./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_srvr_1.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 a3bbefcee290f98530e25ab3f5cc4cda5aa0150b ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 20:12:45,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 20:12:45,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 20:12:45,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 20:12:45,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 20:12:45,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 20:12:45,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 20:12:45,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 20:12:45,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 20:12:45,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 20:12:45,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 20:12:45,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 20:12:45,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 20:12:45,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 20:12:45,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 20:12:45,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 20:12:45,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 20:12:45,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 20:12:45,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 20:12:45,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 20:12:45,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 20:12:45,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 20:12:45,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 20:12:45,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 20:12:45,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 20:12:45,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 20:12:45,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 20:12:45,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 20:12:45,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 20:12:45,135 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 20:12:45,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 20:12:45,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 20:12:45,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 20:12:45,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 20:12:45,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 20:12:45,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 20:12:45,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 20:12:45,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 20:12:45,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 20:12:45,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 20:12:45,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 20:12:45,147 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 20:12:45,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 20:12:45,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 20:12:45,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 20:12:45,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 20:12:45,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 20:12:45,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 20:12:45,180 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 20:12:45,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 20:12:45,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 20:12:45,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 20:12:45,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 20:12:45,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 20:12:45,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 20:12:45,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 20:12:45,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 20:12:45,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 20:12:45,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 20:12:45,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:12:45,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 20:12:45,184 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 20:12:45,185 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3bbefcee290f98530e25ab3f5cc4cda5aa0150b [2021-08-25 20:12:45,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 20:12:45,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 20:12:45,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 20:12:45,539 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 20:12:45,539 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 20:12:45,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-08-25 20:12:45,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f7221ac/757c35ca24fe400f98bfdab9f5a375e6/FLAGeed1e5f5a [2021-08-25 20:12:46,059 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 20:12:46,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_1.cil-1.c [2021-08-25 20:12:46,068 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f7221ac/757c35ca24fe400f98bfdab9f5a375e6/FLAGeed1e5f5a [2021-08-25 20:12:46,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f7221ac/757c35ca24fe400f98bfdab9f5a375e6 [2021-08-25 20:12:46,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 20:12:46,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 20:12:46,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 20:12:46,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 20:12:46,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 20:12:46,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362f2afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46, skipping insertion in model container [2021-08-25 20:12:46,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 20:12:46,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 20:12:46,723 WARN L228 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_srvr_1.cil-1.c[42831,42844] [2021-08-25 20:12:46,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:12:46,752 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 20:12:46,813 WARN L228 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_srvr_1.cil-1.c[42831,42844] [2021-08-25 20:12:46,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 20:12:46,837 INFO L208 MainTranslator]: Completed translation [2021-08-25 20:12:46,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46 WrapperNode [2021-08-25 20:12:46,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 20:12:46,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 20:12:46,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 20:12:46,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 20:12:46,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 20:12:46,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 20:12:46,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 20:12:46,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 20:12:46,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,944 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 20:12:46,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 20:12:46,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 20:12:46,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 20:12:46,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (1/1) ... [2021-08-25 20:12:46,983 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 20:12:46,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 20:12:47,002 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) [2021-08-25 20:12:47,027 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 [2021-08-25 20:12:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 20:12:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 20:12:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 20:12:47,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 20:12:47,204 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-25 20:12:47,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-08-25 20:12:47,648 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-08-25 20:12:47,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 20:12:47,658 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 20:12:47,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:47 BoogieIcfgContainer [2021-08-25 20:12:47,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 20:12:47,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 20:12:47,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 20:12:47,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 20:12:47,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 08:12:46" (1/3) ... [2021-08-25 20:12:47,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:12:47, skipping insertion in model container [2021-08-25 20:12:47,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 08:12:46" (2/3) ... [2021-08-25 20:12:47,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6aa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 08:12:47, skipping insertion in model container [2021-08-25 20:12:47,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:47" (3/3) ... [2021-08-25 20:12:47,668 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1.cil-1.c [2021-08-25 20:12:47,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 20:12:47,673 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 20:12:47,711 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 20:12:47,716 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-08-25 20:12:47,716 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 20:12:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:47,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-25 20:12:47,741 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:47,742 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:47,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:47,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:47,747 INFO L82 PathProgramCache]: Analyzing trace with hash -947483198, now seen corresponding path program 1 times [2021-08-25 20:12:47,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:47,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485592338] [2021-08-25 20:12:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:47,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:48,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:48,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485592338] [2021-08-25 20:12:48,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485592338] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:48,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:48,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:48,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952542707] [2021-08-25 20:12:48,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:48,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,064 INFO L87 Difference]: Start difference. First operand has 143 states, 141 states have (on average 1.7163120567375887) internal successors, (242), 142 states have internal predecessors, (242), 0 states have call successors, (0), 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 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:48,359 INFO L93 Difference]: Finished difference Result 333 states and 570 transitions. [2021-08-25 20:12:48,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:48,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-08-25 20:12:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:48,374 INFO L225 Difference]: With dead ends: 333 [2021-08-25 20:12:48,374 INFO L226 Difference]: Without dead ends: 178 [2021-08-25 20:12:48,378 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-08-25 20:12:48,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2021-08-25 20:12:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6257309941520468) internal successors, (278), 171 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 278 transitions. [2021-08-25 20:12:48,430 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 278 transitions. Word has length 45 [2021-08-25 20:12:48,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:48,432 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 278 transitions. [2021-08-25 20:12:48,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,432 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 278 transitions. [2021-08-25 20:12:48,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-25 20:12:48,434 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:48,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:48,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 20:12:48,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash 472840096, now seen corresponding path program 1 times [2021-08-25 20:12:48,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:48,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513017127] [2021-08-25 20:12:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:48,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:48,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:48,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513017127] [2021-08-25 20:12:48,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513017127] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:48,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:48,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:48,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178370742] [2021-08-25 20:12:48,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:48,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,498 INFO L87 Difference]: Start difference. First operand 172 states and 278 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:48,687 INFO L93 Difference]: Finished difference Result 385 states and 632 transitions. [2021-08-25 20:12:48,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:48,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-08-25 20:12:48,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:48,692 INFO L225 Difference]: With dead ends: 385 [2021-08-25 20:12:48,692 INFO L226 Difference]: Without dead ends: 219 [2021-08-25 20:12:48,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2021-08-25 20:12:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2021-08-25 20:12:48,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.6745283018867925) internal successors, (355), 212 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 355 transitions. [2021-08-25 20:12:48,720 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 355 transitions. Word has length 46 [2021-08-25 20:12:48,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:48,721 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 355 transitions. [2021-08-25 20:12:48,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:48,721 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 355 transitions. [2021-08-25 20:12:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-08-25 20:12:48,728 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:48,728 INFO L512 BasicCegarLoop]: trace histogram [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] [2021-08-25 20:12:48,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 20:12:48,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:48,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:48,731 INFO L82 PathProgramCache]: Analyzing trace with hash 488183924, now seen corresponding path program 1 times [2021-08-25 20:12:48,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:48,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541003723] [2021-08-25 20:12:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:48,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:48,825 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:48,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:48,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541003723] [2021-08-25 20:12:48,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541003723] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:48,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:48,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:48,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712284837] [2021-08-25 20:12:48,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:48,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:48,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,828 INFO L87 Difference]: Start difference. First operand 213 states and 355 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) [2021-08-25 20:12:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:48,994 INFO L93 Difference]: Finished difference Result 449 states and 756 transitions. [2021-08-25 20:12:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:48,995 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 74 [2021-08-25 20:12:48,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:48,997 INFO L225 Difference]: With dead ends: 449 [2021-08-25 20:12:48,997 INFO L226 Difference]: Without dead ends: 244 [2021-08-25 20:12:48,998 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-08-25 20:12:49,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-08-25 20:12:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.691358024691358) internal successors, (411), 243 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 411 transitions. [2021-08-25 20:12:49,010 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 411 transitions. Word has length 74 [2021-08-25 20:12:49,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:49,010 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 411 transitions. [2021-08-25 20:12:49,011 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) [2021-08-25 20:12:49,011 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 411 transitions. [2021-08-25 20:12:49,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-08-25 20:12:49,012 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:49,012 INFO L512 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:49,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-25 20:12:49,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:49,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:49,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1651483739, now seen corresponding path program 1 times [2021-08-25 20:12:49,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:49,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260217434] [2021-08-25 20:12:49,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:49,014 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:49,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:49,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260217434] [2021-08-25 20:12:49,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260217434] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:49,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:49,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:49,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59046645] [2021-08-25 20:12:49,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:49,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,067 INFO L87 Difference]: Start difference. First operand 244 states and 411 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:49,254 INFO L93 Difference]: Finished difference Result 526 states and 892 transitions. [2021-08-25 20:12:49,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-08-25 20:12:49,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:49,258 INFO L225 Difference]: With dead ends: 526 [2021-08-25 20:12:49,258 INFO L226 Difference]: Without dead ends: 290 [2021-08-25 20:12:49,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-08-25 20:12:49,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 286. [2021-08-25 20:12:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.7052631578947368) internal successors, (486), 285 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 486 transitions. [2021-08-25 20:12:49,278 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 486 transitions. Word has length 85 [2021-08-25 20:12:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:49,279 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 486 transitions. [2021-08-25 20:12:49,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 486 transitions. [2021-08-25 20:12:49,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-25 20:12:49,285 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:49,285 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2021-08-25 20:12:49,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 20:12:49,286 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:49,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1358393014, now seen corresponding path program 1 times [2021-08-25 20:12:49,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:49,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073679464] [2021-08-25 20:12:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:49,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:49,334 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:49,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:49,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073679464] [2021-08-25 20:12:49,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073679464] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:49,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:49,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:49,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451624773] [2021-08-25 20:12:49,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:49,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:49,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:49,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,336 INFO L87 Difference]: Start difference. First operand 286 states and 486 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) [2021-08-25 20:12:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:49,448 INFO L93 Difference]: Finished difference Result 581 states and 988 transitions. [2021-08-25 20:12:49,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:49,448 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 86 [2021-08-25 20:12:49,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:49,450 INFO L225 Difference]: With dead ends: 581 [2021-08-25 20:12:49,450 INFO L226 Difference]: Without dead ends: 303 [2021-08-25 20:12:49,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-08-25 20:12:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 301. [2021-08-25 20:12:49,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.6933333333333334) internal successors, (508), 300 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 508 transitions. [2021-08-25 20:12:49,459 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 508 transitions. Word has length 86 [2021-08-25 20:12:49,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:49,459 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 508 transitions. [2021-08-25 20:12:49,459 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) [2021-08-25 20:12:49,460 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 508 transitions. [2021-08-25 20:12:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-25 20:12:49,460 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:49,461 INFO L512 BasicCegarLoop]: trace histogram [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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:49,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-25 20:12:49,461 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash 709328611, now seen corresponding path program 1 times [2021-08-25 20:12:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:49,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582838004] [2021-08-25 20:12:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:49,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 20:12:49,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:49,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582838004] [2021-08-25 20:12:49,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582838004] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:49,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:49,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:49,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463182330] [2021-08-25 20:12:49,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:49,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:49,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,513 INFO L87 Difference]: Start difference. First operand 301 states and 508 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:49,676 INFO L93 Difference]: Finished difference Result 598 states and 1009 transitions. [2021-08-25 20:12:49,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:49,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-08-25 20:12:49,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:49,678 INFO L225 Difference]: With dead ends: 598 [2021-08-25 20:12:49,678 INFO L226 Difference]: Without dead ends: 303 [2021-08-25 20:12:49,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-08-25 20:12:49,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 299. [2021-08-25 20:12:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.6879194630872483) internal successors, (503), 298 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 503 transitions. [2021-08-25 20:12:49,698 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 503 transitions. Word has length 86 [2021-08-25 20:12:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:49,698 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 503 transitions. [2021-08-25 20:12:49,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 503 transitions. [2021-08-25 20:12:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-08-25 20:12:49,699 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:49,699 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-08-25 20:12:49,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 20:12:49,700 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:49,700 INFO L82 PathProgramCache]: Analyzing trace with hash 564851953, now seen corresponding path program 1 times [2021-08-25 20:12:49,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:49,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585977872] [2021-08-25 20:12:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:49,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:49,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:49,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585977872] [2021-08-25 20:12:49,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585977872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:49,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:49,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:49,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360515644] [2021-08-25 20:12:49,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:49,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:49,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,728 INFO L87 Difference]: Start difference. First operand 299 states and 503 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:49,840 INFO L93 Difference]: Finished difference Result 592 states and 996 transitions. [2021-08-25 20:12:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:49,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 87 [2021-08-25 20:12:49,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:49,842 INFO L225 Difference]: With dead ends: 592 [2021-08-25 20:12:49,842 INFO L226 Difference]: Without dead ends: 301 [2021-08-25 20:12:49,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-08-25 20:12:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2021-08-25 20:12:49,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.674496644295302) internal successors, (499), 298 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 499 transitions. [2021-08-25 20:12:49,851 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 499 transitions. Word has length 87 [2021-08-25 20:12:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:49,851 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 499 transitions. [2021-08-25 20:12:49,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:49,852 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 499 transitions. [2021-08-25 20:12:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-25 20:12:49,853 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:49,853 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2021-08-25 20:12:49,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-25 20:12:49,853 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash 19025617, now seen corresponding path program 1 times [2021-08-25 20:12:49,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:49,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803996351] [2021-08-25 20:12:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:49,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-08-25 20:12:49,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:49,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803996351] [2021-08-25 20:12:49,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803996351] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:49,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:49,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:49,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107501068] [2021-08-25 20:12:49,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:49,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:49,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:49,912 INFO L87 Difference]: Start difference. First operand 299 states and 499 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,024 INFO L93 Difference]: Finished difference Result 599 states and 998 transitions. [2021-08-25 20:12:50,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 100 [2021-08-25 20:12:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,026 INFO L225 Difference]: With dead ends: 599 [2021-08-25 20:12:50,027 INFO L226 Difference]: Without dead ends: 308 [2021-08-25 20:12:50,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-08-25 20:12:50,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-08-25 20:12:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6449511400651466) internal successors, (505), 307 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 505 transitions. [2021-08-25 20:12:50,036 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 505 transitions. Word has length 100 [2021-08-25 20:12:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,036 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 505 transitions. [2021-08-25 20:12:50,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 505 transitions. [2021-08-25 20:12:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-25 20:12:50,038 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,038 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:50,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-25 20:12:50,039 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1778247501, now seen corresponding path program 1 times [2021-08-25 20:12:50,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492432068] [2021-08-25 20:12:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,040 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,065 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:50,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492432068] [2021-08-25 20:12:50,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492432068] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299618568] [2021-08-25 20:12:50,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,068 INFO L87 Difference]: Start difference. First operand 308 states and 505 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,206 INFO L93 Difference]: Finished difference Result 639 states and 1051 transitions. [2021-08-25 20:12:50,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 100 [2021-08-25 20:12:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,209 INFO L225 Difference]: With dead ends: 639 [2021-08-25 20:12:50,209 INFO L226 Difference]: Without dead ends: 339 [2021-08-25 20:12:50,210 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-08-25 20:12:50,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-08-25 20:12:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.6428571428571428) internal successors, (552), 336 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 552 transitions. [2021-08-25 20:12:50,220 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 552 transitions. Word has length 100 [2021-08-25 20:12:50,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,221 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 552 transitions. [2021-08-25 20:12:50,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,221 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 552 transitions. [2021-08-25 20:12:50,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-25 20:12:50,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,222 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:50,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 20:12:50,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1388103916, now seen corresponding path program 1 times [2021-08-25 20:12:50,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478187739] [2021-08-25 20:12:50,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:50,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478187739] [2021-08-25 20:12:50,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478187739] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479947339] [2021-08-25 20:12:50,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,252 INFO L87 Difference]: Start difference. First operand 337 states and 552 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,393 INFO L93 Difference]: Finished difference Result 668 states and 1094 transitions. [2021-08-25 20:12:50,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 101 [2021-08-25 20:12:50,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,396 INFO L225 Difference]: With dead ends: 668 [2021-08-25 20:12:50,396 INFO L226 Difference]: Without dead ends: 339 [2021-08-25 20:12:50,397 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-08-25 20:12:50,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2021-08-25 20:12:50,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.630952380952381) internal successors, (548), 336 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 548 transitions. [2021-08-25 20:12:50,409 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 548 transitions. Word has length 101 [2021-08-25 20:12:50,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,409 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 548 transitions. [2021-08-25 20:12:50,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,410 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 548 transitions. [2021-08-25 20:12:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-25 20:12:50,411 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,411 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:50,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-25 20:12:50,412 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,412 INFO L82 PathProgramCache]: Analyzing trace with hash -916073731, now seen corresponding path program 1 times [2021-08-25 20:12:50,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111095738] [2021-08-25 20:12:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,413 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:50,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111095738] [2021-08-25 20:12:50,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111095738] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653226311] [2021-08-25 20:12:50,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,445 INFO L87 Difference]: Start difference. First operand 337 states and 548 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,582 INFO L93 Difference]: Finished difference Result 701 states and 1144 transitions. [2021-08-25 20:12:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 102 [2021-08-25 20:12:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,584 INFO L225 Difference]: With dead ends: 701 [2021-08-25 20:12:50,584 INFO L226 Difference]: Without dead ends: 372 [2021-08-25 20:12:50,585 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-08-25 20:12:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 364. [2021-08-25 20:12:50,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6253443526170799) internal successors, (590), 363 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 590 transitions. [2021-08-25 20:12:50,596 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 590 transitions. Word has length 102 [2021-08-25 20:12:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,596 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 590 transitions. [2021-08-25 20:12:50,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,597 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 590 transitions. [2021-08-25 20:12:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-25 20:12:50,598 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,598 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 20:12:50,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-25 20:12:50,598 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,599 INFO L82 PathProgramCache]: Analyzing trace with hash 62624868, now seen corresponding path program 1 times [2021-08-25 20:12:50,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990905928] [2021-08-25 20:12:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,600 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-08-25 20:12:50,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990905928] [2021-08-25 20:12:50,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990905928] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778309466] [2021-08-25 20:12:50,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,630 INFO L87 Difference]: Start difference. First operand 364 states and 590 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,773 INFO L93 Difference]: Finished difference Result 728 states and 1181 transitions. [2021-08-25 20:12:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-08-25 20:12:50,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,776 INFO L225 Difference]: With dead ends: 728 [2021-08-25 20:12:50,776 INFO L226 Difference]: Without dead ends: 372 [2021-08-25 20:12:50,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-08-25 20:12:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 364. [2021-08-25 20:12:50,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.6115702479338843) internal successors, (585), 363 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 585 transitions. [2021-08-25 20:12:50,787 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 585 transitions. Word has length 103 [2021-08-25 20:12:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,788 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 585 transitions. [2021-08-25 20:12:50,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 585 transitions. [2021-08-25 20:12:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-25 20:12:50,789 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,789 INFO L512 BasicCegarLoop]: trace histogram [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, 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] [2021-08-25 20:12:50,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-25 20:12:50,790 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1773852357, now seen corresponding path program 1 times [2021-08-25 20:12:50,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705871131] [2021-08-25 20:12:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,815 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-25 20:12:50,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705871131] [2021-08-25 20:12:50,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705871131] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735856704] [2021-08-25 20:12:50,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,818 INFO L87 Difference]: Start difference. First operand 364 states and 585 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:50,936 INFO L93 Difference]: Finished difference Result 745 states and 1199 transitions. [2021-08-25 20:12:50,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-08-25 20:12:50,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:50,938 INFO L225 Difference]: With dead ends: 745 [2021-08-25 20:12:50,938 INFO L226 Difference]: Without dead ends: 389 [2021-08-25 20:12:50,939 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-08-25 20:12:50,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2021-08-25 20:12:50,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5989583333333333) internal successors, (614), 384 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 614 transitions. [2021-08-25 20:12:50,963 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 614 transitions. Word has length 106 [2021-08-25 20:12:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:50,963 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 614 transitions. [2021-08-25 20:12:50,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 614 transitions. [2021-08-25 20:12:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-08-25 20:12:50,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:50,965 INFO L512 BasicCegarLoop]: trace histogram [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, 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] [2021-08-25 20:12:50,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-25 20:12:50,965 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1450939714, now seen corresponding path program 1 times [2021-08-25 20:12:50,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:50,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721972346] [2021-08-25 20:12:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:50,966 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:50,989 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-08-25 20:12:50,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:50,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721972346] [2021-08-25 20:12:50,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721972346] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:50,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:50,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:50,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073234771] [2021-08-25 20:12:50,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:50,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:50,992 INFO L87 Difference]: Start difference. First operand 385 states and 614 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:51,114 INFO L93 Difference]: Finished difference Result 766 states and 1222 transitions. [2021-08-25 20:12:51,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:51,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-08-25 20:12:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:51,116 INFO L225 Difference]: With dead ends: 766 [2021-08-25 20:12:51,116 INFO L226 Difference]: Without dead ends: 389 [2021-08-25 20:12:51,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-08-25 20:12:51,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 385. [2021-08-25 20:12:51,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 1.5833333333333333) internal successors, (608), 384 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 608 transitions. [2021-08-25 20:12:51,129 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 608 transitions. Word has length 107 [2021-08-25 20:12:51,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:51,129 INFO L470 AbstractCegarLoop]: Abstraction has 385 states and 608 transitions. [2021-08-25 20:12:51,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,130 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 608 transitions. [2021-08-25 20:12:51,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-25 20:12:51,131 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:51,131 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-08-25 20:12:51,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-25 20:12:51,131 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1044207465, now seen corresponding path program 1 times [2021-08-25 20:12:51,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:51,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160126092] [2021-08-25 20:12:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:51,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 20:12:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-25 20:12:51,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 20:12:51,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160126092] [2021-08-25 20:12:51,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160126092] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 20:12:51,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 20:12:51,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 20:12:51,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616388323] [2021-08-25 20:12:51,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 20:12:51,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 20:12:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 20:12:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:51,165 INFO L87 Difference]: Start difference. First operand 385 states and 608 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 20:12:51,207 INFO L93 Difference]: Finished difference Result 1093 states and 1730 transitions. [2021-08-25 20:12:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 20:12:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 122 [2021-08-25 20:12:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 20:12:51,211 INFO L225 Difference]: With dead ends: 1093 [2021-08-25 20:12:51,211 INFO L226 Difference]: Without dead ends: 716 [2021-08-25 20:12:51,212 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 20:12:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-08-25 20:12:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-08-25 20:12:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.5776223776223777) internal successors, (1128), 715 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1128 transitions. [2021-08-25 20:12:51,243 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1128 transitions. Word has length 122 [2021-08-25 20:12:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 20:12:51,243 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 1128 transitions. [2021-08-25 20:12:51,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 20:12:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1128 transitions. [2021-08-25 20:12:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-08-25 20:12:51,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 20:12:51,246 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-08-25 20:12:51,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-25 20:12:51,246 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 20:12:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 20:12:51,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1005180377, now seen corresponding path program 1 times [2021-08-25 20:12:51,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 20:12:51,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964490635] [2021-08-25 20:12:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 20:12:51,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 20:12:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:12:51,267 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 20:12:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 20:12:51,325 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 20:12:51,325 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 20:12:51,326 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 20:12:51,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-25 20:12:51,332 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 20:12:51,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 08:12:51 BoogieIcfgContainer [2021-08-25 20:12:51,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 20:12:51,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 20:12:51,404 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 20:12:51,404 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 20:12:51,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 08:12:47" (3/4) ... [2021-08-25 20:12:51,406 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 20:12:51,474 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 20:12:51,474 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 20:12:51,476 INFO L168 Benchmark]: Toolchain (without parser) took 5029.42 ms. Allocated memory was 56.6 MB in the beginning and 125.8 MB in the end (delta: 69.2 MB). Free memory was 35.3 MB in the beginning and 55.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,476 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 20:12:51,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.64 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 37.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,476 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 33.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,477 INFO L168 Benchmark]: Boogie Preprocessor took 59.16 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 32.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,477 INFO L168 Benchmark]: RCFGBuilder took 688.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.9 MB in the beginning and 42.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,477 INFO L168 Benchmark]: TraceAbstraction took 3740.66 ms. Allocated memory was 69.2 MB in the beginning and 125.8 MB in the end (delta: 56.6 MB). Free memory was 41.9 MB in the beginning and 70.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,477 INFO L168 Benchmark]: Witness Printer took 70.29 ms. Allocated memory is still 125.8 MB. Free memory was 70.0 MB in the beginning and 55.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-25 20:12:51,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.64 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 37.0 MB in the end (delta: -1.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.13 ms. Allocated memory is still 56.6 MB. Free memory was 36.8 MB in the beginning and 33.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.16 ms. Allocated memory is still 56.6 MB. Free memory was 33.9 MB in the beginning and 32.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 688.75 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 31.9 MB in the beginning and 42.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 17.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3740.66 ms. Allocated memory was 69.2 MB in the beginning and 125.8 MB in the end (delta: 56.6 MB). Free memory was 41.9 MB in the beginning and 70.0 MB in the end (delta: -28.1 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 70.29 ms. Allocated memory is still 125.8 MB. Free memory was 70.0 MB in the beginning and 55.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L618] int s ; [L619] int tmp ; [L623] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int() ; [L42] int s__session__cipher ; [L43] int buf = __VERIFIER_nondet_int() ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp = __VERIFIER_nondet_long() ; [L47] int cb ; [L48] long num1 ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 ; [L57] int tmp___4 ; [L58] int tmp___5 ; [L59] int tmp___6 ; [L60] int tmp___7 ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 ; [L63] int tmp___10 ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L270] s__shutdown = 0 [L271] ret = __VERIFIER_nondet_int() [L272] COND TRUE blastFlag == 0 [L273] blastFlag = 1 [L275] COND FALSE !(ret <= 0) [L278] got_new_session = 1 [L279] s__state = 8496 [L280] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 1 [L286] blastFlag = 2 [L288] COND FALSE !(ret <= 0) [L291] COND TRUE \read(s__hit) [L292] s__state = 8656 [L296] s__init_num = 0 [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND TRUE s__state == 8656 [L490] s__session__cipher = s__s3__tmp__new_cipher [L491] tmp___9 = __VERIFIER_nondet_int() [L492] COND FALSE !(! tmp___9) [L496] ret = __VERIFIER_nondet_int() [L497] COND TRUE blastFlag == 2 [L498] blastFlag = 3 [L500] COND FALSE !(ret <= 0) [L503] s__state = 8672 [L504] s__init_num = 0 [L505] tmp___10 = __VERIFIER_nondet_int() [L506] COND FALSE !(! tmp___10) [L585] COND FALSE !(! s__s3__tmp__reuse_message) [L602] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND FALSE !(s__state == 8528) [L150] COND FALSE !(s__state == 8529) [L153] COND FALSE !(s__state == 8544) [L156] COND FALSE !(s__state == 8545) [L159] COND FALSE !(s__state == 8560) [L162] COND FALSE !(s__state == 8561) [L165] COND FALSE !(s__state == 8448) [L168] COND FALSE !(s__state == 8576) [L171] COND FALSE !(s__state == 8577) [L174] COND FALSE !(s__state == 8592) [L177] COND FALSE !(s__state == 8593) [L180] COND FALSE !(s__state == 8608) [L183] COND FALSE !(s__state == 8609) [L186] COND FALSE !(s__state == 8640) [L189] COND FALSE !(s__state == 8641) [L192] COND FALSE !(s__state == 8656) [L195] COND FALSE !(s__state == 8657) [L198] COND TRUE s__state == 8672 [L513] ret = __VERIFIER_nondet_int() [L514] COND FALSE !(blastFlag == 4) [L517] COND TRUE blastFlag == 3 [L613] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 143 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3621.8ms, OverallIterations: 16, TraceHistogramMax: 4, EmptinessCheckTime: 40.3ms, AutomataDifference: 2283.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2225 SDtfs, 2216 SDslu, 435 SDs, 0 SdLazy, 1340 SolverSat, 604 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1352.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=716occurred in iteration=15, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 247.0ms AutomataMinimizationTime, 15 MinimizatonAttempts, 52 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 54.0ms SsaConstructionTime, 196.6ms SatisfiabilityAnalysisTime, 507.0ms InterpolantComputationTime, 1472 NumberOfCodeBlocks, 1472 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1335 ConstructedInterpolants, 0 QuantifiedInterpolants, 2476 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 736/736 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-25 20:12:51,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...