14 11:43:53,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611ae733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 11:43:53, skipping insertion in model container [2021-12-14 11:43:53,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:53" (3/3) ... [2021-12-14 11:43:53,905 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_3.cil-1.c [2021-12-14 11:43:53,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 11:43:53,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 11:43:53,950 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 11:43:53,955 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 11:43:53,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 11:43:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.7377049180327868) internal successors, (212), 123 states have internal predecessors, (212), 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) [2021-12-14 11:43:53,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 11:43:53,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:53,975 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] [2021-12-14 11:43:53,976 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:53,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:53,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1457697026, now seen corresponding path program 1 times [2021-12-14 11:43:53,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:53,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871709804] [2021-12-14 11:43:53,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:53,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:54,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:54,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871709804] [2021-12-14 11:43:54,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871709804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:54,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:54,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:54,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058391006] [2021-12-14 11:43:54,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:54,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:54,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,190 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.7377049180327868) internal successors, (212), 123 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:54,302 INFO L93 Difference]: Finished difference Result 244 states and 419 transitions. [2021-12-14 11:43:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 11:43:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:54,310 INFO L225 Difference]: With dead ends: 244 [2021-12-14 11:43:54,310 INFO L226 Difference]: Without dead ends: 112 [2021-12-14 11:43:54,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,315 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:54,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 317 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-12-14 11:43:54,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2021-12-14 11:43:54,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.5225225225225225) internal successors, (169), 111 states have internal predecessors, (169), 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) [2021-12-14 11:43:54,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 169 transitions. [2021-12-14 11:43:54,342 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 169 transitions. Word has length 24 [2021-12-14 11:43:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:54,342 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 169 transitions. [2021-12-14 11:43:54,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 169 transitions. [2021-12-14 11:43:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 11:43:54,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:54,344 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] [2021-12-14 11:43:54,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 11:43:54,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:54,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:54,345 INFO L85 PathProgramCache]: Analyzing trace with hash -611475394, now seen corresponding path program 1 times [2021-12-14 11:43:54,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:54,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154002418] [2021-12-14 11:43:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:54,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 11:43:54,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:54,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154002418] [2021-12-14 11:43:54,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154002418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:54,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:54,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:54,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974443646] [2021-12-14 11:43:54,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:54,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:54,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:54,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:54,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,395 INFO L87 Difference]: Start difference. First operand 112 states and 169 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:54,498 INFO L93 Difference]: Finished difference Result 232 states and 354 transitions. [2021-12-14 11:43:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-14 11:43:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:54,501 INFO L225 Difference]: With dead ends: 232 [2021-12-14 11:43:54,502 INFO L226 Difference]: Without dead ends: 130 [2021-12-14 11:43:54,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,507 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 13 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:54,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 238 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:54,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-14 11:43:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2021-12-14 11:43:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5) internal successors, (189), 126 states have internal predecessors, (189), 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) [2021-12-14 11:43:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 189 transitions. [2021-12-14 11:43:54,527 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 189 transitions. Word has length 36 [2021-12-14 11:43:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:54,527 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 189 transitions. [2021-12-14 11:43:54,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 189 transitions. [2021-12-14 11:43:54,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 11:43:54,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:54,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:54,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 11:43:54,534 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -114868729, now seen corresponding path program 1 times [2021-12-14 11:43:54,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:54,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005977931] [2021-12-14 11:43:54,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:54,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:54,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-14 11:43:54,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:54,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005977931] [2021-12-14 11:43:54,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005977931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:54,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:54,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:54,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64179311] [2021-12-14 11:43:54,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:54,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:54,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:54,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:54,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,629 INFO L87 Difference]: Start difference. First operand 127 states and 189 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-12-14 11:43:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:54,717 INFO L93 Difference]: Finished difference Result 266 states and 402 transitions. [2021-12-14 11:43:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 50 [2021-12-14 11:43:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:54,719 INFO L225 Difference]: With dead ends: 266 [2021-12-14 11:43:54,719 INFO L226 Difference]: Without dead ends: 149 [2021-12-14 11:43:54,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,726 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 17 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:54,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 251 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-14 11:43:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 144. [2021-12-14 11:43:54,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4755244755244756) internal successors, (211), 143 states have internal predecessors, (211), 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) [2021-12-14 11:43:54,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 211 transitions. [2021-12-14 11:43:54,741 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 211 transitions. Word has length 50 [2021-12-14 11:43:54,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:54,741 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 211 transitions. [2021-12-14 11:43:54,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-12-14 11:43:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 211 transitions. [2021-12-14 11:43:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 11:43:54,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:54,745 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:54,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 11:43:54,746 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -682645784, now seen corresponding path program 1 times [2021-12-14 11:43:54,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:54,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364017149] [2021-12-14 11:43:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:54,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 11:43:54,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364017149] [2021-12-14 11:43:54,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364017149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:54,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:54,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:54,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286967501] [2021-12-14 11:43:54,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:54,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:54,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,809 INFO L87 Difference]: Start difference. First operand 144 states and 211 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-14 11:43:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:54,909 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2021-12-14 11:43:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:54,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 67 [2021-12-14 11:43:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:54,911 INFO L225 Difference]: With dead ends: 328 [2021-12-14 11:43:54,912 INFO L226 Difference]: Without dead ends: 193 [2021-12-14 11:43:54,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,921 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 52 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:54,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 224 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:54,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-14 11:43:54,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 185. [2021-12-14 11:43:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.4184782608695652) internal successors, (261), 184 states have internal predecessors, (261), 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) [2021-12-14 11:43:54,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 261 transitions. [2021-12-14 11:43:54,930 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 261 transitions. Word has length 67 [2021-12-14 11:43:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 261 transitions. [2021-12-14 11:43:54,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-14 11:43:54,931 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 261 transitions. [2021-12-14 11:43:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-14 11:43:54,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:54,932 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:54,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 11:43:54,932 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:54,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:54,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1806883178, now seen corresponding path program 1 times [2021-12-14 11:43:54,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:54,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033143732] [2021-12-14 11:43:54,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:54,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 11:43:54,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033143732] [2021-12-14 11:43:54,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033143732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:54,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:54,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:54,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273382550] [2021-12-14 11:43:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:54,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:54,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:54,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:54,968 INFO L87 Difference]: Start difference. First operand 185 states and 261 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-14 11:43:55,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,039 INFO L93 Difference]: Finished difference Result 383 states and 548 transitions. [2021-12-14 11:43:55,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 67 [2021-12-14 11:43:55,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,040 INFO L225 Difference]: With dead ends: 383 [2021-12-14 11:43:55,040 INFO L226 Difference]: Without dead ends: 208 [2021-12-14 11:43:55,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,041 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 15 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 256 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:55,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-14 11:43:55,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2021-12-14 11:43:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4039408866995073) internal successors, (285), 203 states have internal predecessors, (285), 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) [2021-12-14 11:43:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 285 transitions. [2021-12-14 11:43:55,046 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 285 transitions. Word has length 67 [2021-12-14 11:43:55,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,046 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 285 transitions. [2021-12-14 11:43:55,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2021-12-14 11:43:55,046 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 285 transitions. [2021-12-14 11:43:55,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-12-14 11:43:55,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,047 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 11:43:55,047 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 170492736, now seen corresponding path program 1 times [2021-12-14 11:43:55,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304973959] [2021-12-14 11:43:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-14 11:43:55,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304973959] [2021-12-14 11:43:55,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304973959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727012896] [2021-12-14 11:43:55,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,080 INFO L87 Difference]: Start difference. First operand 204 states and 285 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-14 11:43:55,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,154 INFO L93 Difference]: Finished difference Result 422 states and 598 transitions. [2021-12-14 11:43:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 83 [2021-12-14 11:43:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,157 INFO L225 Difference]: With dead ends: 422 [2021-12-14 11:43:55,157 INFO L226 Difference]: Without dead ends: 228 [2021-12-14 11:43:55,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,159 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 13 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 255 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-14 11:43:55,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 225. [2021-12-14 11:43:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3883928571428572) internal successors, (311), 224 states have internal predecessors, (311), 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) [2021-12-14 11:43:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 311 transitions. [2021-12-14 11:43:55,167 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 311 transitions. Word has length 83 [2021-12-14 11:43:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,168 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 311 transitions. [2021-12-14 11:43:55,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-12-14 11:43:55,168 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 311 transitions. [2021-12-14 11:43:55,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-14 11:43:55,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,169 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 11:43:55,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1976749000, now seen corresponding path program 1 times [2021-12-14 11:43:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568922314] [2021-12-14 11:43:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 11:43:55,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568922314] [2021-12-14 11:43:55,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568922314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984831596] [2021-12-14 11:43:55,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,222 INFO L87 Difference]: Start difference. First operand 225 states and 311 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:55,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,241 INFO L93 Difference]: Finished difference Result 652 states and 903 transitions. [2021-12-14 11:43:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-14 11:43:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,242 INFO L225 Difference]: With dead ends: 652 [2021-12-14 11:43:55,243 INFO L226 Difference]: Without dead ends: 437 [2021-12-14 11:43:55,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,244 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 123 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 356 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-12-14 11:43:55,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-12-14 11:43:55,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.3761467889908257) internal successors, (600), 436 states have internal predecessors, (600), 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) [2021-12-14 11:43:55,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 600 transitions. [2021-12-14 11:43:55,250 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 600 transitions. Word has length 103 [2021-12-14 11:43:55,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,250 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 600 transitions. [2021-12-14 11:43:55,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:55,251 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 600 transitions. [2021-12-14 11:43:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 11:43:55,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,252 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 11:43:55,252 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,252 INFO L85 PathProgramCache]: Analyzing trace with hash -102965200, now seen corresponding path program 1 times [2021-12-14 11:43:55,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169073489] [2021-12-14 11:43:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,274 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-14 11:43:55,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169073489] [2021-12-14 11:43:55,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169073489] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554563413] [2021-12-14 11:43:55,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,276 INFO L87 Difference]: Start difference. First operand 437 states and 600 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-12-14 11:43:55,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,291 INFO L93 Difference]: Finished difference Result 885 states and 1214 transitions. [2021-12-14 11:43:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 104 [2021-12-14 11:43:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,293 INFO L225 Difference]: With dead ends: 885 [2021-12-14 11:43:55,293 INFO L226 Difference]: Without dead ends: 458 [2021-12-14 11:43:55,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,294 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 11 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 337 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:55,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-12-14 11:43:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2021-12-14 11:43:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 1.3719912472647702) internal successors, (627), 457 states have internal predecessors, (627), 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) [2021-12-14 11:43:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 627 transitions. [2021-12-14 11:43:55,302 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 627 transitions. Word has length 104 [2021-12-14 11:43:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,302 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 627 transitions. [2021-12-14 11:43:55,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2021-12-14 11:43:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 627 transitions. [2021-12-14 11:43:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 11:43:55,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,303 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 11:43:55,304 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,304 INFO L85 PathProgramCache]: Analyzing trace with hash 736068462, now seen corresponding path program 1 times [2021-12-14 11:43:55,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569347997] [2021-12-14 11:43:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,331 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-14 11:43:55,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569347997] [2021-12-14 11:43:55,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569347997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220508423] [2021-12-14 11:43:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,333 INFO L87 Difference]: Start difference. First operand 458 states and 627 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-12-14 11:43:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,346 INFO L93 Difference]: Finished difference Result 932 states and 1274 transitions. [2021-12-14 11:43:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 104 [2021-12-14 11:43:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,348 INFO L225 Difference]: With dead ends: 932 [2021-12-14 11:43:55,348 INFO L226 Difference]: Without dead ends: 484 [2021-12-14 11:43:55,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,349 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 309 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:55,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-12-14 11:43:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-12-14 11:43:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 483 states have (on average 1.3664596273291925) internal successors, (660), 483 states have internal predecessors, (660), 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) [2021-12-14 11:43:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 660 transitions. [2021-12-14 11:43:55,356 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 660 transitions. Word has length 104 [2021-12-14 11:43:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,356 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 660 transitions. [2021-12-14 11:43:55,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2021-12-14 11:43:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 660 transitions. [2021-12-14 11:43:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 11:43:55,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,357 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 11:43:55,358 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1108389378, now seen corresponding path program 1 times [2021-12-14 11:43:55,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876801709] [2021-12-14 11:43:55,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-14 11:43:55,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876801709] [2021-12-14 11:43:55,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876801709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655618703] [2021-12-14 11:43:55,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,384 INFO L87 Difference]: Start difference. First operand 484 states and 660 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-14 11:43:55,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,403 INFO L93 Difference]: Finished difference Result 699 states and 957 transitions. [2021-12-14 11:43:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 105 [2021-12-14 11:43:55,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,406 INFO L225 Difference]: With dead ends: 699 [2021-12-14 11:43:55,406 INFO L226 Difference]: Without dead ends: 697 [2021-12-14 11:43:55,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,407 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 136 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 299 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-12-14 11:43:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2021-12-14 11:43:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 1.3721264367816093) internal successors, (955), 696 states have internal predecessors, (955), 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) [2021-12-14 11:43:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 955 transitions. [2021-12-14 11:43:55,416 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 955 transitions. Word has length 105 [2021-12-14 11:43:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,416 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 955 transitions. [2021-12-14 11:43:55,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2021-12-14 11:43:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 955 transitions. [2021-12-14 11:43:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-14 11:43:55,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,418 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:55,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 11:43:55,418 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash -391134295, now seen corresponding path program 1 times [2021-12-14 11:43:55,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166687432] [2021-12-14 11:43:55,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-14 11:43:55,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166687432] [2021-12-14 11:43:55,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166687432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139178837] [2021-12-14 11:43:55,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,447 INFO L87 Difference]: Start difference. First operand 697 states and 955 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:55,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,551 INFO L93 Difference]: Finished difference Result 1508 states and 2127 transitions. [2021-12-14 11:43:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2021-12-14 11:43:55,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,554 INFO L225 Difference]: With dead ends: 1508 [2021-12-14 11:43:55,554 INFO L226 Difference]: Without dead ends: 844 [2021-12-14 11:43:55,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,556 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 94 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 190 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:55,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2021-12-14 11:43:55,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 814. [2021-12-14 11:43:55,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.4071340713407134) internal successors, (1144), 813 states have internal predecessors, (1144), 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) [2021-12-14 11:43:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1144 transitions. [2021-12-14 11:43:55,567 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1144 transitions. Word has length 159 [2021-12-14 11:43:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,568 INFO L470 AbstractCegarLoop]: Abstraction has 814 states and 1144 transitions. [2021-12-14 11:43:55,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:43:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1144 transitions. [2021-12-14 11:43:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-14 11:43:55,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,570 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 9, 9, 9, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 11:43:55,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 11:43:55,570 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash -408594384, now seen corresponding path program 1 times [2021-12-14 11:43:55,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563458666] [2021-12-14 11:43:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-14 11:43:55,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563458666] [2021-12-14 11:43:55,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563458666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814761088] [2021-12-14 11:43:55,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,599 INFO L87 Difference]: Start difference. First operand 814 states and 1144 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-14 11:43:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,714 INFO L93 Difference]: Finished difference Result 1870 states and 2708 transitions. [2021-12-14 11:43:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 185 [2021-12-14 11:43:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,717 INFO L225 Difference]: With dead ends: 1870 [2021-12-14 11:43:55,717 INFO L226 Difference]: Without dead ends: 1041 [2021-12-14 11:43:55,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,718 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 93 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 198 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-12-14 11:43:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1003. [2021-12-14 11:43:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 1002 states have (on average 1.3932135728542914) internal successors, (1396), 1002 states have internal predecessors, (1396), 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) [2021-12-14 11:43:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1396 transitions. [2021-12-14 11:43:55,732 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1396 transitions. Word has length 185 [2021-12-14 11:43:55,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,732 INFO L470 AbstractCegarLoop]: Abstraction has 1003 states and 1396 transitions. [2021-12-14 11:43:55,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-12-14 11:43:55,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1396 transitions. [2021-12-14 11:43:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-14 11:43:55,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,734 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 11:43:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 11:43:55,735 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash -585141096, now seen corresponding path program 1 times [2021-12-14 11:43:55,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012850803] [2021-12-14 11:43:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2021-12-14 11:43:55,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012850803] [2021-12-14 11:43:55,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012850803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267628333] [2021-12-14 11:43:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,764 INFO L87 Difference]: Start difference. First operand 1003 states and 1396 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-14 11:43:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:55,869 INFO L93 Difference]: Finished difference Result 2126 states and 2985 transitions. [2021-12-14 11:43:55,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:55,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 206 [2021-12-14 11:43:55,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:55,872 INFO L225 Difference]: With dead ends: 2126 [2021-12-14 11:43:55,873 INFO L226 Difference]: Without dead ends: 1114 [2021-12-14 11:43:55,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,874 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 96 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:55,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 194 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:55,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-12-14 11:43:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1078. [2021-12-14 11:43:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.3853296193129063) internal successors, (1492), 1077 states have internal predecessors, (1492), 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) [2021-12-14 11:43:55,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1492 transitions. [2021-12-14 11:43:55,889 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1492 transitions. Word has length 206 [2021-12-14 11:43:55,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:55,890 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1492 transitions. [2021-12-14 11:43:55,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2021-12-14 11:43:55,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1492 transitions. [2021-12-14 11:43:55,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-14 11:43:55,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:55,892 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 11:43:55,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 11:43:55,893 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:55,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:55,893 INFO L85 PathProgramCache]: Analyzing trace with hash 2110600453, now seen corresponding path program 1 times [2021-12-14 11:43:55,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:55,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738948300] [2021-12-14 11:43:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:55,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-14 11:43:55,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:55,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738948300] [2021-12-14 11:43:55,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738948300] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:55,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:55,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:55,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857292226] [2021-12-14 11:43:55,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:55,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:55,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:55,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:55,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:55,926 INFO L87 Difference]: Start difference. First operand 1078 states and 1492 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-12-14 11:43:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,044 INFO L93 Difference]: Finished difference Result 2276 states and 3174 transitions. [2021-12-14 11:43:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 230 [2021-12-14 11:43:56,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,048 INFO L225 Difference]: With dead ends: 2276 [2021-12-14 11:43:56,048 INFO L226 Difference]: Without dead ends: 1195 [2021-12-14 11:43:56,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,050 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 97 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 192 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2021-12-14 11:43:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1162. [2021-12-14 11:43:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.3807062876830318) internal successors, (1603), 1161 states have internal predecessors, (1603), 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) [2021-12-14 11:43:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1603 transitions. [2021-12-14 11:43:56,066 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1603 transitions. Word has length 230 [2021-12-14 11:43:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,066 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 1603 transitions. [2021-12-14 11:43:56,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-12-14 11:43:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1603 transitions. [2021-12-14 11:43:56,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-14 11:43:56,069 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,069 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 11, 11, 11, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-14 11:43:56,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 11:43:56,069 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 77206407, now seen corresponding path program 1 times [2021-12-14 11:43:56,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94328295] [2021-12-14 11:43:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 805 backedges. 477 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-12-14 11:43:56,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94328295] [2021-12-14 11:43:56,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94328295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915156514] [2021-12-14 11:43:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,102 INFO L87 Difference]: Start difference. First operand 1162 states and 1603 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-12-14 11:43:56,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,211 INFO L93 Difference]: Finished difference Result 2444 states and 3399 transitions. [2021-12-14 11:43:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 230 [2021-12-14 11:43:56,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,215 INFO L225 Difference]: With dead ends: 2444 [2021-12-14 11:43:56,215 INFO L226 Difference]: Without dead ends: 1291 [2021-12-14 11:43:56,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,217 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 99 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 190 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-12-14 11:43:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1255. [2021-12-14 11:43:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1254 states have (on average 1.3835725677830941) internal successors, (1735), 1254 states have internal predecessors, (1735), 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) [2021-12-14 11:43:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1735 transitions. [2021-12-14 11:43:56,236 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1735 transitions. Word has length 230 [2021-12-14 11:43:56,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,236 INFO L470 AbstractCegarLoop]: Abstraction has 1255 states and 1735 transitions. [2021-12-14 11:43:56,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-12-14 11:43:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1735 transitions. [2021-12-14 11:43:56,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-14 11:43:56,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,239 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 12, 12, 12, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:56,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 11:43:56,239 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1837554521, now seen corresponding path program 1 times [2021-12-14 11:43:56,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703393640] [2021-12-14 11:43:56,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 973 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2021-12-14 11:43:56,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703393640] [2021-12-14 11:43:56,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703393640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849558433] [2021-12-14 11:43:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,282 INFO L87 Difference]: Start difference. First operand 1255 states and 1735 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-12-14 11:43:56,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,390 INFO L93 Difference]: Finished difference Result 2627 states and 3657 transitions. [2021-12-14 11:43:56,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 260 [2021-12-14 11:43:56,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,394 INFO L225 Difference]: With dead ends: 2627 [2021-12-14 11:43:56,394 INFO L226 Difference]: Without dead ends: 1393 [2021-12-14 11:43:56,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,396 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 114 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 173 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-12-14 11:43:56,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1360. [2021-12-14 11:43:56,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 1.3914643119941132) internal successors, (1891), 1359 states have internal predecessors, (1891), 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) [2021-12-14 11:43:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1891 transitions. [2021-12-14 11:43:56,426 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1891 transitions. Word has length 260 [2021-12-14 11:43:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,426 INFO L470 AbstractCegarLoop]: Abstraction has 1360 states and 1891 transitions. [2021-12-14 11:43:56,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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) [2021-12-14 11:43:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1891 transitions. [2021-12-14 11:43:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-12-14 11:43:56,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,430 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 13, 13, 13, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:56,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 11:43:56,430 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1040904442, now seen corresponding path program 1 times [2021-12-14 11:43:56,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294613716] [2021-12-14 11:43:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1167 backedges. 627 proven. 0 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-12-14 11:43:56,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294613716] [2021-12-14 11:43:56,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294613716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153492455] [2021-12-14 11:43:56,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,476 INFO L87 Difference]: Start difference. First operand 1360 states and 1891 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-12-14 11:43:56,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,573 INFO L93 Difference]: Finished difference Result 2723 states and 3783 transitions. [2021-12-14 11:43:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 295 [2021-12-14 11:43:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,577 INFO L225 Difference]: With dead ends: 2723 [2021-12-14 11:43:56,578 INFO L226 Difference]: Without dead ends: 1390 [2021-12-14 11:43:56,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,579 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 119 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 166 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-12-14 11:43:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1357. [2021-12-14 11:43:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 1.381268436578171) internal successors, (1873), 1356 states have internal predecessors, (1873), 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) [2021-12-14 11:43:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1873 transitions. [2021-12-14 11:43:56,607 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1873 transitions. Word has length 295 [2021-12-14 11:43:56,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,607 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 1873 transitions. [2021-12-14 11:43:56,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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) [2021-12-14 11:43:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1873 transitions. [2021-12-14 11:43:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-12-14 11:43:56,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,611 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:56,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 11:43:56,611 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1037565840, now seen corresponding path program 1 times [2021-12-14 11:43:56,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179575692] [2021-12-14 11:43:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-12-14 11:43:56,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179575692] [2021-12-14 11:43:56,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179575692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318100062] [2021-12-14 11:43:56,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,668 INFO L87 Difference]: Start difference. First operand 1357 states and 1873 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-12-14 11:43:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,747 INFO L93 Difference]: Finished difference Result 2705 states and 3732 transitions. [2021-12-14 11:43:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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 305 [2021-12-14 11:43:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,751 INFO L225 Difference]: With dead ends: 2705 [2021-12-14 11:43:56,751 INFO L226 Difference]: Without dead ends: 1384 [2021-12-14 11:43:56,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,753 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 245 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-12-14 11:43:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1357. [2021-12-14 11:43:56,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1356 states have (on average 1.3613569321533923) internal successors, (1846), 1356 states have internal predecessors, (1846), 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) [2021-12-14 11:43:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1846 transitions. [2021-12-14 11:43:56,772 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1846 transitions. Word has length 305 [2021-12-14 11:43:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,773 INFO L470 AbstractCegarLoop]: Abstraction has 1357 states and 1846 transitions. [2021-12-14 11:43:56,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 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) [2021-12-14 11:43:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1846 transitions. [2021-12-14 11:43:56,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-12-14 11:43:56,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,777 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:56,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 11:43:56,777 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1729384344, now seen corresponding path program 1 times [2021-12-14 11:43:56,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420691198] [2021-12-14 11:43:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-12-14 11:43:56,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420691198] [2021-12-14 11:43:56,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420691198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172577192] [2021-12-14 11:43:56,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,814 INFO L87 Difference]: Start difference. First operand 1357 states and 1846 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-12-14 11:43:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:56,900 INFO L93 Difference]: Finished difference Result 2828 states and 3822 transitions. [2021-12-14 11:43:56,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:56,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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 332 [2021-12-14 11:43:56,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:56,904 INFO L225 Difference]: With dead ends: 2828 [2021-12-14 11:43:56,904 INFO L226 Difference]: Without dead ends: 1507 [2021-12-14 11:43:56,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,906 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 127 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:56,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 143 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:43:56,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2021-12-14 11:43:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1402. [2021-12-14 11:43:56,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1402 states, 1401 states have (on average 1.3604568165596003) internal successors, (1906), 1401 states have internal predecessors, (1906), 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) [2021-12-14 11:43:56,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1906 transitions. [2021-12-14 11:43:56,926 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1906 transitions. Word has length 332 [2021-12-14 11:43:56,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:56,927 INFO L470 AbstractCegarLoop]: Abstraction has 1402 states and 1906 transitions. [2021-12-14 11:43:56,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 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) [2021-12-14 11:43:56,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1906 transitions. [2021-12-14 11:43:56,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-12-14 11:43:56,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:56,931 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 14, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:56,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 11:43:56,931 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1837144220, now seen corresponding path program 1 times [2021-12-14 11:43:56,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:56,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466203889] [2021-12-14 11:43:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:56,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:56,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 869 proven. 0 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2021-12-14 11:43:56,983 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:56,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466203889] [2021-12-14 11:43:56,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466203889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:43:56,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:43:56,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:43:56,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942029602] [2021-12-14 11:43:56,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:43:56,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:43:56,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:56,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:43:56,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:56,985 INFO L87 Difference]: Start difference. First operand 1402 states and 1906 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-14 11:43:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:57,010 INFO L93 Difference]: Finished difference Result 3939 states and 5384 transitions. [2021-12-14 11:43:57,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:43:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 333 [2021-12-14 11:43:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:57,017 INFO L225 Difference]: With dead ends: 3939 [2021-12-14 11:43:57,018 INFO L226 Difference]: Without dead ends: 2573 [2021-12-14 11:43:57,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:43:57,020 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 82 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:57,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 437 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:43:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2573 states. [2021-12-14 11:43:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2573 to 2571. [2021-12-14 11:43:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2571 states, 2570 states have (on average 1.367704280155642) internal successors, (3515), 2570 states have internal predecessors, (3515), 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) [2021-12-14 11:43:57,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2571 states to 2571 states and 3515 transitions. [2021-12-14 11:43:57,059 INFO L78 Accepts]: Start accepts. Automaton has 2571 states and 3515 transitions. Word has length 333 [2021-12-14 11:43:57,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:57,059 INFO L470 AbstractCegarLoop]: Abstraction has 2571 states and 3515 transitions. [2021-12-14 11:43:57,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-14 11:43:57,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2571 states and 3515 transitions. [2021-12-14 11:43:57,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-12-14 11:43:57,063 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:57,063 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 14, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:57,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 11:43:57,063 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:57,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:57,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1564055932, now seen corresponding path program 1 times [2021-12-14 11:43:57,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:57,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144801542] [2021-12-14 11:43:57,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:57,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 790 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-12-14 11:43:57,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144801542] [2021-12-14 11:43:57,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144801542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:43:57,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515709070] [2021-12-14 11:43:57,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:57,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:43:57,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:43:57,116 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) [2021-12-14 11:43:57,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 11:43:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:57,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 11:43:57,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:43:57,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 790 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-12-14 11:43:57,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:43:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1415 backedges. 790 proven. 12 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-12-14 11:43:58,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515709070] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:43:58,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:43:58,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-14 11:43:58,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7250439] [2021-12-14 11:43:58,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:43:58,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:58,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:58,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:58,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:58,082 INFO L87 Difference]: Start difference. First operand 2571 states and 3515 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2021-12-14 11:43:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:58,413 INFO L93 Difference]: Finished difference Result 5099 states and 6965 transitions. [2021-12-14 11:43:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 11:43:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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 343 [2021-12-14 11:43:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:58,423 INFO L225 Difference]: With dead ends: 5099 [2021-12-14 11:43:58,423 INFO L226 Difference]: Without dead ends: 3862 [2021-12-14 11:43:58,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 686 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:43:58,426 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 355 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:58,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 664 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 11:43:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2021-12-14 11:43:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 2835. [2021-12-14 11:43:58,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2834 states have (on average 1.3514467184191954) internal successors, (3830), 2834 states have internal predecessors, (3830), 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) [2021-12-14 11:43:58,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3830 transitions. [2021-12-14 11:43:58,485 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3830 transitions. Word has length 343 [2021-12-14 11:43:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:58,486 INFO L470 AbstractCegarLoop]: Abstraction has 2835 states and 3830 transitions. [2021-12-14 11:43:58,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 6 states have internal predecessors, (227), 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) [2021-12-14 11:43:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3830 transitions. [2021-12-14 11:43:58,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-12-14 11:43:58,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:58,490 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 15, 15, 15, 15, 15, 13, 13, 11, 11, 9, 9, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:58,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 11:43:58,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-14 11:43:58,708 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:43:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:43:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 61848643, now seen corresponding path program 1 times [2021-12-14 11:43:58,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:43:58,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357345018] [2021-12-14 11:43:58,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:58,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:43:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 953 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-12-14 11:43:58,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:43:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357345018] [2021-12-14 11:43:58,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357345018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:43:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880551407] [2021-12-14 11:43:58,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:43:58,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:43:58,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:43:58,752 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) [2021-12-14 11:43:58,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 11:43:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:43:58,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 11:43:58,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:43:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 953 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-12-14 11:43:59,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:43:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1647 backedges. 953 proven. 5 refuted. 0 times theorem prover too weak. 689 trivial. 0 not checked. [2021-12-14 11:43:59,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880551407] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:43:59,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:43:59,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-14 11:43:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363837091] [2021-12-14 11:43:59,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:43:59,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 11:43:59,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:43:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 11:43:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 11:43:59,681 INFO L87 Difference]: Start difference. First operand 2835 states and 3830 transitions. Second operand has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2021-12-14 11:43:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:43:59,871 INFO L93 Difference]: Finished difference Result 6504 states and 8791 transitions. [2021-12-14 11:43:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:43:59,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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 369 [2021-12-14 11:43:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:43:59,881 INFO L225 Difference]: With dead ends: 6504 [2021-12-14 11:43:59,881 INFO L226 Difference]: Without dead ends: 3698 [2021-12-14 11:43:59,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 11:43:59,885 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 460 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:43:59,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 323 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:43:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2021-12-14 11:43:59,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 2972. [2021-12-14 11:43:59,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2972 states, 2971 states have (on average 1.3382699427802087) internal successors, (3976), 2971 states have internal predecessors, (3976), 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) [2021-12-14 11:43:59,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2972 states to 2972 states and 3976 transitions. [2021-12-14 11:43:59,927 INFO L78 Accepts]: Start accepts. Automaton has 2972 states and 3976 transitions. Word has length 369 [2021-12-14 11:43:59,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:43:59,928 INFO L470 AbstractCegarLoop]: Abstraction has 2972 states and 3976 transitions. [2021-12-14 11:43:59,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.666666666666664) internal successors, (226), 6 states have internal predecessors, (226), 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) [2021-12-14 11:43:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2972 states and 3976 transitions. [2021-12-14 11:43:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2021-12-14 11:43:59,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:43:59,931 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 16, 16, 16, 14, 14, 12, 12, 10, 10, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:43:59,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 11:44:00,143 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,SelfDestructingSolverStorable21 [2021-12-14 11:44:00,143 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:44:00,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:44:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1613450848, now seen corresponding path program 1 times [2021-12-14 11:44:00,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:44:00,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276813147] [2021-12-14 11:44:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:00,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:44:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1968 backedges. 883 proven. 0 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2021-12-14 11:44:00,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:44:00,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276813147] [2021-12-14 11:44:00,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276813147] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:44:00,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 11:44:00,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 11:44:00,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674899853] [2021-12-14 11:44:00,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:44:00,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:44:00,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:44:00,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:44:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:44:00,200 INFO L87 Difference]: Start difference. First operand 2972 states and 3976 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-14 11:44:00,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:44:00,283 INFO L93 Difference]: Finished difference Result 5654 states and 7451 transitions. [2021-12-14 11:44:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:44:00,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 408 [2021-12-14 11:44:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:44:00,291 INFO L225 Difference]: With dead ends: 5654 [2021-12-14 11:44:00,292 INFO L226 Difference]: Without dead ends: 1598 [2021-12-14 11:44:00,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 11:44:00,295 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 39 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:44:00,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 252 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:44:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2021-12-14 11:44:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1532. [2021-12-14 11:44:00,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 1.3383409536250817) internal successors, (2049), 1531 states have internal predecessors, (2049), 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) [2021-12-14 11:44:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 2049 transitions. [2021-12-14 11:44:00,315 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 2049 transitions. Word has length 408 [2021-12-14 11:44:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:44:00,315 INFO L470 AbstractCegarLoop]: Abstraction has 1532 states and 2049 transitions. [2021-12-14 11:44:00,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2021-12-14 11:44:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 2049 transitions. [2021-12-14 11:44:00,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2021-12-14 11:44:00,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:44:00,318 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 18, 17, 17, 15, 15, 13, 13, 11, 11, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:44:00,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 11:44:00,318 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:44:00,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:44:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1952423320, now seen corresponding path program 1 times [2021-12-14 11:44:00,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:44:00,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099019604] [2021-12-14 11:44:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:00,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:44:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 1570 proven. 14 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2021-12-14 11:44:00,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:44:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099019604] [2021-12-14 11:44:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099019604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:44:00,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917587210] [2021-12-14 11:44:00,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:00,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:44:00,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:44:00,367 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) [2021-12-14 11:44:00,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 11:44:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:00,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 11:44:00,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:44:01,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 1017 proven. 0 refuted. 0 times theorem prover too weak. 1692 trivial. 0 not checked. [2021-12-14 11:44:01,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 11:44:01,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917587210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:44:01,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 11:44:01,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-14 11:44:01,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373322425] [2021-12-14 11:44:01,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:44:01,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:44:01,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:44:01,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:44:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:44:01,199 INFO L87 Difference]: Start difference. First operand 1532 states and 2049 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-14 11:44:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:44:01,218 INFO L93 Difference]: Finished difference Result 1557 states and 2079 transitions. [2021-12-14 11:44:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:44:01,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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 492 [2021-12-14 11:44:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:44:01,222 INFO L225 Difference]: With dead ends: 1557 [2021-12-14 11:44:01,222 INFO L226 Difference]: Without dead ends: 1308 [2021-12-14 11:44:01,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:44:01,223 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 60 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 11:44:01,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 251 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 11:44:01,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2021-12-14 11:44:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1285. [2021-12-14 11:44:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.337227414330218) internal successors, (1717), 1284 states have internal predecessors, (1717), 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) [2021-12-14 11:44:01,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1717 transitions. [2021-12-14 11:44:01,240 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1717 transitions. Word has length 492 [2021-12-14 11:44:01,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:44:01,241 INFO L470 AbstractCegarLoop]: Abstraction has 1285 states and 1717 transitions. [2021-12-14 11:44:01,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2021-12-14 11:44:01,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1717 transitions. [2021-12-14 11:44:01,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2021-12-14 11:44:01,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:44:01,244 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 17, 17, 16, 16, 14, 14, 13, 13, 12, 12, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:44:01,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-14 11:44:01,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:44:01,451 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:44:01,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:44:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 68555604, now seen corresponding path program 1 times [2021-12-14 11:44:01,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:44:01,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709449795] [2021-12-14 11:44:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:01,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:44:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2606 backedges. 1545 proven. 14 refuted. 0 times theorem prover too weak. 1047 trivial. 0 not checked. [2021-12-14 11:44:01,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:44:01,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709449795] [2021-12-14 11:44:01,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709449795] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:44:01,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192447963] [2021-12-14 11:44:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:01,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:44:01,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:44:01,501 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) [2021-12-14 11:44:01,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 11:44:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:01,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 11:44:01,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:44:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2606 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 2338 trivial. 0 not checked. [2021-12-14 11:44:02,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 11:44:02,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192447963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 11:44:02,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 11:44:02,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-12-14 11:44:02,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182112442] [2021-12-14 11:44:02,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 11:44:02,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 11:44:02,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:44:02,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 11:44:02,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:44:02,148 INFO L87 Difference]: Start difference. First operand 1285 states and 1717 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-12-14 11:44:02,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:44:02,244 INFO L93 Difference]: Finished difference Result 2642 states and 3546 transitions. [2021-12-14 11:44:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 11:44:02,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 494 [2021-12-14 11:44:02,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:44:02,251 INFO L225 Difference]: With dead ends: 2642 [2021-12-14 11:44:02,252 INFO L226 Difference]: Without dead ends: 1393 [2021-12-14 11:44:02,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 494 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 11:44:02,254 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 49 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 11:44:02,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 200 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 11:44:02,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2021-12-14 11:44:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1390. [2021-12-14 11:44:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1389 states have (on average 1.2966162706983442) internal successors, (1801), 1389 states have internal predecessors, (1801), 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) [2021-12-14 11:44:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 1801 transitions. [2021-12-14 11:44:02,280 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 1801 transitions. Word has length 494 [2021-12-14 11:44:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:44:02,281 INFO L470 AbstractCegarLoop]: Abstraction has 1390 states and 1801 transitions. [2021-12-14 11:44:02,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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) [2021-12-14 11:44:02,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 1801 transitions. [2021-12-14 11:44:02,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-12-14 11:44:02,284 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 11:44:02,286 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 19, 17, 17, 16, 16, 15, 15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 8, 8, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:44:02,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 11:44:02,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:44:02,499 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 11:44:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 11:44:02,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1158579758, now seen corresponding path program 2 times [2021-12-14 11:44:02,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 11:44:02,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528750493] [2021-12-14 11:44:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 11:44:02,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 11:44:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 11:44:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3925 backedges. 2052 proven. 14 refuted. 0 times theorem prover too weak. 1859 trivial. 0 not checked. [2021-12-14 11:44:02,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 11:44:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528750493] [2021-12-14 11:44:02,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528750493] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 11:44:02,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119528144] [2021-12-14 11:44:02,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 11:44:02,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 11:44:02,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 11:44:02,554 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) [2021-12-14 11:44:02,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 11:44:02,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 11:44:02,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 11:44:02,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 11:44:02,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 11:44:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3925 backedges. 2052 proven. 14 refuted. 0 times theorem prover too weak. 1859 trivial. 0 not checked. [2021-12-14 11:44:03,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 11:44:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3925 backedges. 2052 proven. 14 refuted. 0 times theorem prover too weak. 1859 trivial. 0 not checked. [2021-12-14 11:44:03,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119528144] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 11:44:03,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 11:44:03,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-12-14 11:44:03,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880868188] [2021-12-14 11:44:03,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 11:44:03,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 11:44:03,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 11:44:03,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 11:44:03,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-14 11:44:03,914 INFO L87 Difference]: Start difference. First operand 1390 states and 1801 transitions. Second operand has 8 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 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) [2021-12-14 11:44:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 11:44:04,124 INFO L93 Difference]: Finished difference Result 1624 states and 2097 transitions. [2021-12-14 11:44:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 11:44:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 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 604 [2021-12-14 11:44:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 11:44:04,125 INFO L225 Difference]: With dead ends: 1624 [2021-12-14 11:44:04,125 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 11:44:04,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1214 GetRequests, 1206 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-14 11:44:04,126 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 109 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 11:44:04,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 439 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 11:44:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 11:44:04,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 11:44:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 11:44:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 11:44:04,129 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 604 [2021-12-14 11:44:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 11:44:04,129 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 11:44:04,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 40.375) internal successors, (323), 8 states have internal predecessors, (323), 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) [2021-12-14 11:44:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 11:44:04,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 11:44:04,131 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 11:44:04,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 11:44:04,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-14 11:44:04,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 11:44:05,424 INFO L861 garLoopResultBuilder]: At program point L630(lines 622 632) the Hoare annotation is: true [2021-12-14 11:44:05,424 INFO L858 garLoopResultBuilder]: For program point L531(lines 531 535) no Hoare annotation was computed. [2021-12-14 11:44:05,424 INFO L858 garLoopResultBuilder]: For program point L234(lines 234 239) no Hoare annotation was computed. [2021-12-14 11:44:05,424 INFO L858 garLoopResultBuilder]: For program point L499(lines 499 504) no Hoare annotation was computed. [2021-12-14 11:44:05,424 INFO L858 garLoopResultBuilder]: For program point L466(lines 466 477) no Hoare annotation was computed. [2021-12-14 11:44:05,424 INFO L858 garLoopResultBuilder]: For program point L466-1(lines 466 477) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L202(lines 202 545) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L169(lines 169 556) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L136(lines 136 567) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L401(lines 401 405) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L335(lines 335 339) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L858 garLoopResultBuilder]: For program point L335-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,425 INFO L854 garLoopResultBuilder]: At program point L203(lines 202 545) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352)) (.cse0 (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0)) (.cse2 (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) (or (and .cse0 (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1| 4560) .cse1 .cse2 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)) (and (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) .cse1 (not .cse0) .cse2))) [2021-12-14 11:44:05,426 INFO L854 garLoopResultBuilder]: At program point L170(lines 160 559) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4480) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L468(lines 468 474) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L270(lines 270 274) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L270-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L205(lines 205 544) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L172(lines 172 555) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L139(lines 139 566) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 72 620) no Hoare annotation was computed. [2021-12-14 11:44:05,426 INFO L858 garLoopResultBuilder]: For program point L305(lines 305 309) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L305-2(lines 305 309) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L861 garLoopResultBuilder]: At program point L206(lines 205 544) the Hoare annotation is: true [2021-12-14 11:44:05,427 INFO L854 garLoopResultBuilder]: At program point L140(lines 136 567) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0)) (.cse1 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432)) (.cse2 (< 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) (or (and .cse0 .cse1 (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) .cse2) (and .cse0 .cse1 (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1| 4560) .cse2 (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)))) [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L438(lines 438 442) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L438-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L240(lines 240 245) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L373(lines 373 377) no Hoare annotation was computed. [2021-12-14 11:44:05,427 INFO L858 garLoopResultBuilder]: For program point L175(lines 175 554) no Hoare annotation was computed. [2021-12-14 11:44:05,428 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 565) no Hoare annotation was computed. [2021-12-14 11:44:05,428 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 576) no Hoare annotation was computed. [2021-12-14 11:44:05,428 INFO L858 garLoopResultBuilder]: For program point L407(lines 407 412) no Hoare annotation was computed. [2021-12-14 11:44:05,428 INFO L858 garLoopResultBuilder]: For program point L407-2(lines 407 412) no Hoare annotation was computed. [2021-12-14 11:44:05,428 INFO L861 garLoopResultBuilder]: At program point L209(lines 208 543) the Hoare annotation is: true [2021-12-14 11:44:05,428 INFO L854 garLoopResultBuilder]: At program point L176(lines 172 555) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4512)) [2021-12-14 11:44:05,428 INFO L854 garLoopResultBuilder]: At program point L110(lines 109 576) the Hoare annotation is: (and (= 12292 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 0)) [2021-12-14 11:44:05,428 INFO L854 garLoopResultBuilder]: At program point L541(lines 106 607) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0))) (let ((.cse6 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)) (.cse8 (= 3 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (.cse3 (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1| 4560)) (.cse9 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352)) (.cse10 (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (.cse2 (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (.cse11 (= 4400 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (.cse4 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4560)) (.cse12 (not .cse0)) (.cse5 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (.cse7 (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|)) (.cse1 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4528))) (or (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse5 .cse6) (and (= 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 1)) (and .cse0 .cse7 .cse8) (and .cse0 .cse3 .cse9 .cse10 .cse6) (and .cse3 .cse8) (and (= 4368 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 0)) (and .cse0 .cse3 .cse2 .cse11) (and (= 3 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|) .cse7 .cse9 .cse12 .cse10) (and .cse0 (= 4416 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse2) (and .cse0 .cse7 .cse11) (and .cse7 .cse4 .cse12 .cse5) (and .cse7 (<= 4512 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse1)))) [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 553) no Hoare annotation was computed. [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L145(lines 145 564) no Hoare annotation was computed. [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 575) no Hoare annotation was computed. [2021-12-14 11:44:05,429 INFO L861 garLoopResultBuilder]: At program point L608(lines 105 609) the Hoare annotation is: true [2021-12-14 11:44:05,429 INFO L854 garLoopResultBuilder]: At program point L146(lines 142 565) the Hoare annotation is: (and (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4432) (< 4384 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 382) no Hoare annotation was computed. [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L378-2(lines 378 382) no Hoare annotation was computed. [2021-12-14 11:44:05,429 INFO L858 garLoopResultBuilder]: For program point L577(lines 577 605) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L181(lines 181 552) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 563) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L115(lines 115 574) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 602) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L512-1(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L347(lines 347 352) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L314-1(lines 314 328) no Hoare annotation was computed. [2021-12-14 11:44:05,430 INFO L854 garLoopResultBuilder]: At program point L215(lines 112 575) the Hoare annotation is: (and (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4352) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 0)) [2021-12-14 11:44:05,430 INFO L854 garLoopResultBuilder]: At program point L182(lines 178 553) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4512)) [2021-12-14 11:44:05,430 INFO L858 garLoopResultBuilder]: For program point L612(lines 612 616) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L579(lines 579 588) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L612-2(lines 612 616) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L579-2(lines 578 600) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L282(lines 282 286) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 551) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L151(lines 151 562) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L118(lines 118 573) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L581(lines 581 585) no Hoare annotation was computed. [2021-12-14 11:44:05,431 INFO L858 garLoopResultBuilder]: For program point L449(lines 449 454) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L854 garLoopResultBuilder]: At program point L152(lines 148 563) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4448) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L86(lines 86 94) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L483(lines 483 487) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L318(lines 318 322) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L318-2(lines 316 328) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L517-1(lines 517 521) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 422) no Hoare annotation was computed. [2021-12-14 11:44:05,432 INFO L858 garLoopResultBuilder]: For program point L220(lines 220 224) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L187(lines 187 550) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L154(lines 154 561) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L220-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L121(lines 121 572) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L854 garLoopResultBuilder]: At program point L188(lines 184 551) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4528))) (or (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) .cse0 (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (and (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) (<= 4512 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse0))) [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L89(lines 89 93) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L89-2(lines 86 94) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L861 garLoopResultBuilder]: At program point L619(lines 19 621) the Hoare annotation is: true [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 11:44:05,433 INFO L858 garLoopResultBuilder]: For program point L256(lines 256 261) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L190(lines 190 549) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L157(lines 157 560) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 571) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 492) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L488-2(lines 488 492) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L854 garLoopResultBuilder]: At program point L158(lines 154 561) the Hoare annotation is: (and (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0) (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4464) (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L390(lines 390 394) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 361) no Hoare annotation was computed. [2021-12-14 11:44:05,434 INFO L858 garLoopResultBuilder]: For program point L291(lines 291 299) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L854 garLoopResultBuilder]: At program point L358(lines 72 620) the Hoare annotation is: false [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L193(lines 193 548) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L160(lines 160 559) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L127(lines 127 570) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L590(lines 590 596) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L524(lines 524 528) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L858 garLoopResultBuilder]: For program point L524-2(lines 524 528) no Hoare annotation was computed. [2021-12-14 11:44:05,435 INFO L854 garLoopResultBuilder]: At program point L194(lines 190 549) the Hoare annotation is: (let ((.cse0 (<= 4432 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) (.cse1 (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0)) (.cse2 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4560))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1| 4560) .cse2) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 4)) (and (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) (<= 4512 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) .cse2))) [2021-12-14 11:44:05,436 INFO L854 garLoopResultBuilder]: At program point L128(lines 124 571) the Hoare annotation is: (and (< |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4400) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 0)) [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 463) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 298) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L294-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 104) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 547) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L163(lines 163 558) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L130(lines 130 569) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L97(lines 97 101) no Hoare annotation was computed. [2021-12-14 11:44:05,436 INFO L858 garLoopResultBuilder]: For program point L362(lines 362 366) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 618) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L496-1(lines 496 508) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 434) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L199(lines 199 546) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L166(lines 166 557) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L232-2(lines 210 540) no Hoare annotation was computed. [2021-12-14 11:44:05,437 INFO L858 garLoopResultBuilder]: For program point L133(lines 133 568) no Hoare annotation was computed. [2021-12-14 11:44:05,438 INFO L854 garLoopResultBuilder]: At program point L200(lines 196 547) the Hoare annotation is: (let ((.cse1 (<= |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4560)) (.cse0 (= |ULTIMATE.start_ssl3_connect_~s__hit~0#1| 0)) (.cse2 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__state~0#1|))) (or (and .cse0 (<= |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1| 4560) .cse1 .cse2 (<= 4560 |ULTIMATE.start_ssl3_connect_~s__s3__tmp__next_state___0~0#1|)) (and (= 2 |ULTIMATE.start_ssl3_connect_~blastFlag~0#1|) .cse1 (not .cse0) .cse2))) [2021-12-14 11:44:05,438 INFO L854 garLoopResultBuilder]: At program point L134(lines 130 569) the Hoare annotation is: (and (< |ULTIMATE.start_ssl3_connect_~s__state~0#1| 4400) (= |ULTIMATE.start_ssl3_connect_~blastFlag~0#1| 1) (<= 4352 |ULTIMATE.start_ssl3_connect_~s__state~0#1|)) [2021-12-14 11:44:05,440 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 11:44:05,441 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 11:44:05,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 11:44:05 BoogieIcfgContainer [2021-12-14 11:44:05,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 11:44:05,454 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 11:44:05,454 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 11:44:05,455 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 11:44:05,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:43:53" (3/4) ... [2021-12-14 11:44:05,457 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 11:44:05,470 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-14 11:44:05,471 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 11:44:05,472 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 11:44:05,474 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 11:44:05,520 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 11:44:05,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 11:44:05,521 INFO L158 Benchmark]: Toolchain (without parser) took 12380.59ms. Allocated memory was 113.2MB in the beginning and 274.7MB in the end (delta: 161.5MB). Free memory was 78.1MB in the beginning and 215.2MB in the end (delta: -137.2MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,521 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 11:44:05,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.11ms. Allocated memory is still 113.2MB. Free memory was 78.0MB in the beginning and 84.3MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.04ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 81.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,522 INFO L158 Benchmark]: Boogie Preprocessor took 25.70ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 79.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,522 INFO L158 Benchmark]: RCFGBuilder took 413.85ms. Allocated memory is still 113.2MB. Free memory was 79.6MB in the beginning and 52.8MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,522 INFO L158 Benchmark]: TraceAbstraction took 11571.12ms. Allocated memory was 113.2MB in the beginning and 274.7MB in the end (delta: 161.5MB). Free memory was 52.3MB in the beginning and 224.7MB in the end (delta: -172.4MB). Peak memory consumption was 134.6MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,522 INFO L158 Benchmark]: Witness Printer took 66.39ms. Allocated memory is still 274.7MB. Free memory was 224.7MB in the beginning and 215.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 11:44:05,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 75.5MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.11ms. Allocated memory is still 113.2MB. Free memory was 78.0MB in the beginning and 84.3MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.04ms. Allocated memory is still 113.2MB. Free memory was 84.3MB in the beginning and 81.1MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.70ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 79.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 413.85ms. Allocated memory is still 113.2MB. Free memory was 79.6MB in the beginning and 52.8MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 11571.12ms. Allocated memory was 113.2MB in the beginning and 274.7MB in the end (delta: 161.5MB). Free memory was 52.3MB in the beginning and 224.7MB in the end (delta: -172.4MB). Peak memory consumption was 134.6MB. Max. memory is 16.1GB. * Witness Printer took 66.39ms. Allocated memory is still 274.7MB. Free memory was 224.7MB in the beginning and 215.2MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 618]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 124 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 26, TraceHistogramMax: 21, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2451 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2451 mSDsluCounter, 7099 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2679 mSDsCounter, 708 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2874 IncrementalHoareTripleChecker+Invalid, 3582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 708 mSolverCounterUnsat, 4420 mSDtfsCounter, 2874 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3703 GetRequests, 3657 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2972occurred in iteration=22, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 26 MinimizatonAttempts, 2241 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 22 LocationsWithAnnotation, 22 PreInvPairs, 99 NumberOfFragments, 425 HoareAnnotationTreeSize, 22 FomulaSimplifications, 2893 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 22 FomulaSimplificationsInter, 3385 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 8290 NumberOfCodeBlocks, 8290 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 9572 ConstructedInterpolants, 0 QuantifiedInterpolants, 12775 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3863 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 34 InterpolantComputations, 23 PerfectInterpolantSequences, 43484/43605 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 109]: Loop Invariant Derived loop invariant: 12292 == s__state && blastFlag == 0 - InvariantResult [Line: 105]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: (s__state < 4400 && blastFlag == 1) && 4352 <= s__state - InvariantResult [Line: 196]: Loop Invariant Derived loop invariant: ((((s__hit == 0 && s__s3__tmp__next_state___0 <= 4560) && s__state <= 4560) && 4560 <= s__state) && 4560 <= s__s3__tmp__next_state___0) || (((2 == blastFlag && s__state <= 4560) && !(s__hit == 0)) && 4560 <= s__state) - InvariantResult [Line: 142]: Loop Invariant Derived loop invariant: ((s__hit == 0 && s__state <= 4432) && 4384 < s__state) && blastFlag <= 4 - InvariantResult [Line: 124]: Loop Invariant Derived loop invariant: (s__state < 4400 && 4352 <= s__state) && blastFlag == 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: (((s__hit == 0 && s__state <= 4432) && 2 == blastFlag) && 4384 < s__state) || ((((s__hit == 0 && s__state <= 4432) && s__s3__tmp__next_state___0 <= 4560) && 4384 < s__state) && blastFlag <= 4) - InvariantResult [Line: 208]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: ((4432 <= s__state && s__hit == 0) && blastFlag <= 4) && s__state <= 4512 - InvariantResult [Line: 202]: Loop Invariant Derived loop invariant: ((((s__hit == 0 && s__s3__tmp__next_state___0 <= 4560) && s__state <= 4352) && 4352 <= s__state) && 4560 <= s__s3__tmp__next_state___0) || ((((3 == s__s3__tmp__next_state___0 && 2 == blastFlag) && s__state <= 4352) && !(s__hit == 0)) && 4352 <= s__state) - InvariantResult [Line: 190]: Loop Invariant Derived loop invariant: ((((4432 <= s__state && s__hit == 0) && s__s3__tmp__next_state___0 <= 4560) && s__state <= 4560) || (((4432 <= s__state && s__hit == 0) && s__state <= 4560) && blastFlag <= 4)) || ((2 == blastFlag && 4512 <= s__state) && s__state <= 4560) - InvariantResult [Line: 106]: Loop Invariant Derived loop invariant: ((((((((((((((4432 <= s__state && s__hit == 0) && s__state <= 4528) && blastFlag <= 4) || ((((s__hit == 0 && s__s3__tmp__next_state___0 <= 4560) && s__state <= 4560) && 4560 <= s__state) && 4560 <= s__s3__tmp__next_state___0)) || (4384 == s__state && blastFlag == 1)) || ((s__hit == 0 && 2 == blastFlag) && 3 == s__state)) || ((((s__hit == 0 && s__s3__tmp__next_state___0 <= 4560) && s__state <= 4352) && 4352 <= s__state) && 4560 <= s__s3__tmp__next_state___0)) || (s__s3__tmp__next_state___0 <= 4560 && 3 == s__state)) || (4368 == s__state && blastFlag == 0)) || (((s__hit == 0 && s__s3__tmp__next_state___0 <= 4560) && blastFlag <= 4) && 4400 == s__state)) || ((((3 == s__s3__tmp__next_state___0 && 2 == blastFlag) && s__state <= 4352) && !(s__hit == 0)) && 4352 <= s__state)) || ((s__hit == 0 && 4416 == s__state) && blastFlag <= 4)) || ((s__hit == 0 && 2 == blastFlag) && 4400 == s__state)) || (((2 == blastFlag && s__state <= 4560) && !(s__hit == 0)) && 4560 <= s__state)) || ((2 == blastFlag && 4512 <= s__state) && s__state <= 4528) - InvariantResult [Line: 72]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 148]: Loop Invariant Derived loop invariant: ((4432 <= s__state && s__hit == 0) && s__state <= 4448) && blastFlag <= 4 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: s__state <= 4352 && blastFlag == 0 - InvariantResult [Line: 154]: Loop Invariant Derived loop invariant: ((4432 <= s__state && s__hit == 0) && s__state <= 4464) && blastFlag <= 4 - InvariantResult [Line: 184]: Loop Invariant Derived loop invariant: (((4432 <= s__state && s__hit == 0) && s__state <= 4528) && blastFlag <= 4) || ((2 == blastFlag && 4512 <= s__state) && s__state <= 4528) - InvariantResult [Line: 160]: Loop Invariant Derived loop invariant: ((4432 <= s__state && s__hit == 0) && s__state <= 4480) && blastFlag <= 4 - InvariantResult [Line: 178]: Loop Invariant Derived loop invariant: ((4432 <= s__state && s__hit == 0) && blastFlag <= 4) && s__state <= 4512 - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-14 11:44:05,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE