./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem14_label45.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/eca-rers2012/Problem14_label45.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 ab2a29a83013608e39dc6ff6734b72ca7afcd64a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 22:09:43,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 22:09:43,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 22:09:43,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 22:09:43,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 22:09:43,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 22:09:43,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 22:09:43,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 22:09:43,945 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 22:09:43,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 22:09:43,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 22:09:43,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 22:09:43,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 22:09:43,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 22:09:43,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 22:09:43,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 22:09:43,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 22:09:43,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 22:09:43,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 22:09:43,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 22:09:43,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 22:09:43,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 22:09:43,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 22:09:43,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 22:09:43,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 22:09:43,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 22:09:43,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 22:09:44,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 22:09:44,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 22:09:44,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 22:09:44,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 22:09:44,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 22:09:44,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 22:09:44,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 22:09:44,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 22:09:44,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 22:09:44,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 22:09:44,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 22:09:44,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 22:09:44,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 22:09:44,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 22:09:44,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 22:09:44,092 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 22:09:44,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 22:09:44,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 22:09:44,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 22:09:44,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 22:09:44,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 22:09:44,097 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 22:09:44,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 22:09:44,097 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 22:09:44,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 22:09:44,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 22:09:44,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 22:09:44,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 22:09:44,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 22:09:44,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 22:09:44,099 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 22:09:44,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 22:09:44,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 22:09:44,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 22:09:44,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 22:09:44,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 22:09:44,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 22:09:44,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 22:09:44,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 22:09:44,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 22:09:44,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 22:09:44,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 22:09:44,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 22:09:44,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 22:09:44,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 22:09:44,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab2a29a83013608e39dc6ff6734b72ca7afcd64a [2021-08-25 22:09:44,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 22:09:44,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 22:09:44,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 22:09:44,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 22:09:44,501 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 22:09:44,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem14_label45.c [2021-08-25 22:09:44,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c146a22/532366d6fabf4001b7b1d586961f43af/FLAG3fa75e8c4 [2021-08-25 22:09:45,022 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 22:09:45,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem14_label45.c [2021-08-25 22:09:45,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c146a22/532366d6fabf4001b7b1d586961f43af/FLAG3fa75e8c4 [2021-08-25 22:09:45,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5c146a22/532366d6fabf4001b7b1d586961f43af [2021-08-25 22:09:45,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 22:09:45,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 22:09:45,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 22:09:45,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 22:09:45,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 22:09:45,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:45,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6da3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45, skipping insertion in model container [2021-08-25 22:09:45,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:45,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 22:09:45,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 22:09:45,605 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/eca-rers2012/Problem14_label45.c[3828,3841] [2021-08-25 22:09:45,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 22:09:45,830 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 22:09:45,854 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/eca-rers2012/Problem14_label45.c[3828,3841] [2021-08-25 22:09:45,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 22:09:45,936 INFO L208 MainTranslator]: Completed translation [2021-08-25 22:09:45,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45 WrapperNode [2021-08-25 22:09:45,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 22:09:45,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 22:09:45,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 22:09:45,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 22:09:45,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:45,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 22:09:46,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 22:09:46,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 22:09:46,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 22:09:46,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 22:09:46,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 22:09:46,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 22:09:46,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 22:09:46,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (1/1) ... [2021-08-25 22:09:46,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 22:09:46,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:09:46,182 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 22:09:46,200 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 22:09:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 22:09:46,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 22:09:46,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 22:09:46,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 22:09:47,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 22:09:47,420 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-25 22:09:47,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:09:47 BoogieIcfgContainer [2021-08-25 22:09:47,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 22:09:47,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 22:09:47,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 22:09:47,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 22:09:47,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 10:09:45" (1/3) ... [2021-08-25 22:09:47,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5025b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:09:47, skipping insertion in model container [2021-08-25 22:09:47,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 10:09:45" (2/3) ... [2021-08-25 22:09:47,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5025b30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 10:09:47, skipping insertion in model container [2021-08-25 22:09:47,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:09:47" (3/3) ... [2021-08-25 22:09:47,429 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label45.c [2021-08-25 22:09:47,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 22:09:47,434 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 22:09:47,473 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 22:09:47,478 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 22:09:47,478 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 22:09:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 22:09:47,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-08-25 22:09:47,501 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:47,502 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] [2021-08-25 22:09:47,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:47,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:47,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1318097310, now seen corresponding path program 1 times [2021-08-25 22:09:47,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:47,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375367762] [2021-08-25 22:09:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:47,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:47,769 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 22:09:47,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:47,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375367762] [2021-08-25 22:09:47,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375367762] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:47,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:47,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 22:09:47,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367148688] [2021-08-25 22:09:47,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:47,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:47,794 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 0 states have call successors, (0), 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 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:09:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:48,759 INFO L93 Difference]: Finished difference Result 685 states and 1216 transitions. [2021-08-25 22:09:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:48,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-08-25 22:09:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:48,771 INFO L225 Difference]: With dead ends: 685 [2021-08-25 22:09:48,772 INFO L226 Difference]: Without dead ends: 360 [2021-08-25 22:09:48,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-08-25 22:09:48,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-08-25 22:09:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4206128133704736) internal successors, (510), 359 states have internal predecessors, (510), 0 states have call successors, (0), 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 22:09:48,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 510 transitions. [2021-08-25 22:09:48,837 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 510 transitions. Word has length 36 [2021-08-25 22:09:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:48,838 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 510 transitions. [2021-08-25 22:09:48,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:09:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 510 transitions. [2021-08-25 22:09:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-08-25 22:09:48,844 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:48,845 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, 1, 1, 1, 1, 1, 1, 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 22:09:48,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 22:09:48,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:48,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:48,850 INFO L82 PathProgramCache]: Analyzing trace with hash 598559029, now seen corresponding path program 1 times [2021-08-25 22:09:48,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:48,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735762745] [2021-08-25 22:09:48,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:48,851 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:49,074 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 22:09:49,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:49,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735762745] [2021-08-25 22:09:49,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735762745] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:49,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:49,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:49,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761095423] [2021-08-25 22:09:49,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 22:09:49,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:49,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 22:09:49,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:09:49,080 INFO L87 Difference]: Start difference. First operand 360 states and 510 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:09:50,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:50,140 INFO L93 Difference]: Finished difference Result 1074 states and 1446 transitions. [2021-08-25 22:09:50,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 22:09:50,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-08-25 22:09:50,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:50,144 INFO L225 Difference]: With dead ends: 1074 [2021-08-25 22:09:50,144 INFO L226 Difference]: Without dead ends: 716 [2021-08-25 22:09:50,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:09:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-08-25 22:09:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-08-25 22:09:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.2615384615384615) internal successors, (902), 715 states have internal predecessors, (902), 0 states have call successors, (0), 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 22:09:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 902 transitions. [2021-08-25 22:09:50,174 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 902 transitions. Word has length 115 [2021-08-25 22:09:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:50,175 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 902 transitions. [2021-08-25 22:09:50,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:09:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 902 transitions. [2021-08-25 22:09:50,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-08-25 22:09:50,180 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:50,180 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:09:50,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 22:09:50,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:50,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:50,181 INFO L82 PathProgramCache]: Analyzing trace with hash 962256372, now seen corresponding path program 1 times [2021-08-25 22:09:50,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:50,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597653180] [2021-08-25 22:09:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:50,182 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-25 22:09:50,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:50,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597653180] [2021-08-25 22:09:50,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597653180] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:09:50,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134307348] [2021-08-25 22:09:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:50,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:50,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:09:50,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:09:50,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-25 22:09:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:50,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:09:50,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:09:51,114 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-08-25 22:09:51,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134307348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:51,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:09:51,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2021-08-25 22:09:51,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716882861] [2021-08-25 22:09:51,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:51,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:51,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:51,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:09:51,117 INFO L87 Difference]: Start difference. First operand 716 states and 902 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 22:09:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:51,871 INFO L93 Difference]: Finished difference Result 1252 states and 1612 transitions. [2021-08-25 22:09:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:51,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 141 [2021-08-25 22:09:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:51,876 INFO L225 Difference]: With dead ends: 1252 [2021-08-25 22:09:51,877 INFO L226 Difference]: Without dead ends: 1250 [2021-08-25 22:09:51,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:09:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-08-25 22:09:51,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 894. [2021-08-25 22:09:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.3370660694288914) internal successors, (1194), 893 states have internal predecessors, (1194), 0 states have call successors, (0), 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 22:09:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1194 transitions. [2021-08-25 22:09:51,902 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1194 transitions. Word has length 141 [2021-08-25 22:09:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:51,903 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1194 transitions. [2021-08-25 22:09:51,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 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 22:09:51,903 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1194 transitions. [2021-08-25 22:09:51,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-08-25 22:09:51,907 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:51,907 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, 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, 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] [2021-08-25 22:09:51,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-25 22:09:52,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:52,129 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:52,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1175834839, now seen corresponding path program 1 times [2021-08-25 22:09:52,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:52,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717052429] [2021-08-25 22:09:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:52,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-25 22:09:52,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:52,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717052429] [2021-08-25 22:09:52,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717052429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:52,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:52,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:52,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855834066] [2021-08-25 22:09:52,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 22:09:52,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:52,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 22:09:52,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:09:52,240 INFO L87 Difference]: Start difference. First operand 894 states and 1194 transitions. Second operand has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 22:09:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:53,044 INFO L93 Difference]: Finished difference Result 1993 states and 2629 transitions. [2021-08-25 22:09:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 22:09:53,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 195 [2021-08-25 22:09:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:53,049 INFO L225 Difference]: With dead ends: 1993 [2021-08-25 22:09:53,049 INFO L226 Difference]: Without dead ends: 1072 [2021-08-25 22:09:53,051 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:09:53,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-08-25 22:09:53,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2021-08-25 22:09:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 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 22:09:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2021-08-25 22:09:53,072 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 195 [2021-08-25 22:09:53,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:53,073 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2021-08-25 22:09:53,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.75) internal successors, (191), 3 states have internal predecessors, (191), 0 states have call successors, (0), 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 22:09:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2021-08-25 22:09:53,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-08-25 22:09:53,075 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:53,075 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:09:53,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-25 22:09:53,075 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:53,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:53,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1612317507, now seen corresponding path program 1 times [2021-08-25 22:09:53,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:53,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078729126] [2021-08-25 22:09:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:53,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 67 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 22:09:53,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:53,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078729126] [2021-08-25 22:09:53,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078729126] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:09:53,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629085777] [2021-08-25 22:09:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:53,186 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:53,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:09:53,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:09:53,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-25 22:09:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:53,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:09:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:09:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-08-25 22:09:53,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629085777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:53,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:09:53,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-08-25 22:09:53,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302590012] [2021-08-25 22:09:53,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:53,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:09:53,963 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 22:09:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:54,608 INFO L93 Difference]: Finished difference Result 2498 states and 3033 transitions. [2021-08-25 22:09:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 207 [2021-08-25 22:09:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:54,613 INFO L225 Difference]: With dead ends: 2498 [2021-08-25 22:09:54,613 INFO L226 Difference]: Without dead ends: 1428 [2021-08-25 22:09:54,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 19.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:09:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1428 states. [2021-08-25 22:09:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1428 to 1072. [2021-08-25 22:09:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 1071 states have (on average 1.1802054154995332) internal successors, (1264), 1071 states have internal predecessors, (1264), 0 states have call successors, (0), 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 22:09:54,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1264 transitions. [2021-08-25 22:09:54,637 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1264 transitions. Word has length 207 [2021-08-25 22:09:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:54,638 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1264 transitions. [2021-08-25 22:09:54,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 22:09:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1264 transitions. [2021-08-25 22:09:54,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-08-25 22:09:54,640 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:54,640 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:09:54,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-25 22:09:54,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:54,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:54,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1756406788, now seen corresponding path program 1 times [2021-08-25 22:09:54,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:54,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441338225] [2021-08-25 22:09:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:54,863 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 22:09:54,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:54,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441338225] [2021-08-25 22:09:54,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441338225] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:54,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:54,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:54,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826793315] [2021-08-25 22:09:54,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:54,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:54,964 INFO L87 Difference]: Start difference. First operand 1072 states and 1264 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 22:09:55,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:55,538 INFO L93 Difference]: Finished difference Result 2676 states and 3213 transitions. [2021-08-25 22:09:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:55,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 210 [2021-08-25 22:09:55,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:55,544 INFO L225 Difference]: With dead ends: 2676 [2021-08-25 22:09:55,544 INFO L226 Difference]: Without dead ends: 1606 [2021-08-25 22:09:55,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-08-25 22:09:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2021-08-25 22:09:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.1576323987538941) internal successors, (1858), 1605 states have internal predecessors, (1858), 0 states have call successors, (0), 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 22:09:55,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 1858 transitions. [2021-08-25 22:09:55,575 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 1858 transitions. Word has length 210 [2021-08-25 22:09:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:55,576 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 1858 transitions. [2021-08-25 22:09:55,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 22:09:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 1858 transitions. [2021-08-25 22:09:55,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-08-25 22:09:55,580 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:55,580 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2021-08-25 22:09:55,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-25 22:09:55,581 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:55,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:55,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1957778096, now seen corresponding path program 1 times [2021-08-25 22:09:55,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:55,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334736516] [2021-08-25 22:09:55,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:55,582 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:55,725 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 156 proven. 130 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-08-25 22:09:55,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:55,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334736516] [2021-08-25 22:09:55,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334736516] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:09:55,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641928490] [2021-08-25 22:09:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:55,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:09:55,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:09:55,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-25 22:09:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:56,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:09:56,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:09:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-08-25 22:09:57,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641928490] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:57,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:09:57,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-08-25 22:09:57,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508984261] [2021-08-25 22:09:57,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:57,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:09:57,092 INFO L87 Difference]: Start difference. First operand 1606 states and 1858 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 22:09:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:57,715 INFO L93 Difference]: Finished difference Result 3566 states and 4204 transitions. [2021-08-25 22:09:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 329 [2021-08-25 22:09:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:57,723 INFO L225 Difference]: With dead ends: 3566 [2021-08-25 22:09:57,723 INFO L226 Difference]: Without dead ends: 2140 [2021-08-25 22:09:57,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:09:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-08-25 22:09:57,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1962. [2021-08-25 22:09:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.1330953595104538) internal successors, (2222), 1961 states have internal predecessors, (2222), 0 states have call successors, (0), 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 22:09:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2222 transitions. [2021-08-25 22:09:57,761 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2222 transitions. Word has length 329 [2021-08-25 22:09:57,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:57,762 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2222 transitions. [2021-08-25 22:09:57,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 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 22:09:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2222 transitions. [2021-08-25 22:09:57,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-08-25 22:09:57,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:57,768 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:09:57,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-25 22:09:57,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:09:57,981 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:57,981 INFO L82 PathProgramCache]: Analyzing trace with hash 918840898, now seen corresponding path program 1 times [2021-08-25 22:09:57,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:57,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14785277] [2021-08-25 22:09:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:57,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:58,183 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 366 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-08-25 22:09:58,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:58,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14785277] [2021-08-25 22:09:58,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14785277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:58,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:58,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:58,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108592693] [2021-08-25 22:09:58,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 22:09:58,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:58,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 22:09:58,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:09:58,190 INFO L87 Difference]: Start difference. First operand 1962 states and 2222 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 22:09:58,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:58,871 INFO L93 Difference]: Finished difference Result 3951 states and 4494 transitions. [2021-08-25 22:09:58,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 22:09:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 406 [2021-08-25 22:09:58,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:58,878 INFO L225 Difference]: With dead ends: 3951 [2021-08-25 22:09:58,878 INFO L226 Difference]: Without dead ends: 2140 [2021-08-25 22:09:58,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:09:58,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-08-25 22:09:58,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 1962. [2021-08-25 22:09:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1962 states, 1961 states have (on average 1.084140744518103) internal successors, (2126), 1961 states have internal predecessors, (2126), 0 states have call successors, (0), 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 22:09:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2126 transitions. [2021-08-25 22:09:58,918 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2126 transitions. Word has length 406 [2021-08-25 22:09:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:58,919 INFO L470 AbstractCegarLoop]: Abstraction has 1962 states and 2126 transitions. [2021-08-25 22:09:58,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 3 states have internal predecessors, (220), 0 states have call successors, (0), 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 22:09:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2126 transitions. [2021-08-25 22:09:58,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2021-08-25 22:09:58,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:58,927 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:09:58,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-25 22:09:58,929 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:58,929 INFO L82 PathProgramCache]: Analyzing trace with hash 200589399, now seen corresponding path program 1 times [2021-08-25 22:09:58,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:58,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758192908] [2021-08-25 22:09:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:58,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 655 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-08-25 22:09:59,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:59,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758192908] [2021-08-25 22:09:59,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758192908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:59,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:59,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:59,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051630639] [2021-08-25 22:09:59,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:59,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:59,067 INFO L87 Difference]: Start difference. First operand 1962 states and 2126 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 22:09:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:09:59,707 INFO L93 Difference]: Finished difference Result 4456 states and 4894 transitions. [2021-08-25 22:09:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:09:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 429 [2021-08-25 22:09:59,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:09:59,718 INFO L225 Difference]: With dead ends: 4456 [2021-08-25 22:09:59,718 INFO L226 Difference]: Without dead ends: 2674 [2021-08-25 22:09:59,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:59,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2021-08-25 22:09:59,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2021-08-25 22:09:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.08791619902731) internal successors, (2908), 2673 states have internal predecessors, (2908), 0 states have call successors, (0), 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 22:09:59,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2908 transitions. [2021-08-25 22:09:59,773 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2908 transitions. Word has length 429 [2021-08-25 22:09:59,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:09:59,774 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2908 transitions. [2021-08-25 22:09:59,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 22:09:59,774 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2908 transitions. [2021-08-25 22:09:59,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-08-25 22:09:59,781 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:09:59,781 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:09:59,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-25 22:09:59,781 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:09:59,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:09:59,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1994262682, now seen corresponding path program 1 times [2021-08-25 22:09:59,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:09:59,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933811290] [2021-08-25 22:09:59,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:09:59,783 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:09:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:09:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-08-25 22:09:59,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:09:59,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933811290] [2021-08-25 22:09:59,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933811290] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:09:59,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:09:59,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:09:59,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341233824] [2021-08-25 22:09:59,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:09:59,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:09:59,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:09:59,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:09:59,934 INFO L87 Difference]: Start difference. First operand 2674 states and 2908 transitions. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 22:10:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:00,520 INFO L93 Difference]: Finished difference Result 6236 states and 6878 transitions. [2021-08-25 22:10:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 470 [2021-08-25 22:10:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:00,532 INFO L225 Difference]: With dead ends: 6236 [2021-08-25 22:10:00,533 INFO L226 Difference]: Without dead ends: 3742 [2021-08-25 22:10:00,536 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 22:10:00,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-08-25 22:10:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3742. [2021-08-25 22:10:00,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.083400160384924) internal successors, (4053), 3741 states have internal predecessors, (4053), 0 states have call successors, (0), 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 22:10:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 4053 transitions. [2021-08-25 22:10:00,605 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 4053 transitions. Word has length 470 [2021-08-25 22:10:00,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:00,606 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 4053 transitions. [2021-08-25 22:10:00,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 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 22:10:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 4053 transitions. [2021-08-25 22:10:00,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2021-08-25 22:10:00,615 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:00,616 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:10:00,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-25 22:10:00,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:00,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:00,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1478834189, now seen corresponding path program 1 times [2021-08-25 22:10:00,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:00,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510666834] [2021-08-25 22:10:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:00,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 988 backedges. 605 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-08-25 22:10:00,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:00,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510666834] [2021-08-25 22:10:00,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510666834] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:00,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:10:00,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:10:00,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004698251] [2021-08-25 22:10:00,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:00,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:00,758 INFO L87 Difference]: Start difference. First operand 3742 states and 4053 transitions. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 22:10:01,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:01,270 INFO L93 Difference]: Finished difference Result 7304 states and 7925 transitions. [2021-08-25 22:10:01,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:01,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 506 [2021-08-25 22:10:01,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:01,282 INFO L225 Difference]: With dead ends: 7304 [2021-08-25 22:10:01,283 INFO L226 Difference]: Without dead ends: 3742 [2021-08-25 22:10:01,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:01,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3742 states. [2021-08-25 22:10:01,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3742 to 3208. [2021-08-25 22:10:01,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 3207 states have (on average 1.0792017461802308) internal successors, (3461), 3207 states have internal predecessors, (3461), 0 states have call successors, (0), 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 22:10:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 3461 transitions. [2021-08-25 22:10:01,344 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 3461 transitions. Word has length 506 [2021-08-25 22:10:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:01,345 INFO L470 AbstractCegarLoop]: Abstraction has 3208 states and 3461 transitions. [2021-08-25 22:10:01,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 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 22:10:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 3461 transitions. [2021-08-25 22:10:01,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2021-08-25 22:10:01,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:01,350 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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 22:10:01,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-25 22:10:01,351 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:01,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1228194463, now seen corresponding path program 1 times [2021-08-25 22:10:01,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:01,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447261405] [2021-08-25 22:10:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:01,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:01,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 812 proven. 110 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2021-08-25 22:10:01,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:01,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447261405] [2021-08-25 22:10:01,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447261405] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:01,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961252374] [2021-08-25 22:10:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:01,534 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:01,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:01,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:01,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-25 22:10:01,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:01,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:10:02,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1236 backedges. 169 proven. 0 refuted. 0 times theorem prover too weak. 1067 trivial. 0 not checked. [2021-08-25 22:10:03,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961252374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:03,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:03,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-08-25 22:10:03,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123804544] [2021-08-25 22:10:03,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:03,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:03,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:03,573 INFO L87 Difference]: Start difference. First operand 3208 states and 3461 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 22:10:04,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:04,177 INFO L93 Difference]: Finished difference Result 7304 states and 7920 transitions. [2021-08-25 22:10:04,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:04,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 625 [2021-08-25 22:10:04,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:04,191 INFO L225 Difference]: With dead ends: 7304 [2021-08-25 22:10:04,192 INFO L226 Difference]: Without dead ends: 4276 [2021-08-25 22:10:04,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4276 states. [2021-08-25 22:10:04,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4276 to 4098. [2021-08-25 22:10:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.072247986331462) internal successors, (4393), 4097 states have internal predecessors, (4393), 0 states have call successors, (0), 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 22:10:04,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4393 transitions. [2021-08-25 22:10:04,271 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4393 transitions. Word has length 625 [2021-08-25 22:10:04,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:04,272 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4393 transitions. [2021-08-25 22:10:04,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 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 22:10:04,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4393 transitions. [2021-08-25 22:10:04,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2021-08-25 22:10:04,278 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:04,278 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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 22:10:04,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:04,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:04,493 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1503775658, now seen corresponding path program 1 times [2021-08-25 22:10:04,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:04,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324680950] [2021-08-25 22:10:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:04,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:04,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 1206 proven. 110 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-08-25 22:10:04,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:04,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324680950] [2021-08-25 22:10:04,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324680950] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:04,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282215526] [2021-08-25 22:10:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:04,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:04,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:04,705 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:04,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-25 22:10:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:05,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 908 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:10:05,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:07,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2021-08-25 22:10:07,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282215526] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:07,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:07,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-08-25 22:10:07,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164043054] [2021-08-25 22:10:07,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:07,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:07,246 INFO L87 Difference]: Start difference. First operand 4098 states and 4393 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 22:10:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:07,879 INFO L93 Difference]: Finished difference Result 8906 states and 9550 transitions. [2021-08-25 22:10:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 704 [2021-08-25 22:10:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:07,898 INFO L225 Difference]: With dead ends: 8906 [2021-08-25 22:10:07,898 INFO L226 Difference]: Without dead ends: 4098 [2021-08-25 22:10:07,902 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.6ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-08-25 22:10:07,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3564. [2021-08-25 22:10:07,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 3563 states have (on average 1.0637103564412012) internal successors, (3790), 3563 states have internal predecessors, (3790), 0 states have call successors, (0), 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 22:10:07,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 3790 transitions. [2021-08-25 22:10:07,968 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 3790 transitions. Word has length 704 [2021-08-25 22:10:07,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:07,969 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 3790 transitions. [2021-08-25 22:10:07,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 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 22:10:07,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 3790 transitions. [2021-08-25 22:10:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2021-08-25 22:10:07,976 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:07,977 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:10:08,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:08,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-08-25 22:10:08,193 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:08,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash -724163442, now seen corresponding path program 1 times [2021-08-25 22:10:08,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:08,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637518281] [2021-08-25 22:10:08,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:08,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 1224 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-08-25 22:10:08,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:08,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637518281] [2021-08-25 22:10:08,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637518281] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:08,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525439908] [2021-08-25 22:10:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:08,420 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:08,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:08,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:08,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-25 22:10:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:10:09,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 203 proven. 0 refuted. 0 times theorem prover too weak. 1524 trivial. 0 not checked. [2021-08-25 22:10:11,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525439908] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:11,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:11,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-08-25 22:10:11,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322994426] [2021-08-25 22:10:11,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:11,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:11,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:11,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:11,192 INFO L87 Difference]: Start difference. First operand 3564 states and 3790 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:10:11,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:11,673 INFO L93 Difference]: Finished difference Result 7838 states and 8373 transitions. [2021-08-25 22:10:11,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:11,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 772 [2021-08-25 22:10:11,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:11,683 INFO L225 Difference]: With dead ends: 7838 [2021-08-25 22:10:11,684 INFO L226 Difference]: Without dead ends: 4454 [2021-08-25 22:10:11,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2021-08-25 22:10:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 4098. [2021-08-25 22:10:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0573590432023432) internal successors, (4332), 4097 states have internal predecessors, (4332), 0 states have call successors, (0), 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 22:10:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4332 transitions. [2021-08-25 22:10:11,745 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4332 transitions. Word has length 772 [2021-08-25 22:10:11,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:11,746 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4332 transitions. [2021-08-25 22:10:11,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:10:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4332 transitions. [2021-08-25 22:10:11,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2021-08-25 22:10:11,753 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:11,754 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:10:11,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:11,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:11,977 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:11,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1347034201, now seen corresponding path program 1 times [2021-08-25 22:10:11,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:11,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380648658] [2021-08-25 22:10:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:11,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 1319 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-08-25 22:10:12,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:12,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380648658] [2021-08-25 22:10:12,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380648658] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:12,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873507316] [2021-08-25 22:10:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:12,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:12,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:12,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:12,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-25 22:10:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:13,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:10:13,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1822 backedges. 707 proven. 0 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-08-25 22:10:15,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873507316] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:15,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:15,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-08-25 22:10:15,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890846453] [2021-08-25 22:10:15,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:15,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:15,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:15,370 INFO L87 Difference]: Start difference. First operand 4098 states and 4332 transitions. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:10:15,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:15,821 INFO L93 Difference]: Finished difference Result 8550 states and 9079 transitions. [2021-08-25 22:10:15,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:15,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 791 [2021-08-25 22:10:15,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:15,850 INFO L225 Difference]: With dead ends: 8550 [2021-08-25 22:10:15,851 INFO L226 Difference]: Without dead ends: 4810 [2021-08-25 22:10:15,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 794 GetRequests, 791 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.2ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-25 22:10:15,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-08-25 22:10:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4632. [2021-08-25 22:10:15,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0563593176419779) internal successors, (4892), 4631 states have internal predecessors, (4892), 0 states have call successors, (0), 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 22:10:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4892 transitions. [2021-08-25 22:10:15,917 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4892 transitions. Word has length 791 [2021-08-25 22:10:15,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:15,918 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4892 transitions. [2021-08-25 22:10:15,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:10:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4892 transitions. [2021-08-25 22:10:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2021-08-25 22:10:15,926 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:15,928 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-25 22:10:15,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:16,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:16,153 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:16,153 INFO L82 PathProgramCache]: Analyzing trace with hash 380264438, now seen corresponding path program 1 times [2021-08-25 22:10:16,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:16,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686269395] [2021-08-25 22:10:16,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:16,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:16,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 1368 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-08-25 22:10:16,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:16,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686269395] [2021-08-25 22:10:16,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686269395] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:16,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201832091] [2021-08-25 22:10:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:16,429 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:16,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:16,432 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:16,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-25 22:10:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:17,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-25 22:10:17,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:19,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1871 backedges. 1368 proven. 155 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2021-08-25 22:10:19,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201832091] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:19,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 22:10:19,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-08-25 22:10:19,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421934783] [2021-08-25 22:10:19,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 22:10:19,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:19,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 22:10:19,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:10:19,869 INFO L87 Difference]: Start difference. First operand 4632 states and 4892 transitions. Second operand has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 22:10:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:20,601 INFO L93 Difference]: Finished difference Result 9974 states and 10551 transitions. [2021-08-25 22:10:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 22:10:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 805 [2021-08-25 22:10:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:20,611 INFO L225 Difference]: With dead ends: 9974 [2021-08-25 22:10:20,611 INFO L226 Difference]: Without dead ends: 5700 [2021-08-25 22:10:20,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 806 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-25 22:10:20,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2021-08-25 22:10:20,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5344. [2021-08-25 22:10:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0533408197641774) internal successors, (5628), 5343 states have internal predecessors, (5628), 0 states have call successors, (0), 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 22:10:20,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5628 transitions. [2021-08-25 22:10:20,688 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5628 transitions. Word has length 805 [2021-08-25 22:10:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:20,689 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5628 transitions. [2021-08-25 22:10:20,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 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 22:10:20,689 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5628 transitions. [2021-08-25 22:10:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2021-08-25 22:10:20,700 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:20,701 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 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, 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] [2021-08-25 22:10:20,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:20,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-25 22:10:20,925 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:20,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:20,926 INFO L82 PathProgramCache]: Analyzing trace with hash 207381265, now seen corresponding path program 1 times [2021-08-25 22:10:20,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:20,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797675128] [2021-08-25 22:10:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:20,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2491 backedges. 1685 proven. 0 refuted. 0 times theorem prover too weak. 806 trivial. 0 not checked. [2021-08-25 22:10:21,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:21,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797675128] [2021-08-25 22:10:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797675128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:21,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:10:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:10:21,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040153046] [2021-08-25 22:10:21,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:21,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:21,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:21,165 INFO L87 Difference]: Start difference. First operand 5344 states and 5628 transitions. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 22:10:21,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:21,652 INFO L93 Difference]: Finished difference Result 10152 states and 10715 transitions. [2021-08-25 22:10:21,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:21,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 882 [2021-08-25 22:10:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:21,661 INFO L225 Difference]: With dead ends: 10152 [2021-08-25 22:10:21,661 INFO L226 Difference]: Without dead ends: 5166 [2021-08-25 22:10:21,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-08-25 22:10:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4988. [2021-08-25 22:10:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0449167836374573) internal successors, (5211), 4987 states have internal predecessors, (5211), 0 states have call successors, (0), 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 22:10:21,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5211 transitions. [2021-08-25 22:10:21,727 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5211 transitions. Word has length 882 [2021-08-25 22:10:21,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:21,728 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5211 transitions. [2021-08-25 22:10:21,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 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 22:10:21,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5211 transitions. [2021-08-25 22:10:21,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 907 [2021-08-25 22:10:21,737 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:21,738 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:10:21,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-25 22:10:21,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:21,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2060216049, now seen corresponding path program 1 times [2021-08-25 22:10:21,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:21,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068590227] [2021-08-25 22:10:21,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:21,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 1696 proven. 93 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-08-25 22:10:21,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:21,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068590227] [2021-08-25 22:10:21,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068590227] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:21,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083433649] [2021-08-25 22:10:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:21,998 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:21,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:22,005 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:22,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-25 22:10:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:23,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:10:23,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:26,013 INFO L134 CoverageAnalysis]: Checked inductivity of 2527 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 2290 trivial. 0 not checked. [2021-08-25 22:10:26,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083433649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:26,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:26,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-08-25 22:10:26,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634766198] [2021-08-25 22:10:26,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:26,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:26,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:26,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:10:26,016 INFO L87 Difference]: Start difference. First operand 4988 states and 5211 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 22:10:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:26,510 INFO L93 Difference]: Finished difference Result 9796 states and 10244 transitions. [2021-08-25 22:10:26,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:26,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 906 [2021-08-25 22:10:26,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:26,521 INFO L225 Difference]: With dead ends: 9796 [2021-08-25 22:10:26,521 INFO L226 Difference]: Without dead ends: 5166 [2021-08-25 22:10:26,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 909 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:10:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-08-25 22:10:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4810. [2021-08-25 22:10:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0411728009981285) internal successors, (5007), 4809 states have internal predecessors, (5007), 0 states have call successors, (0), 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 22:10:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 5007 transitions. [2021-08-25 22:10:26,590 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 5007 transitions. Word has length 906 [2021-08-25 22:10:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:26,591 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 5007 transitions. [2021-08-25 22:10:26,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 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 22:10:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 5007 transitions. [2021-08-25 22:10:26,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2021-08-25 22:10:26,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:26,602 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-25 22:10:26,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:26,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-08-25 22:10:26,829 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:26,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:26,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1395619067, now seen corresponding path program 1 times [2021-08-25 22:10:26,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:26,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255821097] [2021-08-25 22:10:26,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:26,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1710 proven. 93 refuted. 0 times theorem prover too weak. 747 trivial. 0 not checked. [2021-08-25 22:10:27,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:27,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255821097] [2021-08-25 22:10:27,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255821097] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:27,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076592658] [2021-08-25 22:10:27,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:27,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:27,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:27,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:27,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-25 22:10:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-25 22:10:29,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 1828 proven. 266 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2021-08-25 22:10:38,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076592658] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:38,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 22:10:38,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-08-25 22:10:38,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137902039] [2021-08-25 22:10:38,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-25 22:10:38,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-25 22:10:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-25 22:10:38,189 INFO L87 Difference]: Start difference. First operand 4810 states and 5007 transitions. Second operand has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 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 22:10:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:40,277 INFO L93 Difference]: Finished difference Result 10396 states and 10822 transitions. [2021-08-25 22:10:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-25 22:10:40,278 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 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 914 [2021-08-25 22:10:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:40,286 INFO L225 Difference]: With dead ends: 10396 [2021-08-25 22:10:40,286 INFO L226 Difference]: Without dead ends: 5582 [2021-08-25 22:10:40,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 925 GetRequests, 910 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 172.5ms TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2021-08-25 22:10:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5582 states. [2021-08-25 22:10:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5582 to 4810. [2021-08-25 22:10:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0295279683925973) internal successors, (4951), 4809 states have internal predecessors, (4951), 0 states have call successors, (0), 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 22:10:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4951 transitions. [2021-08-25 22:10:40,357 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4951 transitions. Word has length 914 [2021-08-25 22:10:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4951 transitions. [2021-08-25 22:10:40,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 100.11111111111111) internal successors, (901), 8 states have internal predecessors, (901), 0 states have call successors, (0), 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 22:10:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4951 transitions. [2021-08-25 22:10:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1048 [2021-08-25 22:10:40,368 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:40,369 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-25 22:10:40,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:40,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:40,585 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:40,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:40,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1401544166, now seen corresponding path program 1 times [2021-08-25 22:10:40,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:40,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416751684] [2021-08-25 22:10:40,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:40,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3551 backedges. 1082 proven. 0 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-08-25 22:10:40,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:40,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416751684] [2021-08-25 22:10:40,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416751684] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:40,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:10:40,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:10:40,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343418577] [2021-08-25 22:10:40,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:40,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:40,938 INFO L87 Difference]: Start difference. First operand 4810 states and 4951 transitions. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 22:10:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:41,355 INFO L93 Difference]: Finished difference Result 9440 states and 9726 transitions. [2021-08-25 22:10:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 1047 [2021-08-25 22:10:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:41,363 INFO L225 Difference]: With dead ends: 9440 [2021-08-25 22:10:41,364 INFO L226 Difference]: Without dead ends: 4988 [2021-08-25 22:10:41,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4988 states. [2021-08-25 22:10:41,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4988 to 4988. [2021-08-25 22:10:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.026468818929216) internal successors, (5119), 4987 states have internal predecessors, (5119), 0 states have call successors, (0), 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 22:10:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5119 transitions. [2021-08-25 22:10:41,442 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5119 transitions. Word has length 1047 [2021-08-25 22:10:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:41,443 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5119 transitions. [2021-08-25 22:10:41,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 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 22:10:41,443 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5119 transitions. [2021-08-25 22:10:41,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1096 [2021-08-25 22:10:41,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:41,456 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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] [2021-08-25 22:10:41,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-25 22:10:41,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:41,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:41,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1689291374, now seen corresponding path program 1 times [2021-08-25 22:10:41,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:41,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532437861] [2021-08-25 22:10:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:41,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:41,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2738 proven. 72 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2021-08-25 22:10:41,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:41,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532437861] [2021-08-25 22:10:41,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532437861] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:41,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158667084] [2021-08-25 22:10:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:41,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:41,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:41,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:41,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-25 22:10:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:45,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-25 22:10:45,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3788 backedges. 2451 proven. 0 refuted. 0 times theorem prover too weak. 1337 trivial. 0 not checked. [2021-08-25 22:10:47,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158667084] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:47,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:10:47,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-08-25 22:10:47,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391575052] [2021-08-25 22:10:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-25 22:10:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:47,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-25 22:10:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:10:47,951 INFO L87 Difference]: Start difference. First operand 4988 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 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 22:10:48,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:48,610 INFO L93 Difference]: Finished difference Result 10152 states and 10435 transitions. [2021-08-25 22:10:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-25 22:10:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 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 1095 [2021-08-25 22:10:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:48,619 INFO L225 Difference]: With dead ends: 10152 [2021-08-25 22:10:48,619 INFO L226 Difference]: Without dead ends: 5522 [2021-08-25 22:10:48,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1099 GetRequests, 1094 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 19.2ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:10:48,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2021-08-25 22:10:48,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5344. [2021-08-25 22:10:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.0256410256410255) internal successors, (5480), 5343 states have internal predecessors, (5480), 0 states have call successors, (0), 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 22:10:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5480 transitions. [2021-08-25 22:10:48,687 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5480 transitions. Word has length 1095 [2021-08-25 22:10:48,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:48,688 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5480 transitions. [2021-08-25 22:10:48,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 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 22:10:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5480 transitions. [2021-08-25 22:10:48,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2021-08-25 22:10:48,705 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:48,705 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-08-25 22:10:48,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-25 22:10:48,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-08-25 22:10:48,929 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:48,930 INFO L82 PathProgramCache]: Analyzing trace with hash -808907614, now seen corresponding path program 1 times [2021-08-25 22:10:48,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:48,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406983303] [2021-08-25 22:10:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:48,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5860 backedges. 3029 proven. 0 refuted. 0 times theorem prover too weak. 2831 trivial. 0 not checked. [2021-08-25 22:10:49,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:49,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406983303] [2021-08-25 22:10:49,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406983303] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:10:49,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:10:49,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:10:49,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170760539] [2021-08-25 22:10:49,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:10:49,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:49,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:10:49,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:49,373 INFO L87 Difference]: Start difference. First operand 5344 states and 5480 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 22:10:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:10:49,767 INFO L93 Difference]: Finished difference Result 10330 states and 10600 transitions. [2021-08-25 22:10:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:10:49,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 1335 [2021-08-25 22:10:49,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:10:49,774 INFO L225 Difference]: With dead ends: 10330 [2021-08-25 22:10:49,774 INFO L226 Difference]: Without dead ends: 5344 [2021-08-25 22:10:49,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:10:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-08-25 22:10:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 5166. [2021-08-25 22:10:49,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5166 states, 5165 states have (on average 1.0251694094869312) internal successors, (5295), 5165 states have internal predecessors, (5295), 0 states have call successors, (0), 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 22:10:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 5295 transitions. [2021-08-25 22:10:49,837 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 5295 transitions. Word has length 1335 [2021-08-25 22:10:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:10:49,838 INFO L470 AbstractCegarLoop]: Abstraction has 5166 states and 5295 transitions. [2021-08-25 22:10:49,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 22:10:49,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 5295 transitions. [2021-08-25 22:10:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1633 [2021-08-25 22:10:49,858 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:10:49,859 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:10:49,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-25 22:10:49,859 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:10:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:10:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2046809236, now seen corresponding path program 1 times [2021-08-25 22:10:49,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:10:49,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521785237] [2021-08-25 22:10:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:49,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:10:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8487 backedges. 4284 proven. 588 refuted. 0 times theorem prover too weak. 3615 trivial. 0 not checked. [2021-08-25 22:10:50,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:10:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521785237] [2021-08-25 22:10:50,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521785237] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:50,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205181195] [2021-08-25 22:10:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:10:50,656 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:10:50,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:10:50,661 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:10:50,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-25 22:10:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:10:54,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-25 22:10:54,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:10:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8487 backedges. 3476 proven. 435 refuted. 0 times theorem prover too weak. 4576 trivial. 0 not checked. [2021-08-25 22:10:59,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205181195] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:10:59,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-25 22:10:59,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-08-25 22:10:59,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126164025] [2021-08-25 22:10:59,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-25 22:10:59,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:10:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-25 22:10:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-25 22:10:59,912 INFO L87 Difference]: Start difference. First operand 5166 states and 5295 transitions. Second operand has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 11 states have internal predecessors, (1207), 0 states have call successors, (0), 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 22:11:05,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:05,159 INFO L93 Difference]: Finished difference Result 11949 states and 12255 transitions. [2021-08-25 22:11:05,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-25 22:11:05,160 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 11 states have internal predecessors, (1207), 0 states have call successors, (0), 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 1632 [2021-08-25 22:11:05,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:05,166 INFO L225 Difference]: With dead ends: 11949 [2021-08-25 22:11:05,166 INFO L226 Difference]: Without dead ends: 6946 [2021-08-25 22:11:05,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1655 GetRequests, 1637 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 188.0ms TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-08-25 22:11:05,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6946 states. [2021-08-25 22:11:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6946 to 5878. [2021-08-25 22:11:05,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 1.0245022970903521) internal successors, (6021), 5877 states have internal predecessors, (6021), 0 states have call successors, (0), 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 22:11:05,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 6021 transitions. [2021-08-25 22:11:05,233 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 6021 transitions. Word has length 1632 [2021-08-25 22:11:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:05,234 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 6021 transitions. [2021-08-25 22:11:05,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.72727272727273) internal successors, (1207), 11 states have internal predecessors, (1207), 0 states have call successors, (0), 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 22:11:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 6021 transitions. [2021-08-25 22:11:05,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1806 [2021-08-25 22:11:05,258 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:11:05,259 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 9, 9, 9, 9, 9, 9, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:11:05,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-25 22:11:05,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-08-25 22:11:05,485 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:11:05,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:11:05,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1515396758, now seen corresponding path program 1 times [2021-08-25 22:11:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:11:05,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462737510] [2021-08-25 22:11:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:05,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:11:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:06,330 INFO L134 CoverageAnalysis]: Checked inductivity of 10095 backedges. 3290 proven. 1045 refuted. 0 times theorem prover too weak. 5760 trivial. 0 not checked. [2021-08-25 22:11:06,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:11:06,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462737510] [2021-08-25 22:11:06,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462737510] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:11:06,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693087505] [2021-08-25 22:11:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:06,331 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:11:06,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:11:06,333 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:11:06,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-08-25 22:11:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:10,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:11:10,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:11:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10095 backedges. 4335 proven. 0 refuted. 0 times theorem prover too weak. 5760 trivial. 0 not checked. [2021-08-25 22:11:14,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693087505] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:11:14,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:11:14,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-08-25 22:11:14,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23687592] [2021-08-25 22:11:14,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:11:14,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:11:14,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:11:14,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:11:14,880 INFO L87 Difference]: Start difference. First operand 5878 states and 6021 transitions. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 22:11:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:15,305 INFO L93 Difference]: Finished difference Result 12466 states and 12761 transitions. [2021-08-25 22:11:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:11:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 1805 [2021-08-25 22:11:15,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:15,310 INFO L225 Difference]: With dead ends: 12466 [2021-08-25 22:11:15,310 INFO L226 Difference]: Without dead ends: 4810 [2021-08-25 22:11:15,313 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1808 GetRequests, 1804 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-25 22:11:15,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-08-25 22:11:15,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4276. [2021-08-25 22:11:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4276 states, 4275 states have (on average 1.0198830409356725) internal successors, (4360), 4275 states have internal predecessors, (4360), 0 states have call successors, (0), 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 22:11:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4276 states to 4276 states and 4360 transitions. [2021-08-25 22:11:15,344 INFO L78 Accepts]: Start accepts. Automaton has 4276 states and 4360 transitions. Word has length 1805 [2021-08-25 22:11:15,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:15,345 INFO L470 AbstractCegarLoop]: Abstraction has 4276 states and 4360 transitions. [2021-08-25 22:11:15,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 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 22:11:15,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4276 states and 4360 transitions. [2021-08-25 22:11:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1877 [2021-08-25 22:11:15,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:11:15,366 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-08-25 22:11:15,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-08-25 22:11:15,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-08-25 22:11:15,576 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:11:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:11:15,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1007661945, now seen corresponding path program 1 times [2021-08-25 22:11:15,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:11:15,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088549101] [2021-08-25 22:11:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:15,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:11:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11516 backedges. 4585 proven. 121 refuted. 0 times theorem prover too weak. 6810 trivial. 0 not checked. [2021-08-25 22:11:16,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:11:16,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088549101] [2021-08-25 22:11:16,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088549101] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:11:16,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728551089] [2021-08-25 22:11:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:16,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:11:16,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:11:16,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:11:16,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-08-25 22:11:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:21,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2287 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-25 22:11:21,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:11:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11516 backedges. 6906 proven. 0 refuted. 0 times theorem prover too weak. 4610 trivial. 0 not checked. [2021-08-25 22:11:25,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728551089] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:11:25,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:11:25,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 7 [2021-08-25 22:11:25,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657298549] [2021-08-25 22:11:25,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-25 22:11:25,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:11:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-25 22:11:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:25,569 INFO L87 Difference]: Start difference. First operand 4276 states and 4360 transitions. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 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 22:11:26,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:26,800 INFO L93 Difference]: Finished difference Result 9796 states and 10024 transitions. [2021-08-25 22:11:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-25 22:11:26,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 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 1876 [2021-08-25 22:11:26,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:26,805 INFO L225 Difference]: With dead ends: 9796 [2021-08-25 22:11:26,805 INFO L226 Difference]: Without dead ends: 5166 [2021-08-25 22:11:26,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1874 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5166 states. [2021-08-25 22:11:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5166 to 4632. [2021-08-25 22:11:26,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.014683653638523) internal successors, (4699), 4631 states have internal predecessors, (4699), 0 states have call successors, (0), 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 22:11:26,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4699 transitions. [2021-08-25 22:11:26,863 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4699 transitions. Word has length 1876 [2021-08-25 22:11:26,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:26,864 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4699 transitions. [2021-08-25 22:11:26,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 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 22:11:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4699 transitions. [2021-08-25 22:11:26,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1930 [2021-08-25 22:11:26,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:11:26,885 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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 22:11:26,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-08-25 22:11:27,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:11:27,086 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:11:27,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:11:27,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1011336580, now seen corresponding path program 1 times [2021-08-25 22:11:27,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:11:27,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585527964] [2021-08-25 22:11:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:27,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:11:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:27,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11684 backedges. 6807 proven. 404 refuted. 0 times theorem prover too weak. 4473 trivial. 0 not checked. [2021-08-25 22:11:27,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:11:27,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585527964] [2021-08-25 22:11:27,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585527964] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:11:27,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244114454] [2021-08-25 22:11:27,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:27,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:11:27,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:11:27,789 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:11:27,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-25 22:11:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:33,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-25 22:11:33,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:11:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11684 backedges. 2009 proven. 0 refuted. 0 times theorem prover too weak. 9675 trivial. 0 not checked. [2021-08-25 22:11:38,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244114454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:11:38,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:11:38,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-08-25 22:11:38,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522451509] [2021-08-25 22:11:38,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:11:38,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:11:38,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:11:38,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:38,159 INFO L87 Difference]: Start difference. First operand 4632 states and 4699 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 22:11:38,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:38,519 INFO L93 Difference]: Finished difference Result 8906 states and 9038 transitions. [2021-08-25 22:11:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:11:38,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 1929 [2021-08-25 22:11:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:38,523 INFO L225 Difference]: With dead ends: 8906 [2021-08-25 22:11:38,523 INFO L226 Difference]: Without dead ends: 4632 [2021-08-25 22:11:38,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1933 GetRequests, 1928 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:38,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-08-25 22:11:38,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4454. [2021-08-25 22:11:38,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4454 states, 4453 states have (on average 1.0134740624298226) internal successors, (4513), 4453 states have internal predecessors, (4513), 0 states have call successors, (0), 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 22:11:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4454 states to 4454 states and 4513 transitions. [2021-08-25 22:11:38,566 INFO L78 Accepts]: Start accepts. Automaton has 4454 states and 4513 transitions. Word has length 1929 [2021-08-25 22:11:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:38,568 INFO L470 AbstractCegarLoop]: Abstraction has 4454 states and 4513 transitions. [2021-08-25 22:11:38,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 22:11:38,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4454 states and 4513 transitions. [2021-08-25 22:11:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2127 [2021-08-25 22:11:38,598 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:11:38,599 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 10, 9, 8, 8, 8, 8, 8, 8, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:11:38,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-25 22:11:38,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-08-25 22:11:38,813 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:11:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:11:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1720440161, now seen corresponding path program 1 times [2021-08-25 22:11:38,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:11:38,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450470604] [2021-08-25 22:11:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:38,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:11:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 14616 backedges. 10186 proven. 103 refuted. 0 times theorem prover too weak. 4327 trivial. 0 not checked. [2021-08-25 22:11:39,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:11:39,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450470604] [2021-08-25 22:11:39,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450470604] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-25 22:11:39,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131032742] [2021-08-25 22:11:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:39,628 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-25 22:11:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 22:11:39,629 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-25 22:11:39,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-08-25 22:11:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:46,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2583 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-25 22:11:46,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 22:11:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14616 backedges. 9436 proven. 0 refuted. 0 times theorem prover too weak. 5180 trivial. 0 not checked. [2021-08-25 22:11:51,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131032742] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:11:51,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-25 22:11:51,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-08-25 22:11:51,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298913431] [2021-08-25 22:11:51,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:11:51,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:11:51,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:11:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:51,315 INFO L87 Difference]: Start difference. First operand 4454 states and 4513 transitions. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 22:11:51,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:51,659 INFO L93 Difference]: Finished difference Result 8194 states and 8298 transitions. [2021-08-25 22:11:51,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:11:51,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 2126 [2021-08-25 22:11:51,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:51,663 INFO L225 Difference]: With dead ends: 8194 [2021-08-25 22:11:51,663 INFO L226 Difference]: Without dead ends: 4098 [2021-08-25 22:11:51,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2130 GetRequests, 2125 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.5ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-25 22:11:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-08-25 22:11:51,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3742. [2021-08-25 22:11:51,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.0093557872226677) internal successors, (3776), 3741 states have internal predecessors, (3776), 0 states have call successors, (0), 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 22:11:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 3776 transitions. [2021-08-25 22:11:51,691 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 3776 transitions. Word has length 2126 [2021-08-25 22:11:51,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:51,692 INFO L470 AbstractCegarLoop]: Abstraction has 3742 states and 3776 transitions. [2021-08-25 22:11:51,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 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 22:11:51,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 3776 transitions. [2021-08-25 22:11:51,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2347 [2021-08-25 22:11:51,724 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 22:11:51,724 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 14, 14, 14, 13, 13, 13, 13, 12, 11, 10, 10, 10, 10, 10, 10, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 22:11:51,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-08-25 22:11:51,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-08-25 22:11:51,925 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 22:11:51,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 22:11:51,926 INFO L82 PathProgramCache]: Analyzing trace with hash -974203586, now seen corresponding path program 1 times [2021-08-25 22:11:51,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 22:11:51,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615850045] [2021-08-25 22:11:51,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 22:11:51,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 22:11:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 22:11:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 17373 backedges. 4222 proven. 0 refuted. 0 times theorem prover too weak. 13151 trivial. 0 not checked. [2021-08-25 22:11:52,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 22:11:52,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615850045] [2021-08-25 22:11:52,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615850045] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 22:11:52,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 22:11:52,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-25 22:11:52,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781448448] [2021-08-25 22:11:52,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-25 22:11:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 22:11:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-25 22:11:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-25 22:11:52,835 INFO L87 Difference]: Start difference. First operand 3742 states and 3776 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 22:11:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 22:11:53,209 INFO L93 Difference]: Finished difference Result 4810 states and 4861 transitions. [2021-08-25 22:11:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-25 22:11:53,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 2346 [2021-08-25 22:11:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 22:11:53,211 INFO L225 Difference]: With dead ends: 4810 [2021-08-25 22:11:53,211 INFO L226 Difference]: Without dead ends: 0 [2021-08-25 22:11:53,213 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 22:11:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-25 22:11:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-25 22:11:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 22:11:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-25 22:11:53,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2346 [2021-08-25 22:11:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 22:11:53,215 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-25 22:11:53,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 22:11:53,215 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-25 22:11:53,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-25 22:11:53,217 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 22:11:53,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-25 22:11:53,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-25 22:11:53,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 22:11:53,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 22:11:53,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-08-25 22:11:55,849 INFO L857 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,850 INFO L857 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-08-25 22:11:55,851 INFO L857 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-08-25 22:11:55,852 INFO L857 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-08-25 22:11:55,853 INFO L857 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 122) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-08-25 22:11:55,854 INFO L857 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-08-25 22:11:55,855 INFO L857 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-08-25 22:11:55,856 INFO L857 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,857 INFO L857 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-08-25 22:11:55,858 INFO L857 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-08-25 22:11:55,859 INFO L857 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-08-25 22:11:55,860 INFO L857 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-25 22:11:55,861 INFO L857 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,862 INFO L857 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L853 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43))) (let ((.cse14 (<= ~a15~0 6)) (.cse2 (<= ~a12~0 10)) (.cse16 (<= 82 ~a12~0)) (.cse1 (<= 9 ~a15~0)) (.cse10 (not (= 5 ~a15~0))) (.cse3 (<= 8 ~a21~0)) (.cse4 (<= ~a21~0 8)) (.cse11 (<= ~a12~0 11)) (.cse5 (< 0 .cse15)) (.cse18 (<= 7 ~a21~0)) (.cse19 (<= ~a21~0 7)) (.cse20 (= ~a15~0 8)) (.cse13 (<= 9 ~a21~0)) (.cse8 (<= ~a15~0 8)) (.cse21 (<= ~a12~0 76)) (.cse17 (< 18 ~a12~0)) (.cse12 (<= 10 ~a21~0)) (.cse7 (< 95380 ~a12~0)) (.cse0 (= ~a24~0 1)) (.cse9 (<= ~a21~0 6)) (.cse6 (<= ~a15~0 7)) (.cse22 (<= (+ 49 ~a12~0) 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse1 (<= ~a12~0 95434) .cse7) (and .cse0 .cse1 .cse3 .cse4 (<= (+ ~a12~0 526767) 0)) (and .cse0 .cse8 .cse9 .cse6 .cse5 .cse10) (and .cse11 .cse0 .cse12) (and .cse13 .cse0 .cse6 .cse5) (and .cse0 .cse14) (and (<= .cse15 0) .cse14) (and .cse16 (<= ~a12~0 73282) .cse0 .cse3 .cse4) (and (<= ~a12~0 72) .cse0 .cse3 .cse4 .cse17) (and (exists ((v_~a12~0_443 Int)) (and (<= (+ 546123 ~a12~0) (div (* v_~a12~0_443 9) 10)) (<= v_~a12~0_443 95434) (< 95380 v_~a12~0_443))) .cse0 .cse18 .cse8 .cse19) (and .cse0 .cse19 .cse2 .cse5 .cse20) (and .cse16 .cse0 .cse18 .cse1) (and .cse0 .cse8 .cse9 (<= 286349 ~a12~0) .cse5 .cse10) (and .cse0 .cse21 .cse3 .cse4 .cse17 .cse20) (and .cse11 .cse0 (= ~a21~0 9) (not (= 5 ULTIMATE.start_calculate_output_~input)) .cse5 .cse20) (and .cse0 .cse18 .cse19 .cse22 .cse20) (and .cse13 (<= ~a21~0 9) .cse0 .cse8 .cse21 .cse17) (and .cse0 .cse12 .cse7) (and .cse0 .cse9 .cse6 .cse22)))) [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L860 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-08-25 22:11:55,863 INFO L857 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L853 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse15 (+ ~a12~0 43))) (let ((.cse14 (<= ~a15~0 6)) (.cse2 (<= ~a12~0 10)) (.cse16 (<= 82 ~a12~0)) (.cse1 (<= 9 ~a15~0)) (.cse10 (not (= 5 ~a15~0))) (.cse3 (<= 8 ~a21~0)) (.cse4 (<= ~a21~0 8)) (.cse11 (<= ~a12~0 11)) (.cse5 (< 0 .cse15)) (.cse18 (<= 7 ~a21~0)) (.cse19 (<= ~a21~0 7)) (.cse20 (= ~a15~0 8)) (.cse13 (<= 9 ~a21~0)) (.cse8 (<= ~a15~0 8)) (.cse21 (<= ~a12~0 76)) (.cse17 (< 18 ~a12~0)) (.cse12 (<= 10 ~a21~0)) (.cse7 (< 95380 ~a12~0)) (.cse0 (= ~a24~0 1)) (.cse9 (<= ~a21~0 6)) (.cse6 (<= ~a15~0 7)) (.cse22 (<= (+ 49 ~a12~0) 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse6 .cse3 .cse4) (and .cse0 .cse1 (<= ~a12~0 95434) .cse7) (and .cse0 .cse1 .cse3 .cse4 (<= (+ ~a12~0 526767) 0)) (and .cse0 .cse8 .cse9 .cse6 .cse5 .cse10) (and .cse11 .cse0 .cse12) (and .cse13 .cse0 .cse6 .cse5) (and .cse0 .cse14) (and (<= .cse15 0) .cse14) (and .cse16 (<= ~a12~0 73282) .cse0 .cse3 .cse4) (and (<= ~a12~0 72) .cse0 .cse3 .cse4 .cse17) (and (exists ((v_~a12~0_443 Int)) (and (<= (+ 546123 ~a12~0) (div (* v_~a12~0_443 9) 10)) (<= v_~a12~0_443 95434) (< 95380 v_~a12~0_443))) .cse0 .cse18 .cse8 .cse19) (and .cse0 .cse19 .cse2 .cse5 .cse20) (and .cse16 .cse0 .cse18 .cse1) (and .cse0 .cse8 .cse9 (<= 286349 ~a12~0) .cse5 .cse10) (and .cse0 .cse21 .cse3 .cse4 .cse17 .cse20) (and .cse11 .cse0 (= ~a21~0 9) (not (= 5 ULTIMATE.start_calculate_output_~input)) .cse5 .cse20) (and .cse0 .cse18 .cse19 .cse22 .cse20) (and .cse13 (<= ~a21~0 9) .cse0 .cse8 .cse21 .cse17) (and .cse0 .cse12 .cse7) (and .cse0 .cse9 .cse6 .cse22)))) [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-08-25 22:11:55,864 INFO L857 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-08-25 22:11:55,865 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-08-25 22:11:55,869 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 22:11:55,876 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,877 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,885 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,886 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,886 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,889 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,890 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,890 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,893 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,893 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,893 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:55,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 10:11:55 BoogieIcfgContainer [2021-08-25 22:11:55,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 22:11:55,896 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 22:11:55,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 22:11:55,897 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 22:11:55,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 10:09:47" (3/4) ... [2021-08-25 22:11:55,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-25 22:11:55,920 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-25 22:11:55,921 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-25 22:11:55,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 22:11:55,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-25 22:11:55,942 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((a24 == 1 && 9 <= a15) && a12 <= 10) && 8 <= a21) && a21 <= 8) && 0 < a12 + 43) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && 9 <= a15) && a12 <= 95434) && 95380 < a12)) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 526767 <= 0)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && a15 <= 7) && 0 < a12 + 43) && !(5 == a15))) || ((a12 <= 11 && a24 == 1) && 10 <= a21)) || (((9 <= a21 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || ((((82 <= a12 && a12 <= 73282) && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((((a12 <= 72 && a24 == 1) && 8 <= a21) && a21 <= 8) && 18 < a12)) || (((((\exists v_~a12~0_443 : int :: (546123 + a12 <= v_~a12~0_443 * 9 / 10 && v_~a12~0_443 <= 95434) && 95380 < v_~a12~0_443) && a24 == 1) && 7 <= a21) && a15 <= 8) && a21 <= 7)) || ((((a24 == 1 && a21 <= 7) && a12 <= 10) && 0 < a12 + 43) && a15 == 8)) || (((82 <= a12 && a24 == 1) && 7 <= a21) && 9 <= a15)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && 286349 <= a12) && 0 < a12 + 43) && !(5 == a15))) || (((((a24 == 1 && a12 <= 76) && 8 <= a21) && a21 <= 8) && 18 < a12) && a15 == 8)) || (((((a12 <= 11 && a24 == 1) && a21 == 9) && !(5 == input)) && 0 < a12 + 43) && a15 == 8)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a12 <= 76) && 18 < a12)) || ((a24 == 1 && 10 <= a21) && 95380 < a12)) || (((a24 == 1 && a21 <= 6) && a15 <= 7) && 49 + a12 <= 0) [2021-08-25 22:11:55,945 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((a24 == 1 && 9 <= a15) && a12 <= 10) && 8 <= a21) && a21 <= 8) && 0 < a12 + 43) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && 9 <= a15) && a12 <= 95434) && 95380 < a12)) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 526767 <= 0)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && a15 <= 7) && 0 < a12 + 43) && !(5 == a15))) || ((a12 <= 11 && a24 == 1) && 10 <= a21)) || (((9 <= a21 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || ((((82 <= a12 && a12 <= 73282) && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((((a12 <= 72 && a24 == 1) && 8 <= a21) && a21 <= 8) && 18 < a12)) || (((((\exists v_~a12~0_443 : int :: (546123 + a12 <= v_~a12~0_443 * 9 / 10 && v_~a12~0_443 <= 95434) && 95380 < v_~a12~0_443) && a24 == 1) && 7 <= a21) && a15 <= 8) && a21 <= 7)) || ((((a24 == 1 && a21 <= 7) && a12 <= 10) && 0 < a12 + 43) && a15 == 8)) || (((82 <= a12 && a24 == 1) && 7 <= a21) && 9 <= a15)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && 286349 <= a12) && 0 < a12 + 43) && !(5 == a15))) || (((((a24 == 1 && a12 <= 76) && 8 <= a21) && a21 <= 8) && 18 < a12) && a15 == 8)) || (((((a12 <= 11 && a24 == 1) && a21 == 9) && !(5 == input)) && 0 < a12 + 43) && a15 == 8)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a12 <= 76) && 18 < a12)) || ((a24 == 1 && 10 <= a21) && 95380 < a12)) || (((a24 == 1 && a21 <= 6) && a15 <= 7) && 49 + a12 <= 0) [2021-08-25 22:11:56,022 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 22:11:56,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 22:11:56,024 INFO L168 Benchmark]: Toolchain (without parser) took 130661.73 ms. Allocated memory was 56.6 MB in the beginning and 2.1 GB in the end (delta: 2.1 GB). Free memory was 33.6 MB in the beginning and 707.1 MB in the end (delta: -673.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,024 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 22:11:56,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.89 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 36.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.68 ms. Allocated memory is still 69.2 MB. Free memory was 36.4 MB in the beginning and 43.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,025 INFO L168 Benchmark]: Boogie Preprocessor took 89.44 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 38.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,025 INFO L168 Benchmark]: RCFGBuilder took 1271.27 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 37.7 MB in the beginning and 46.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,026 INFO L168 Benchmark]: TraceAbstraction took 128472.42 ms. Allocated memory was 94.4 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 46.6 MB in the beginning and 725.9 MB in the end (delta: -679.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,026 INFO L168 Benchmark]: Witness Printer took 125.64 ms. Allocated memory is still 2.1 GB. Free memory was 725.9 MB in the beginning and 707.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-25 22:11:56,031 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 38.8 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 572.89 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.4 MB in the beginning and 36.6 MB in the end (delta: -3.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 122.68 ms. Allocated memory is still 69.2 MB. Free memory was 36.4 MB in the beginning and 43.7 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.44 ms. Allocated memory is still 69.2 MB. Free memory was 43.7 MB in the beginning and 38.0 MB in the end (delta: 5.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1271.27 ms. Allocated memory was 69.2 MB in the beginning and 94.4 MB in the end (delta: 25.2 MB). Free memory was 37.7 MB in the beginning and 46.6 MB in the end (delta: -8.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 128472.42 ms. Allocated memory was 94.4 MB in the beginning and 2.1 GB in the end (delta: 2.0 GB). Free memory was 46.6 MB in the beginning and 725.9 MB in the end (delta: -679.4 MB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. * Witness Printer took 125.64 ms. Allocated memory is still 2.1 GB. Free memory was 725.9 MB in the beginning and 707.1 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] * 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 - PositiveResult [Line: 122]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 128397.8ms, OverallIterations: 28, TraceHistogramMax: 19, EmptinessCheckTime: 303.4ms, AutomataDifference: 23651.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2630.2ms, InitialAbstractionConstructionTime: 12.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3757 SDtfs, 4475 SDslu, 331 SDs, 0 SdLazy, 25342 SolverSat, 1370 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16754.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16771 GetRequests, 16669 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 660.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5878occurred in iteration=23, InterpolantAutomatonStates: 115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1349.3ms AutomataMinimizationTime, 28 MinimizatonAttempts, 7536 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 95 NumberOfFragments, 695 HoareAnnotationTreeSize, 3 FomulaSimplifications, 54240 FormulaSimplificationTreeSizeReduction, 300.5ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 6790 FormulaSimplificationTreeSizeReductionInter, 2320.7ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 967.3ms SsaConstructionTime, 4247.2ms SatisfiabilityAnalysisTime, 55639.0ms InterpolantComputationTime, 41291 NumberOfCodeBlocks, 41291 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 41247 ConstructedInterpolants, 34 QuantifiedInterpolants, 109622 SizeOfPredicates, 1 NumberOfNonLiveVariables, 20752 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 44 InterpolantComputations, 25 PerfectInterpolantSequences, 176595/180866 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2021-08-25 22:11:56,041 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,042 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,049 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] Derived loop invariant: ((((((((((((((((((((((((a24 == 1 && 9 <= a15) && a12 <= 10) && 8 <= a21) && a21 <= 8) && 0 < a12 + 43) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && 9 <= a15) && a12 <= 95434) && 95380 < a12)) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 526767 <= 0)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && a15 <= 7) && 0 < a12 + 43) && !(5 == a15))) || ((a12 <= 11 && a24 == 1) && 10 <= a21)) || (((9 <= a21 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || ((((82 <= a12 && a12 <= 73282) && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((((a12 <= 72 && a24 == 1) && 8 <= a21) && a21 <= 8) && 18 < a12)) || (((((\exists v_~a12~0_443 : int :: (546123 + a12 <= v_~a12~0_443 * 9 / 10 && v_~a12~0_443 <= 95434) && 95380 < v_~a12~0_443) && a24 == 1) && 7 <= a21) && a15 <= 8) && a21 <= 7)) || ((((a24 == 1 && a21 <= 7) && a12 <= 10) && 0 < a12 + 43) && a15 == 8)) || (((82 <= a12 && a24 == 1) && 7 <= a21) && 9 <= a15)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && 286349 <= a12) && 0 < a12 + 43) && !(5 == a15))) || (((((a24 == 1 && a12 <= 76) && 8 <= a21) && a21 <= 8) && 18 < a12) && a15 == 8)) || (((((a12 <= 11 && a24 == 1) && a21 == 9) && !(5 == input)) && 0 < a12 + 43) && a15 == 8)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a12 <= 76) && 18 < a12)) || ((a24 == 1 && 10 <= a21) && 95380 < a12)) || (((a24 == 1 && a21 <= 6) && a15 <= 7) && 49 + a12 <= 0) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant [2021-08-25 22:11:56,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,054 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] [2021-08-25 22:11:56,056 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a12~0_443,QUANTIFIED] Derived loop invariant: ((((((((((((((((((((((((a24 == 1 && 9 <= a15) && a12 <= 10) && 8 <= a21) && a21 <= 8) && 0 < a12 + 43) || (((a24 == 1 && a15 <= 7) && 8 <= a21) && a21 <= 8)) || (((a24 == 1 && 9 <= a15) && a12 <= 95434) && 95380 < a12)) || ((((a24 == 1 && 9 <= a15) && 8 <= a21) && a21 <= 8) && a12 + 526767 <= 0)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && a15 <= 7) && 0 < a12 + 43) && !(5 == a15))) || ((a12 <= 11 && a24 == 1) && 10 <= a21)) || (((9 <= a21 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || (a24 == 1 && a15 <= 6)) || (a12 + 43 <= 0 && a15 <= 6)) || ((((82 <= a12 && a12 <= 73282) && a24 == 1) && 8 <= a21) && a21 <= 8)) || ((((a12 <= 72 && a24 == 1) && 8 <= a21) && a21 <= 8) && 18 < a12)) || (((((\exists v_~a12~0_443 : int :: (546123 + a12 <= v_~a12~0_443 * 9 / 10 && v_~a12~0_443 <= 95434) && 95380 < v_~a12~0_443) && a24 == 1) && 7 <= a21) && a15 <= 8) && a21 <= 7)) || ((((a24 == 1 && a21 <= 7) && a12 <= 10) && 0 < a12 + 43) && a15 == 8)) || (((82 <= a12 && a24 == 1) && 7 <= a21) && 9 <= a15)) || (((((a24 == 1 && a15 <= 8) && a21 <= 6) && 286349 <= a12) && 0 < a12 + 43) && !(5 == a15))) || (((((a24 == 1 && a12 <= 76) && 8 <= a21) && a21 <= 8) && 18 < a12) && a15 == 8)) || (((((a12 <= 11 && a24 == 1) && a21 == 9) && !(5 == input)) && 0 < a12 + 43) && a15 == 8)) || ((((a24 == 1 && 7 <= a21) && a21 <= 7) && 49 + a12 <= 0) && a15 == 8)) || (((((9 <= a21 && a21 <= 9) && a24 == 1) && a15 <= 8) && a12 <= 76) && 18 < a12)) || ((a24 == 1 && 10 <= a21) && 95380 < a12)) || (((a24 == 1 && a21 <= 6) && a15 <= 7) && 49 + a12 <= 0) RESULT: Ultimate proved your program to be correct! [2021-08-25 22:11:56,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...