./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.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/nla-digbench-scaling/hard2_valuebound1.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 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 06:50:03,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:50:03,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:50:03,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:50:03,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:50:03,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:50:03,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:50:03,527 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:50:03,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:50:03,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:50:03,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:50:03,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:50:03,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:50:03,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:50:03,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:50:03,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:50:03,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:50:03,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:50:03,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:50:03,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:50:03,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:50:03,568 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:50:03,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:50:03,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:50:03,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:50:03,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:50:03,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:50:03,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:50:03,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:50:03,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:50:03,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:50:03,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:50:03,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:50:03,584 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:50:03,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:50:03,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:50:03,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:50:03,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:50:03,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:50:03,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:50:03,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:50:03,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:50:03,629 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:50:03,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:50:03,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:50:03,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:50:03,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:50:03,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:50:03,634 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:50:03,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:50:03,634 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:50:03,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:50:03,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:50:03,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:50:03,637 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:50:03,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:50:03,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:50:03,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:50:03,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:50:03,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:50:03,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:50:03,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:50:03,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:50:03,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:50:03,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:50:03,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:50:03,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:50:03,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7ab7fb07c84cec955ed17f81b1e4c956a66f53 [2021-08-26 06:50:03,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:50:03,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:50:03,976 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:50:03,977 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:50:03,978 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:50:03,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-08-26 06:50:04,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3bb6267/ef0d06990942482fb14d3b35ac5a32f9/FLAGe6fa4e2ee [2021-08-26 06:50:04,463 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:50:04,464 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-08-26 06:50:04,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3bb6267/ef0d06990942482fb14d3b35ac5a32f9/FLAGe6fa4e2ee [2021-08-26 06:50:04,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a3bb6267/ef0d06990942482fb14d3b35ac5a32f9 [2021-08-26 06:50:04,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:50:04,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:50:04,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:50:04,898 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:50:04,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:50:04,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:50:04" (1/1) ... [2021-08-26 06:50:04,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f62e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:04, skipping insertion in model container [2021-08-26 06:50:04,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:50:04" (1/1) ... [2021-08-26 06:50:04,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:50:04,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:50:05,091 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/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-08-26 06:50:05,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:50:05,121 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:50:05,134 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/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-08-26 06:50:05,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:50:05,194 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:50:05,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05 WrapperNode [2021-08-26 06:50:05,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:50:05,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:50:05,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:50:05,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:50:05,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:50:05,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:50:05,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:50:05,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:50:05,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:50:05,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:50:05,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:50:05,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:50:05,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (1/1) ... [2021-08-26 06:50:05,297 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:50:05,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:05,318 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 06:50:05,348 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 06:50:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:50:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:50:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:50:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:50:05,711 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:50:05,711 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-08-26 06:50:05,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:50:05 BoogieIcfgContainer [2021-08-26 06:50:05,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:50:05,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:50:05,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:50:05,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:50:05,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:50:04" (1/3) ... [2021-08-26 06:50:05,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523d0bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:50:05, skipping insertion in model container [2021-08-26 06:50:05,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:50:05" (2/3) ... [2021-08-26 06:50:05,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523d0bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:50:05, skipping insertion in model container [2021-08-26 06:50:05,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:50:05" (3/3) ... [2021-08-26 06:50:05,722 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2021-08-26 06:50:05,726 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:50:05,727 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 06:50:05,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:50:05,802 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 06:50:05,802 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 06:50:05,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 06:50:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:50:05,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:05,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:05,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-08-26 06:50:05,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:05,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023211078] [2021-08-26 06:50:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:05,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:50:06,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:06,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023211078] [2021-08-26 06:50:06,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023211078] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:06,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:06,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 06:50:06,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137393959] [2021-08-26 06:50:06,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 06:50:06,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:06,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 06:50:06,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 06:50:06,041 INFO L87 Difference]: Start difference. First operand has 39 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:06,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:06,060 INFO L93 Difference]: Finished difference Result 75 states and 102 transitions. [2021-08-26 06:50:06,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 06:50:06,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-26 06:50:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:06,068 INFO L225 Difference]: With dead ends: 75 [2021-08-26 06:50:06,069 INFO L226 Difference]: Without dead ends: 35 [2021-08-26 06:50:06,071 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 06:50:06,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-26 06:50:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-26 06:50:06,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 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 06:50:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-08-26 06:50:06,105 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-08-26 06:50:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:06,107 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-08-26 06:50:06,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:06,108 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-08-26 06:50:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:50:06,108 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:06,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:06,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 06:50:06,109 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:06,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:06,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-08-26 06:50:06,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:06,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070840357] [2021-08-26 06:50:06,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:06,113 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:06,234 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 06:50:06,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:06,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070840357] [2021-08-26 06:50:06,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070840357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:06,235 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:06,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:50:06,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810516719] [2021-08-26 06:50:06,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:50:06,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:50:06,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:50:06,239 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:06,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:06,353 INFO L93 Difference]: Finished difference Result 54 states and 57 transitions. [2021-08-26 06:50:06,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:50:06,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-26 06:50:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:06,356 INFO L225 Difference]: With dead ends: 54 [2021-08-26 06:50:06,361 INFO L226 Difference]: Without dead ends: 52 [2021-08-26 06:50:06,362 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:50:06,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-26 06:50:06,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2021-08-26 06:50:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 06:50:06,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-08-26 06:50:06,374 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 7 [2021-08-26 06:50:06,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:06,374 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-08-26 06:50:06,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:06,375 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-08-26 06:50:06,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:50:06,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:06,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:06,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 06:50:06,377 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-08-26 06:50:06,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:06,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099789400] [2021-08-26 06:50:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:06,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:06,460 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 06:50:06,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:06,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099789400] [2021-08-26 06:50:06,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099789400] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:06,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:06,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:50:06,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452464663] [2021-08-26 06:50:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:50:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:50:06,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:50:06,470 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:50:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:06,603 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2021-08-26 06:50:06,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:50:06,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-08-26 06:50:06,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:06,611 INFO L225 Difference]: With dead ends: 52 [2021-08-26 06:50:06,612 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 06:50:06,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:50:06,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 06:50:06,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2021-08-26 06:50:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 06:50:06,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-08-26 06:50:06,624 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 9 [2021-08-26 06:50:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:06,625 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-08-26 06:50:06,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:50:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-08-26 06:50:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 06:50:06,626 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:06,626 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:06,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 06:50:06,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:06,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:06,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-08-26 06:50:06,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:06,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108018304] [2021-08-26 06:50:06,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:06,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:06,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:06,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260961355] [2021-08-26 06:50:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:06,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:06,646 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 06:50:06,665 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 06:50:06,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:06,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:50:06,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:07,033 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 06:50:07,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:07,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108018304] [2021-08-26 06:50:07,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:07,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260961355] [2021-08-26 06:50:07,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260961355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:07,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:07,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:50:07,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749631478] [2021-08-26 06:50:07,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:50:07,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:50:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:50:07,036 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:07,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:07,163 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-08-26 06:50:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:50:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 06:50:07,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:07,165 INFO L225 Difference]: With dead ends: 72 [2021-08-26 06:50:07,166 INFO L226 Difference]: Without dead ends: 50 [2021-08-26 06:50:07,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:50:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-26 06:50:07,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-08-26 06:50:07,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.225) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 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 06:50:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-08-26 06:50:07,185 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-08-26 06:50:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:07,185 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-08-26 06:50:07,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-08-26 06:50:07,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 06:50:07,186 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:07,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:07,210 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 06:50:07,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:07,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:07,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1783857492, now seen corresponding path program 1 times [2021-08-26 06:50:07,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:07,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347141735] [2021-08-26 06:50:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:07,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:07,436 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:07,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6146727] [2021-08-26 06:50:07,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:07,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:07,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:07,451 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:50:07,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 06:50:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 06:50:07,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:08,063 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 06:50:08,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347141735] [2021-08-26 06:50:08,064 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6146727] [2021-08-26 06:50:08,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6146727] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:08,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:08,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:50:08,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568853654] [2021-08-26 06:50:08,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:50:08,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:50:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:50:08,068 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 06:50:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:08,222 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-08-26 06:50:08,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 06:50:08,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2021-08-26 06:50:08,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:08,224 INFO L225 Difference]: With dead ends: 63 [2021-08-26 06:50:08,224 INFO L226 Difference]: Without dead ends: 52 [2021-08-26 06:50:08,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:50:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-08-26 06:50:08,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-08-26 06:50:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 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 06:50:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-08-26 06:50:08,238 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-08-26 06:50:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:08,239 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-08-26 06:50:08,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 06:50:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-08-26 06:50:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 06:50:08,243 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:08,244 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:08,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:50:08,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:08,460 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:08,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:08,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-08-26 06:50:08,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:08,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667559255] [2021-08-26 06:50:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:08,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:08,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:08,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155515393] [2021-08-26 06:50:08,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:08,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:08,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:50:08,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 06:50:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:08,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 06:50:08,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:08,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:50:08,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:08,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667559255] [2021-08-26 06:50:08,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:08,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155515393] [2021-08-26 06:50:08,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155515393] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:50:08,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:50:08,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-08-26 06:50:08,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814866466] [2021-08-26 06:50:08,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-26 06:50:08,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:08,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-26 06:50:08,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:50:08,887 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 06:50:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:09,030 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-08-26 06:50:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:50:09,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-08-26 06:50:09,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:09,032 INFO L225 Difference]: With dead ends: 108 [2021-08-26 06:50:09,032 INFO L226 Difference]: Without dead ends: 71 [2021-08-26 06:50:09,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.8ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:50:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-26 06:50:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2021-08-26 06:50:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 65 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2021-08-26 06:50:09,038 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 18 [2021-08-26 06:50:09,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:09,039 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2021-08-26 06:50:09,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 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 06:50:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2021-08-26 06:50:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 06:50:09,039 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:09,040 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:09,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 06:50:09,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:09,265 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:09,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-08-26 06:50:09,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:09,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318424490] [2021-08-26 06:50:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:09,266 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:09,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:09,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740787668] [2021-08-26 06:50:09,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-26 06:50:09,276 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:09,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:09,285 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:50:09,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-26 06:50:09,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-26 06:50:09,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-26 06:50:09,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 06:50:09,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:50:09,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:09,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318424490] [2021-08-26 06:50:09,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:09,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740787668] [2021-08-26 06:50:09,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740787668] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:50:09,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:50:09,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 06:50:09,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326073978] [2021-08-26 06:50:09,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 06:50:09,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 06:50:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:50:09,725 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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 06:50:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:09,860 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2021-08-26 06:50:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 06:50:09,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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 06:50:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:09,861 INFO L225 Difference]: With dead ends: 70 [2021-08-26 06:50:09,861 INFO L226 Difference]: Without dead ends: 35 [2021-08-26 06:50:09,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:50:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-08-26 06:50:09,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-08-26 06:50:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 06:50:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2021-08-26 06:50:09,866 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 25 [2021-08-26 06:50:09,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:09,866 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2021-08-26 06:50:09,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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 06:50:09,867 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2021-08-26 06:50:09,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-26 06:50:09,867 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:09,868 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:50:09,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-26 06:50:10,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:10,089 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:10,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:10,090 INFO L82 PathProgramCache]: Analyzing trace with hash 115055918, now seen corresponding path program 1 times [2021-08-26 06:50:10,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:10,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294261518] [2021-08-26 06:50:10,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:10,090 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:10,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:10,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [816219076] [2021-08-26 06:50:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:10,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:10,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:50:10,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-26 06:50:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:10,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 25 conjunts are in the unsatisfiable core [2021-08-26 06:50:10,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:50:10,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:10,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294261518] [2021-08-26 06:50:10,986 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:10,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816219076] [2021-08-26 06:50:10,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816219076] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:50:10,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:50:10,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-08-26 06:50:10,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135187216] [2021-08-26 06:50:10,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 06:50:10,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:10,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 06:50:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 06:50:10,990 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 06:50:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:11,133 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2021-08-26 06:50:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 06:50:11,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-08-26 06:50:11,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:11,134 INFO L225 Difference]: With dead ends: 35 [2021-08-26 06:50:11,134 INFO L226 Difference]: Without dead ends: 33 [2021-08-26 06:50:11,135 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-26 06:50:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-08-26 06:50:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-08-26 06:50:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0) internal successors, (32), 32 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 06:50:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-08-26 06:50:11,141 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 27 [2021-08-26 06:50:11,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:11,141 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-08-26 06:50:11,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 06:50:11,142 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-08-26 06:50:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-26 06:50:11,142 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:50:11,142 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] [2021-08-26 06:50:11,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-26 06:50:11,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:11,368 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 06:50:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:50:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1492250324, now seen corresponding path program 1 times [2021-08-26 06:50:11,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:50:11,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678039893] [2021-08-26 06:50:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:11,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:50:11,378 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:50:11,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279620829] [2021-08-26 06:50:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:50:11,379 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:11,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:50:11,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:50:11,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-26 06:50:11,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:50:11,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-08-26 06:50:11,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:50:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:50:12,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:50:12,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678039893] [2021-08-26 06:50:12,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:50:12,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279620829] [2021-08-26 06:50:12,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279620829] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-26 06:50:12,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-08-26 06:50:12,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-08-26 06:50:12,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069620152] [2021-08-26 06:50:12,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 06:50:12,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:50:12,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 06:50:12,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-08-26 06:50:12,299 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 06:50:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:50:12,426 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-08-26 06:50:12,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 06:50:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-08-26 06:50:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:50:12,427 INFO L225 Difference]: With dead ends: 33 [2021-08-26 06:50:12,427 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 06:50:12,428 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 109.1ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-08-26 06:50:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 06:50:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 06:50:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:50:12,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 06:50:12,428 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2021-08-26 06:50:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:50:12,430 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 06:50:12,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 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 06:50:12,431 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 06:50:12,431 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 06:50:12,433 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,434 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,435 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:50:12,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-26 06:50:12,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:50:12,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 06:50:12,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,682 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,731 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:12,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 06:50:13,601 INFO L860 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-08-26 06:50:13,601 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,601 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-08-26 06:50:13,601 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-08-26 06:50:13,601 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,602 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,603 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,603 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,603 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (<= ULTIMATE.start_main_~r~0 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~d~0 1) .cse5 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-08-26 06:50:13,603 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,603 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (<= ULTIMATE.start_main_~r~0 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~d~0 1) .cse5 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-08-26 06:50:13,603 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,604 INFO L853 garLoopResultBuilder]: At program point L15-8(line 38) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse5 (<= ULTIMATE.start_main_~r~0 1))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 (= ULTIMATE.start_main_~d~0 1) .cse5 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-08-26 06:50:13,604 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,604 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse2 (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) (<= ULTIMATE.start_main_~A~0 1) (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~q~0 1) .cse5))) [2021-08-26 06:50:13,604 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,604 INFO L853 garLoopResultBuilder]: At program point L15-14(line 48) the Hoare annotation is: (let ((.cse3 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse4 (= ULTIMATE.start_main_~q~0 0)) (.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~d~0 2) .cse3 .cse4 (<= ULTIMATE.start_main_~r~0 1) (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse2 (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~A~0 (+ ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~r~0)) (= ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) (<= ULTIMATE.start_main_~A~0 1) (= ULTIMATE.start_main_~d~0 1) (= ULTIMATE.start_main_~q~0 1) .cse5))) [2021-08-26 06:50:13,604 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,605 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 06:50:13,605 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~B~0 1) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-08-26 06:50:13,605 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-08-26 06:50:13,605 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-08-26 06:50:13,605 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,605 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,605 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 06:50:13,606 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~A~0)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= ULTIMATE.start_main_~A~0 ULTIMATE.start_main_~r~0)) (.cse3 (= ULTIMATE.start_main_~q~0 0)) (.cse4 (<= ULTIMATE.start_main_~r~0 1))) (or (and .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~d~0 2) .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~p~0 2) (= ULTIMATE.start_main_~d~0 (* 2 ULTIMATE.start_main_~B~0))) (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (= ULTIMATE.start_main_~d~0 1) .cse4 (= ULTIMATE.start_main_~B~0 ULTIMATE.start_main_~d~0)))) [2021-08-26 06:50:13,607 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-08-26 06:50:13,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:50:13,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:50:13 BoogieIcfgContainer [2021-08-26 06:50:13,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:50:13,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:50:13,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:50:13,628 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:50:13,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:50:05" (3/4) ... [2021-08-26 06:50:13,632 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 06:50:13,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-26 06:50:13,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 06:50:13,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:50:13,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 06:50:13,673 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:50:13,674 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:50:13,675 INFO L168 Benchmark]: Toolchain (without parser) took 8779.23 ms. Allocated memory was 54.5 MB in the beginning and 119.5 MB in the end (delta: 65.0 MB). Free memory was 33.4 MB in the beginning and 55.2 MB in the end (delta: -21.8 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:50:13,676 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:50:13,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.57 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 38.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:50:13,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 54.5 MB. Free memory was 38.7 MB in the beginning and 37.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:50:13,677 INFO L168 Benchmark]: Boogie Preprocessor took 43.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 36.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:50:13,677 INFO L168 Benchmark]: RCFGBuilder took 425.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 45.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:50:13,677 INFO L168 Benchmark]: TraceAbstraction took 7912.20 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 45.1 MB in the beginning and 58.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 16.1 GB. [2021-08-26 06:50:13,677 INFO L168 Benchmark]: Witness Printer took 45.85 ms. Allocated memory is still 119.5 MB. Free memory was 58.3 MB in the beginning and 55.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:50:13,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 54.5 MB. Free memory was 36.5 MB in the beginning and 36.5 MB in the end (delta: 44.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 298.57 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 38.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.26 ms. Allocated memory is still 54.5 MB. Free memory was 38.7 MB in the beginning and 37.1 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 36.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 425.51 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 35.8 MB in the beginning and 45.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7912.20 ms. Allocated memory was 67.1 MB in the beginning and 119.5 MB in the end (delta: 52.4 MB). Free memory was 45.1 MB in the beginning and 58.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 16.1 GB. * Witness Printer took 45.85 ms. Allocated memory is still 119.5 MB. Free memory was 58.3 MB in the beginning and 55.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 7818.3ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 13.4ms, AutomataDifference: 1163.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 943.0ms, InitialAbstractionConstructionTime: 16.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 198 SDtfs, 221 SDslu, 220 SDs, 0 SdLazy, 393 SolverSat, 81 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 482.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 546.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=6, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 92.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 54 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 27 NumberOfFragments, 409 HoareAnnotationTreeSize, 9 FomulaSimplifications, 471 FormulaSimplificationTreeSizeReduction, 97.4ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 184 FormulaSimplificationTreeSizeReductionInter, 838.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 77.9ms SsaConstructionTime, 228.4ms SatisfiabilityAnalysisTime, 2934.9ms InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 141 ConstructedInterpolants, 0 QuantifiedInterpolants, 1181 SizeOfPredicates, 32 NumberOfNonLiveVariables, 572 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 19/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || ((((((((0 <= A && cond == 1) && 1 <= cond) && A == B + r) && q == p) && A <= 1) && d == 1) && q == 1) && B == d) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((B == 1 && p == 1) && B == d) && !(0 == cond) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: (((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || (((((1 <= cond && B == 1) && p == 1) && A == r) && q == 0) && B == d)) || ((((((((0 <= A && cond == 1) && 1 <= cond) && A == B + r) && q == p) && A <= 1) && d == 1) && q == 1) && B == d) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || ((((((((0 <= A && cond == 1) && 1 <= cond) && p == 1) && A == r) && q == 0) && d == 1) && r <= 1) && B == d) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || ((((((((0 <= A && cond == 1) && 1 <= cond) && p == 1) && A == r) && q == 0) && d == 1) && r <= 1) && B == d) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || (((((((0 <= A && cond == 1) && p == 1) && A == r) && q == 0) && d == 1) && r <= 1) && B == d) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((0 <= A && cond == 1) && 1 <= cond) && d == 2) && A == r) && q == 0) && r <= 1) && p == 2) && d == 2 * B) || ((((((((0 <= A && cond == 1) && 1 <= cond) && p == 1) && A == r) && q == 0) && d == 1) && r <= 1) && B == d) RESULT: Ultimate proved your program to be correct! [2021-08-26 06:50:13,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...