./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.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/product-lines/minepump_spec4_product35.cil.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 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 08:44:47,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 08:44:47,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 08:44:47,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 08:44:47,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 08:44:47,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 08:44:47,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 08:44:47,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 08:44:47,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 08:44:47,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 08:44:47,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 08:44:47,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 08:44:47,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 08:44:47,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 08:44:47,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 08:44:47,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 08:44:47,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 08:44:47,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 08:44:47,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 08:44:47,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 08:44:47,057 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 08:44:47,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 08:44:47,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 08:44:47,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 08:44:47,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 08:44:47,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 08:44:47,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 08:44:47,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 08:44:47,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 08:44:47,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 08:44:47,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 08:44:47,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 08:44:47,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 08:44:47,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 08:44:47,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 08:44:47,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 08:44:47,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 08:44:47,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 08:44:47,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 08:44:47,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 08:44:47,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 08:44:47,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 08:44:47,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 08:44:47,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 08:44:47,084 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 08:44:47,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 08:44:47,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 08:44:47,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 08:44:47,085 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 08:44:47,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 08:44:47,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 08:44:47,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 08:44:47,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 08:44:47,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:44:47,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 08:44:47,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 08:44:47,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 08:44:47,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 08:44:47,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 08:44:47,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 08:44:47,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 08:44:47,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed98ebb1999cc1f1ce8b0aa16a3cd7cdfeeb781 [2021-08-26 08:44:47,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 08:44:47,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 08:44:47,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 08:44:47,362 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 08:44:47,362 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 08:44:47,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-08-26 08:44:47,405 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f56f1/c2b23d35d2bc474596eac68542b0549e/FLAGc78a5f527 [2021-08-26 08:44:47,843 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 08:44:47,843 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2021-08-26 08:44:47,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f56f1/c2b23d35d2bc474596eac68542b0549e/FLAGc78a5f527 [2021-08-26 08:44:47,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3e5f56f1/c2b23d35d2bc474596eac68542b0549e [2021-08-26 08:44:47,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 08:44:47,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 08:44:47,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 08:44:47,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 08:44:47,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 08:44:47,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:44:47" (1/1) ... [2021-08-26 08:44:47,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@264407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:47, skipping insertion in model container [2021-08-26 08:44:47,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 08:44:47" (1/1) ... [2021-08-26 08:44:47,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 08:44:47,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 08:44:48,046 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/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-08-26 08:44:48,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:44:48,091 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 08:44:48,155 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/product-lines/minepump_spec4_product35.cil.c[15762,15775] [2021-08-26 08:44:48,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 08:44:48,188 INFO L208 MainTranslator]: Completed translation [2021-08-26 08:44:48,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48 WrapperNode [2021-08-26 08:44:48,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 08:44:48,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 08:44:48,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 08:44:48,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 08:44:48,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 08:44:48,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 08:44:48,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 08:44:48,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 08:44:48,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 08:44:48,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 08:44:48,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 08:44:48,301 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 08:44:48,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (1/1) ... [2021-08-26 08:44:48,310 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 08:44:48,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:44:48,324 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) [2021-08-26 08:44:48,326 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 [2021-08-26 08:44:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 08:44:48,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 08:44:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 08:44:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 08:44:48,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 08:44:48,887 INFO L299 CfgBuilder]: Removed 100 assume(true) statements. [2021-08-26 08:44:48,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:48 BoogieIcfgContainer [2021-08-26 08:44:48,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 08:44:48,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 08:44:48,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 08:44:48,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 08:44:48,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 08:44:47" (1/3) ... [2021-08-26 08:44:48,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506fd2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:44:48, skipping insertion in model container [2021-08-26 08:44:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 08:44:48" (2/3) ... [2021-08-26 08:44:48,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@506fd2de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 08:44:48, skipping insertion in model container [2021-08-26 08:44:48,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:48" (3/3) ... [2021-08-26 08:44:48,896 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2021-08-26 08:44:48,906 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 08:44:48,906 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-08-26 08:44:48,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 08:44:48,948 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 [2021-08-26 08:44:48,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-26 08:44:48,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:48,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 08:44:48,964 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:48,965 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:48,966 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:48,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1355288485, now seen corresponding path program 1 times [2021-08-26 08:44:48,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:48,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177670905] [2021-08-26 08:44:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:48,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177670905] [2021-08-26 08:44:49,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177670905] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:44:49,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262648682] [2021-08-26 08:44:49,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 08:44:49,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 08:44:49,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:44:49,174 INFO L87 Difference]: Start difference. First operand has 80 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 79 states have internal predecessors, (120), 0 states have call successors, (0), 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 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,198 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2021-08-26 08:44:49,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 08:44:49,199 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2021-08-26 08:44:49,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,206 INFO L225 Difference]: With dead ends: 154 [2021-08-26 08:44:49,206 INFO L226 Difference]: Without dead ends: 76 [2021-08-26 08:44:49,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 08:44:49,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-08-26 08:44:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-08-26 08:44:49,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 75 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2021-08-26 08:44:49,241 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2021-08-26 08:44:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:49,242 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2021-08-26 08:44:49,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2021-08-26 08:44:49,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 08:44:49,243 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:49,243 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:49,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 08:44:49,244 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:49,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:49,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1892921914, now seen corresponding path program 1 times [2021-08-26 08:44:49,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:49,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190701246] [2021-08-26 08:44:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:49,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190701246] [2021-08-26 08:44:49,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190701246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 08:44:49,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682310384] [2021-08-26 08:44:49,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:44:49,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:44:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,369 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,385 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2021-08-26 08:44:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:44:49,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-08-26 08:44:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,386 INFO L225 Difference]: With dead ends: 76 [2021-08-26 08:44:49,387 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 08:44:49,388 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 08:44:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-08-26 08:44:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 35 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2021-08-26 08:44:49,394 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2021-08-26 08:44:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:49,395 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2021-08-26 08:44:49,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2021-08-26 08:44:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 08:44:49,396 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:49,397 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] [2021-08-26 08:44:49,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 08:44:49,397 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2021-08-26 08:44:49,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:49,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502720580] [2021-08-26 08:44:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:49,404 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502720580] [2021-08-26 08:44:49,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502720580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:44:49,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560317451] [2021-08-26 08:44:49,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:44:49,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:44:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,501 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,525 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2021-08-26 08:44:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:44:49,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-08-26 08:44:49,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,526 INFO L225 Difference]: With dead ends: 96 [2021-08-26 08:44:49,527 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 08:44:49,527 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 08:44:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2021-08-26 08:44:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 61 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2021-08-26 08:44:49,532 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 22 [2021-08-26 08:44:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2021-08-26 08:44:49,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,533 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2021-08-26 08:44:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-26 08:44:49,533 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:49,533 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] [2021-08-26 08:44:49,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 08:44:49,534 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2021-08-26 08:44:49,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:49,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800185422] [2021-08-26 08:44:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:49,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800185422] [2021-08-26 08:44:49,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800185422] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 08:44:49,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31492008] [2021-08-26 08:44:49,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-26 08:44:49,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-26 08:44:49,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,601 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,631 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2021-08-26 08:44:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-26 08:44:49,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-08-26 08:44:49,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,634 INFO L225 Difference]: With dead ends: 159 [2021-08-26 08:44:49,634 INFO L226 Difference]: Without dead ends: 103 [2021-08-26 08:44:49,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-26 08:44:49,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-26 08:44:49,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2021-08-26 08:44:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.47) internal successors, (147), 100 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2021-08-26 08:44:49,653 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 23 [2021-08-26 08:44:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:49,653 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2021-08-26 08:44:49,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,653 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2021-08-26 08:44:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 08:44:49,654 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:49,654 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] [2021-08-26 08:44:49,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 08:44:49,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:49,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:49,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2021-08-26 08:44:49,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:49,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297602228] [2021-08-26 08:44:49,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:49,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297602228] [2021-08-26 08:44:49,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297602228] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:44:49,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477836117] [2021-08-26 08:44:49,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:49,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:49,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:49,733 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,801 INFO L93 Difference]: Finished difference Result 369 states and 545 transitions. [2021-08-26 08:44:49,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:44:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-08-26 08:44:49,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,803 INFO L225 Difference]: With dead ends: 369 [2021-08-26 08:44:49,803 INFO L226 Difference]: Without dead ends: 274 [2021-08-26 08:44:49,803 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 29.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:44:49,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-08-26 08:44:49,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 182. [2021-08-26 08:44:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4143646408839778) internal successors, (256), 181 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2021-08-26 08:44:49,825 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 25 [2021-08-26 08:44:49,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:49,825 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2021-08-26 08:44:49,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2021-08-26 08:44:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-26 08:44:49,826 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:49,826 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] [2021-08-26 08:44:49,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 08:44:49,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:49,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2850263, now seen corresponding path program 1 times [2021-08-26 08:44:49,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:49,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085560814] [2021-08-26 08:44:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:49,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:49,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:49,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085560814] [2021-08-26 08:44:49,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085560814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:49,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:49,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:44:49,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207265109] [2021-08-26 08:44:49,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:49,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:49,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:49,912 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:49,978 INFO L93 Difference]: Finished difference Result 368 states and 530 transitions. [2021-08-26 08:44:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:44:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2021-08-26 08:44:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:49,980 INFO L225 Difference]: With dead ends: 368 [2021-08-26 08:44:49,980 INFO L226 Difference]: Without dead ends: 366 [2021-08-26 08:44:49,984 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 39.6ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-26 08:44:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-08-26 08:44:50,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 182. [2021-08-26 08:44:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.4033149171270718) internal successors, (254), 181 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2021-08-26 08:44:50,007 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 254 transitions. Word has length 26 [2021-08-26 08:44:50,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,008 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 254 transitions. [2021-08-26 08:44:50,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 254 transitions. [2021-08-26 08:44:50,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:44:50,011 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,011 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] [2021-08-26 08:44:50,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 08:44:50,012 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash -2047428375, now seen corresponding path program 1 times [2021-08-26 08:44:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318007330] [2021-08-26 08:44:50,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,016 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:50,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318007330] [2021-08-26 08:44:50,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318007330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:50,068 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:50,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 08:44:50,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773097339] [2021-08-26 08:44:50,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:44:50,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:44:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:44:50,070 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:50,121 INFO L93 Difference]: Finished difference Result 368 states and 525 transitions. [2021-08-26 08:44:50,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:44:50,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-26 08:44:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:50,123 INFO L225 Difference]: With dead ends: 368 [2021-08-26 08:44:50,123 INFO L226 Difference]: Without dead ends: 273 [2021-08-26 08:44:50,125 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:44:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-26 08:44:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 269. [2021-08-26 08:44:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3992537313432836) internal successors, (375), 268 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 375 transitions. [2021-08-26 08:44:50,135 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 375 transitions. Word has length 30 [2021-08-26 08:44:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,136 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 375 transitions. [2021-08-26 08:44:50,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 375 transitions. [2021-08-26 08:44:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:44:50,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,140 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] [2021-08-26 08:44:50,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-26 08:44:50,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1789262937, now seen corresponding path program 1 times [2021-08-26 08:44:50,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383628828] [2021-08-26 08:44:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:50,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383628828] [2021-08-26 08:44:50,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383628828] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:50,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:50,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:44:50,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380791792] [2021-08-26 08:44:50,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:44:50,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:44:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:44:50,202 INFO L87 Difference]: Start difference. First operand 269 states and 375 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:50,237 INFO L93 Difference]: Finished difference Result 775 states and 1100 transitions. [2021-08-26 08:44:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 08:44:50,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-26 08:44:50,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:50,239 INFO L225 Difference]: With dead ends: 775 [2021-08-26 08:44:50,240 INFO L226 Difference]: Without dead ends: 591 [2021-08-26 08:44:50,241 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-08-26 08:44:50,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 269. [2021-08-26 08:44:50,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3917910447761195) internal successors, (373), 268 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 373 transitions. [2021-08-26 08:44:50,258 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 373 transitions. Word has length 30 [2021-08-26 08:44:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,259 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 373 transitions. [2021-08-26 08:44:50,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,259 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 373 transitions. [2021-08-26 08:44:50,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-08-26 08:44:50,259 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,259 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] [2021-08-26 08:44:50,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-26 08:44:50,260 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2112677349, now seen corresponding path program 1 times [2021-08-26 08:44:50,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863492530] [2021-08-26 08:44:50,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,261 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:50,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863492530] [2021-08-26 08:44:50,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863492530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:50,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:50,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:44:50,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324866244] [2021-08-26 08:44:50,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:50,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:50,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:50,311 INFO L87 Difference]: Start difference. First operand 269 states and 373 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:50,387 INFO L93 Difference]: Finished difference Result 567 states and 798 transitions. [2021-08-26 08:44:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:44:50,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2021-08-26 08:44:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:50,389 INFO L225 Difference]: With dead ends: 567 [2021-08-26 08:44:50,389 INFO L226 Difference]: Without dead ends: 383 [2021-08-26 08:44:50,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 08:44:50,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-08-26 08:44:50,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 300. [2021-08-26 08:44:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 1.4013377926421404) internal successors, (419), 299 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 419 transitions. [2021-08-26 08:44:50,404 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 419 transitions. Word has length 30 [2021-08-26 08:44:50,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,404 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 419 transitions. [2021-08-26 08:44:50,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,404 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 419 transitions. [2021-08-26 08:44:50,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 08:44:50,405 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,406 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:50,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-26 08:44:50,406 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1758708758, now seen corresponding path program 1 times [2021-08-26 08:44:50,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231037122] [2021-08-26 08:44:50,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 08:44:50,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231037122] [2021-08-26 08:44:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231037122] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:50,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:50,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-26 08:44:50,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582885352] [2021-08-26 08:44:50,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 08:44:50,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 08:44:50,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:50,469 INFO L87 Difference]: Start difference. First operand 300 states and 419 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:50,513 INFO L93 Difference]: Finished difference Result 832 states and 1157 transitions. [2021-08-26 08:44:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 08:44:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 44 [2021-08-26 08:44:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:50,515 INFO L225 Difference]: With dead ends: 832 [2021-08-26 08:44:50,515 INFO L226 Difference]: Without dead ends: 538 [2021-08-26 08:44:50,516 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-26 08:44:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-08-26 08:44:50,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 312. [2021-08-26 08:44:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.3858520900321543) internal successors, (431), 311 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 431 transitions. [2021-08-26 08:44:50,531 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 431 transitions. Word has length 44 [2021-08-26 08:44:50,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,532 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 431 transitions. [2021-08-26 08:44:50,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 431 transitions. [2021-08-26 08:44:50,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-08-26 08:44:50,533 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,533 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:50,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-26 08:44:50,534 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1899257368, now seen corresponding path program 1 times [2021-08-26 08:44:50,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967324288] [2021-08-26 08:44:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-26 08:44:50,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967324288] [2021-08-26 08:44:50,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967324288] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 08:44:50,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 08:44:50,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 08:44:50,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178419791] [2021-08-26 08:44:50,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 08:44:50,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 08:44:50,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 08:44:50,566 INFO L87 Difference]: Start difference. First operand 312 states and 431 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:50,594 INFO L93 Difference]: Finished difference Result 670 states and 921 transitions. [2021-08-26 08:44:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 08:44:50,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 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 44 [2021-08-26 08:44:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:50,596 INFO L225 Difference]: With dead ends: 670 [2021-08-26 08:44:50,596 INFO L226 Difference]: Without dead ends: 364 [2021-08-26 08:44:50,597 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 08:44:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-08-26 08:44:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 255. [2021-08-26 08:44:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3503937007874016) internal successors, (343), 254 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) [2021-08-26 08:44:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 343 transitions. [2021-08-26 08:44:50,611 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 343 transitions. Word has length 44 [2021-08-26 08:44:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:50,612 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 343 transitions. [2021-08-26 08:44:50,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 343 transitions. [2021-08-26 08:44:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-26 08:44:50,612 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:50,613 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:50,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-26 08:44:50,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:50,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1942803224, now seen corresponding path program 1 times [2021-08-26 08:44:50,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:50,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864964602] [2021-08-26 08:44:50,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,660 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:50,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 08:44:50,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864964602] [2021-08-26 08:44:50,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864964602] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:44:50,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286410859] [2021-08-26 08:44:50,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:50,662 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 08:44:50,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 08:44:50,663 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) [2021-08-26 08:44:50,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 08:44:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 08:44:50,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-26 08:44:50,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 08:44:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 08:44:50,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286410859] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 08:44:50,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-26 08:44:50,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-08-26 08:44:50,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248739866] [2021-08-26 08:44:50,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 08:44:50,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 08:44:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 08:44:50,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 08:44:50,949 INFO L87 Difference]: Start difference. First operand 255 states and 343 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:51,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 08:44:51,098 INFO L93 Difference]: Finished difference Result 717 states and 987 transitions. [2021-08-26 08:44:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 08:44:51,098 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-08-26 08:44:51,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 08:44:51,100 INFO L225 Difference]: With dead ends: 717 [2021-08-26 08:44:51,100 INFO L226 Difference]: Without dead ends: 522 [2021-08-26 08:44:51,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-08-26 08:44:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-08-26 08:44:51,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 315. [2021-08-26 08:44:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.3535031847133758) internal successors, (425), 314 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 425 transitions. [2021-08-26 08:44:51,118 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 425 transitions. Word has length 45 [2021-08-26 08:44:51,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 08:44:51,119 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 425 transitions. [2021-08-26 08:44:51,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 08:44:51,119 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 425 transitions. [2021-08-26 08:44:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-26 08:44:51,119 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 08:44:51,120 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 08:44:51,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 08:44:51,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-08-26 08:44:51,333 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 08:44:51,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 08:44:51,333 INFO L82 PathProgramCache]: Analyzing trace with hash 511998341, now seen corresponding path program 2 times [2021-08-26 08:44:51,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 08:44:51,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244052952] [2021-08-26 08:44:51,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 08:44:51,333 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 08:44:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:44:51,374 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 08:44:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 08:44:51,462 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 08:44:51,462 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 08:44:51,463 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:51,464 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 08:44:51,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-26 08:44:51,468 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 08:44:51,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 08:44:51 BoogieIcfgContainer [2021-08-26 08:44:51,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 08:44:51,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 08:44:51,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 08:44:51,564 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 08:44:51,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 08:44:48" (3/4) ... [2021-08-26 08:44:51,566 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 08:44:51,635 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 08:44:51,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 08:44:51,636 INFO L168 Benchmark]: Toolchain (without parser) took 3772.31 ms. Allocated memory was 77.6 MB in the beginning and 161.5 MB in the end (delta: 83.9 MB). Free memory was 61.4 MB in the beginning and 105.6 MB in the end (delta: -44.2 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,636 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 77.6 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 08:44:51,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.99 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 54.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.98 ms. Allocated memory is still 77.6 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,637 INFO L168 Benchmark]: Boogie Preprocessor took 39.59 ms. Allocated memory is still 77.6 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,637 INFO L168 Benchmark]: RCFGBuilder took 588.20 ms. Allocated memory was 77.6 MB in the beginning and 111.1 MB in the end (delta: 33.6 MB). Free memory was 49.6 MB in the beginning and 50.2 MB in the end (delta: -608.4 kB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,637 INFO L168 Benchmark]: TraceAbstraction took 2672.55 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 49.6 MB in the beginning and 128.6 MB in the end (delta: -79.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,638 INFO L168 Benchmark]: Witness Printer took 71.14 ms. Allocated memory is still 161.5 MB. Free memory was 128.6 MB in the beginning and 105.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-08-26 08:44:51,639 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 77.6 MB. Free memory is still 60.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.99 ms. Allocated memory is still 77.6 MB. Free memory was 61.1 MB in the beginning and 54.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.98 ms. Allocated memory is still 77.6 MB. Free memory was 54.6 MB in the beginning and 51.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.59 ms. Allocated memory is still 77.6 MB. Free memory was 51.7 MB in the beginning and 49.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 588.20 ms. Allocated memory was 77.6 MB in the beginning and 111.1 MB in the end (delta: 33.6 MB). Free memory was 49.6 MB in the beginning and 50.2 MB in the end (delta: -608.4 kB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2672.55 ms. Allocated memory was 111.1 MB in the beginning and 161.5 MB in the end (delta: 50.3 MB). Free memory was 49.6 MB in the beginning and 128.6 MB in the end (delta: -79.1 MB). Peak memory consumption was 39.3 MB. Max. memory is 16.1 GB. * Witness Printer took 71.14 ms. Allocated memory is still 161.5 MB. Free memory was 128.6 MB in the beginning and 105.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 786]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L150] int pumpRunning = 0; [L151] int systemActive = 1; [L317] int cleanupTimeShifts = 4; [L585] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L826] int waterLevel = 1; [L827] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L393] int retValue_acc ; [L394] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L817] int retValue_acc ; [L820] retValue_acc = 1 [L821] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L400] tmp = valid_product() [L402] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L48] int splverifierCounter ; [L49] int tmp ; [L50] int tmp___0 ; [L51] int tmp___1 ; [L52] int tmp___2 ; [L55] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L844] COND TRUE waterLevel < 2 [L845] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L157] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L906] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L909] COND FALSE !(waterLevel < 2) [L913] retValue_acc = 0 [L914] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L191] tmp = isHighWaterLevel() [L193] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L123] tmp = getWaterLevel() [L125] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L59] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L65] tmp = __VERIFIER_nondet_int() [L67] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L75] tmp___0 = __VERIFIER_nondet_int() [L77] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L85] tmp___2 = __VERIFIER_nondet_int() [L87] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L157] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L832] COND TRUE waterLevel > 0 [L833] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L118] int tmp ; [L119] int tmp___0 ; [L897] int retValue_acc ; [L900] retValue_acc = waterLevel [L901] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L123] tmp = getWaterLevel() [L125] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L127] tmp___0 = isPumpRunning() [L129] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L786] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - UnprovableResult [Line: 786]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2525.6ms, OverallIterations: 13, TraceHistogramMax: 3, EmptinessCheckTime: 20.3ms, AutomataDifference: 680.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1000 SDtfs, 1057 SDslu, 1407 SDs, 0 SdLazy, 226 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 230.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 183.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=315occurred in iteration=12, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 184.5ms AutomataMinimizationTime, 12 MinimizatonAttempts, 1233 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 68.7ms SsaConstructionTime, 364.9ms SatisfiabilityAnalysisTime, 621.5ms InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 384 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 SizeOfPredicates, 3 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 50/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 08:44:51,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...