./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_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/egcd-ll_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 b16d444b17d990870a86defe9950d11248e76627 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 05:51:36,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 05:51:36,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 05:51:36,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 05:51:36,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 05:51:36,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 05:51:36,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 05:51:36,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 05:51:36,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 05:51:36,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 05:51:36,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 05:51:36,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 05:51:36,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 05:51:36,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 05:51:36,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 05:51:36,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 05:51:36,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 05:51:36,363 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 05:51:36,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 05:51:36,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 05:51:36,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 05:51:36,369 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 05:51:36,370 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 05:51:36,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 05:51:36,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 05:51:36,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 05:51:36,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 05:51:36,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 05:51:36,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 05:51:36,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 05:51:36,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 05:51:36,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 05:51:36,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 05:51:36,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 05:51:36,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 05:51:36,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 05:51:36,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 05:51:36,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 05:51:36,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 05:51:36,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 05:51:36,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 05:51:36,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 05:51:36,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 05:51:36,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 05:51:36,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 05:51:36,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 05:51:36,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 05:51:36,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 05:51:36,422 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 05:51:36,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 05:51:36,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 05:51:36,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 05:51:36,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 05:51:36,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 05:51:36,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 05:51:36,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 05:51:36,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 05:51:36,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 05:51:36,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 05:51:36,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:51:36,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 05:51:36,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 05:51:36,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 05:51:36,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 05:51:36,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 05:51:36,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 05:51:36,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 05:51:36,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b16d444b17d990870a86defe9950d11248e76627 [2021-08-26 05:51:36,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 05:51:36,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 05:51:36,727 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 05:51:36,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 05:51:36,729 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 05:51:36,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2021-08-26 05:51:36,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeb0b3c6/cc50fdcf709b42b8ad48055eff400a90/FLAG3bcc6dfb4 [2021-08-26 05:51:37,275 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 05:51:37,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound1.c [2021-08-26 05:51:37,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeb0b3c6/cc50fdcf709b42b8ad48055eff400a90/FLAG3bcc6dfb4 [2021-08-26 05:51:37,673 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eeb0b3c6/cc50fdcf709b42b8ad48055eff400a90 [2021-08-26 05:51:37,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 05:51:37,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 05:51:37,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 05:51:37,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 05:51:37,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 05:51:37,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366d3600 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37, skipping insertion in model container [2021-08-26 05:51:37,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,695 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 05:51:37,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 05:51:37,835 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/egcd-ll_valuebound1.c[489,502] [2021-08-26 05:51:37,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:51:37,858 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 05:51:37,869 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/egcd-ll_valuebound1.c[489,502] [2021-08-26 05:51:37,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 05:51:37,888 INFO L208 MainTranslator]: Completed translation [2021-08-26 05:51:37,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37 WrapperNode [2021-08-26 05:51:37,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 05:51:37,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 05:51:37,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 05:51:37,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 05:51:37,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 05:51:37,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 05:51:37,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 05:51:37,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 05:51:37,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 05:51:37,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 05:51:37,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 05:51:37,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 05:51:37,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (1/1) ... [2021-08-26 05:51:37,996 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 05:51:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:38,014 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 05:51:38,026 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 05:51:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 05:51:38,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 05:51:38,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 05:51:38,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 05:51:38,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 05:51:38,389 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-08-26 05:51:38,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:38 BoogieIcfgContainer [2021-08-26 05:51:38,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 05:51:38,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 05:51:38,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 05:51:38,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 05:51:38,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 05:51:37" (1/3) ... [2021-08-26 05:51:38,397 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a913a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:51:38, skipping insertion in model container [2021-08-26 05:51:38,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 05:51:37" (2/3) ... [2021-08-26 05:51:38,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a913a5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 05:51:38, skipping insertion in model container [2021-08-26 05:51:38,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:38" (3/3) ... [2021-08-26 05:51:38,400 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound1.c [2021-08-26 05:51:38,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 05:51:38,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-08-26 05:51:38,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 05:51:38,475 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 05:51:38,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-26 05:51:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 05:51:38,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:51:38,497 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:38,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:38,499 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 05:51:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:38,505 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2021-08-26 05:51:38,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:38,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607763091] [2021-08-26 05:51:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:38,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:38,630 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 05:51:38,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:38,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607763091] [2021-08-26 05:51:38,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607763091] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:38,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:38,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 05:51:38,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838014797] [2021-08-26 05:51:38,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 05:51:38,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:38,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 05:51:38,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 05:51:38,651 INFO L87 Difference]: Start difference. First operand has 44 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 43 states have internal predecessors, (58), 0 states have call successors, (0), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 05:51:38,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:38,666 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-08-26 05:51:38,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 05:51:38,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-08-26 05:51:38,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:38,674 INFO L225 Difference]: With dead ends: 85 [2021-08-26 05:51:38,674 INFO L226 Difference]: Without dead ends: 40 [2021-08-26 05:51:38,677 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 05:51:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-26 05:51:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-08-26 05:51:38,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 05:51:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-08-26 05:51:38,704 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 13 [2021-08-26 05:51:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-08-26 05:51:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 05:51:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-08-26 05:51:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 05:51:38,706 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:38,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:38,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 05:51:38,707 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 05:51:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:38,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2021-08-26 05:51:38,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:38,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539459583] [2021-08-26 05:51:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:38,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:38,725 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:38,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735558904] [2021-08-26 05:51:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:38,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:38,729 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 05:51:38,759 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 05:51:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:38,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-26 05:51:38,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:38,994 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 05:51:38,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:38,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539459583] [2021-08-26 05:51:38,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:38,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735558904] [2021-08-26 05:51:38,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735558904] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:38,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:38,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:51:38,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511808544] [2021-08-26 05:51:39,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:51:39,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:51:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:51:39,003 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 05:51:39,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:39,122 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-08-26 05:51:39,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:51:39,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-08-26 05:51:39,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:39,125 INFO L225 Difference]: With dead ends: 70 [2021-08-26 05:51:39,125 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 05:51:39,127 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 05:51:39,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2021-08-26 05:51:39,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.297872340425532) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-08-26 05:51:39,142 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 13 [2021-08-26 05:51:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:39,142 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-08-26 05:51:39,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 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 05:51:39,143 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-08-26 05:51:39,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 05:51:39,144 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:39,144 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:39,173 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 05:51:39,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:39,358 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 05:51:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:39,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1454243009, now seen corresponding path program 1 times [2021-08-26 05:51:39,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:39,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571853975] [2021-08-26 05:51:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:39,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:39,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:39,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040931320] [2021-08-26 05:51:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:39,389 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:39,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:39,391 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 05:51:39,393 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 05:51:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:39,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 29 conjunts are in the unsatisfiable core [2021-08-26 05:51:39,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:40,085 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 05:51:40,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:40,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571853975] [2021-08-26 05:51:40,086 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:40,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040931320] [2021-08-26 05:51:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040931320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:40,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:40,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-26 05:51:40,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66950558] [2021-08-26 05:51:40,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 05:51:40,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:40,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 05:51:40,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:51:40,093 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 05:51:40,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:40,469 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-26 05:51:40,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-26 05:51:40,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-08-26 05:51:40,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:40,471 INFO L225 Difference]: With dead ends: 66 [2021-08-26 05:51:40,471 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 05:51:40,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 402.1ms TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-08-26 05:51:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 05:51:40,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-08-26 05:51:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2765957446808511) internal successors, (60), 53 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 05:51:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2021-08-26 05:51:40,479 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 15 [2021-08-26 05:51:40,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:40,479 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2021-08-26 05:51:40,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 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 05:51:40,479 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2021-08-26 05:51:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-26 05:51:40,480 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:40,480 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:40,506 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 05:51:40,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-08-26 05:51:40,697 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 05:51:40,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:40,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1663317220, now seen corresponding path program 1 times [2021-08-26 05:51:40,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:40,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285008493] [2021-08-26 05:51:40,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:40,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:40,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:40,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411568223] [2021-08-26 05:51:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:40,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:40,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:40,733 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:51:40,764 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 05:51:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:40,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 19 conjunts are in the unsatisfiable core [2021-08-26 05:51:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:41,127 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 05:51:41,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:41,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285008493] [2021-08-26 05:51:41,129 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:41,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411568223] [2021-08-26 05:51:41,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411568223] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:41,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:41,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:51:41,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506798430] [2021-08-26 05:51:41,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:51:41,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:41,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:51:41,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:51:41,134 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:41,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:41,367 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2021-08-26 05:51:41,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-26 05:51:41,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-08-26 05:51:41,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:41,371 INFO L225 Difference]: With dead ends: 100 [2021-08-26 05:51:41,371 INFO L226 Difference]: Without dead ends: 92 [2021-08-26 05:51:41,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 197.4ms TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2021-08-26 05:51:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-26 05:51:41,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2021-08-26 05:51:41,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 79 states have internal predecessors, (95), 0 states have call successors, (0), 0 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 05:51:41,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2021-08-26 05:51:41,390 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 17 [2021-08-26 05:51:41,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:41,391 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2021-08-26 05:51:41,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:41,391 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2021-08-26 05:51:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-26 05:51:41,392 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:41,392 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:41,419 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 05:51:41,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:41,605 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 05:51:41,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 850548497, now seen corresponding path program 1 times [2021-08-26 05:51:41,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:41,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269146947] [2021-08-26 05:51:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:41,606 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:41,626 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:41,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033402608] [2021-08-26 05:51:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:41,626 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:41,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:41,630 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 05:51:41,632 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 05:51:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:41,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-26 05:51:41,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:41,853 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 05:51:41,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:41,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269146947] [2021-08-26 05:51:41,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:41,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033402608] [2021-08-26 05:51:41,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033402608] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:41,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:41,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 05:51:41,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852815042] [2021-08-26 05:51:41,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 05:51:41,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 05:51:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 05:51:41,858 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 05:51:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:41,893 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-08-26 05:51:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 05:51:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-08-26 05:51:41,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:41,899 INFO L225 Difference]: With dead ends: 80 [2021-08-26 05:51:41,899 INFO L226 Difference]: Without dead ends: 78 [2021-08-26 05:51:41,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 05:51:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-26 05:51:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-08-26 05:51:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 72 states have (on average 1.25) internal successors, (90), 77 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 05:51:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 90 transitions. [2021-08-26 05:51:41,905 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 90 transitions. Word has length 20 [2021-08-26 05:51:41,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:41,905 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 90 transitions. [2021-08-26 05:51:41,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 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 05:51:41,906 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 90 transitions. [2021-08-26 05:51:41,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-26 05:51:41,906 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:41,906 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:41,925 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 05:51:42,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:42,107 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:42,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:42,108 INFO L82 PathProgramCache]: Analyzing trace with hash 598788611, now seen corresponding path program 1 times [2021-08-26 05:51:42,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:42,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295887487] [2021-08-26 05:51:42,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:42,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:42,132 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:42,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454727958] [2021-08-26 05:51:42,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:42,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:42,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:42,154 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 05:51:42,185 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 05:51:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:42,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-26 05:51:42,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:51:42,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:42,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295887487] [2021-08-26 05:51:42,523 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:42,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454727958] [2021-08-26 05:51:42,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454727958] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:42,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:42,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-26 05:51:42,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035379731] [2021-08-26 05:51:42,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-26 05:51:42,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-26 05:51:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-26 05:51:42,526 INFO L87 Difference]: Start difference. First operand 78 states and 90 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 05:51:42,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:42,639 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2021-08-26 05:51:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-26 05:51:42,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-08-26 05:51:42,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:42,640 INFO L225 Difference]: With dead ends: 108 [2021-08-26 05:51:42,641 INFO L226 Difference]: Without dead ends: 66 [2021-08-26 05:51:42,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-08-26 05:51:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-26 05:51:42,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2021-08-26 05:51:42,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 58 states have (on average 1.206896551724138) internal successors, (70), 63 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-08-26 05:51:42,646 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 21 [2021-08-26 05:51:42,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:42,647 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-08-26 05:51:42,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 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 05:51:42,647 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-08-26 05:51:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-26 05:51:42,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:42,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:42,679 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 05:51:42,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:42,875 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:42,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:42,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1333477300, now seen corresponding path program 1 times [2021-08-26 05:51:42,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:42,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886056412] [2021-08-26 05:51:42,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:42,876 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:42,913 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:42,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739078737] [2021-08-26 05:51:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:42,920 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:42,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:42,928 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 05:51:42,930 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 05:51:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:43,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 05:51:43,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:43,184 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 05:51:43,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:43,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886056412] [2021-08-26 05:51:43,185 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:43,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739078737] [2021-08-26 05:51:43,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739078737] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:43,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:43,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-26 05:51:43,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049718032] [2021-08-26 05:51:43,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 05:51:43,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 05:51:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-26 05:51:43,187 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:43,330 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-08-26 05:51:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 05:51:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-08-26 05:51:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:43,331 INFO L225 Difference]: With dead ends: 72 [2021-08-26 05:51:43,331 INFO L226 Difference]: Without dead ends: 64 [2021-08-26 05:51:43,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 62.3ms TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-26 05:51:43,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-08-26 05:51:43,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2021-08-26 05:51:43,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 61 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 05:51:43,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2021-08-26 05:51:43,338 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 22 [2021-08-26 05:51:43,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:43,338 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2021-08-26 05:51:43,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 05:51:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2021-08-26 05:51:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-26 05:51:43,339 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 05:51:43,339 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 05:51:43,363 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 05:51:43,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:43,562 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-08-26 05:51:43,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 05:51:43,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1021281049, now seen corresponding path program 1 times [2021-08-26 05:51:43,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 05:51:43,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145295328] [2021-08-26 05:51:43,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:43,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 05:51:43,586 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 05:51:43,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042850180] [2021-08-26 05:51:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 05:51:43,587 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:43,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 05:51:43,588 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 05:51:43,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-26 05:51:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 05:51:43,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-26 05:51:43,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 05:51:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 05:51:43,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 05:51:43,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145295328] [2021-08-26 05:51:43,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 05:51:43,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042850180] [2021-08-26 05:51:43,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042850180] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 05:51:43,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 05:51:43,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-26 05:51:43,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556591130] [2021-08-26 05:51:43,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 05:51:43,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 05:51:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 05:51:43,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 05:51:43,981 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 05:51:44,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 05:51:44,073 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-08-26 05:51:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-26 05:51:44,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 05:51:44,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 05:51:44,073 INFO L225 Difference]: With dead ends: 62 [2021-08-26 05:51:44,073 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 05:51:44,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-08-26 05:51:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 05:51:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 05:51:44,074 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 05:51:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 05:51:44,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-08-26 05:51:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 05:51:44,075 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 05:51:44,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 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 05:51:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 05:51:44,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 05:51:44,077 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,078 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,079 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 05:51:44,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-26 05:51:44,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 05:51:44,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 05:51:44,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 05:51:44,639 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 52) no Hoare annotation was computed. [2021-08-26 05:51:44,640 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,640 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,640 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,640 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,640 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~p~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,641 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,641 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 40 41) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,641 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,641 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~b~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,641 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,641 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,642 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 05:51:44,642 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,642 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 05:51:44,642 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,642 INFO L853 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,642 INFO L857 garLoopResultBuilder]: For program point L11-18(lines 11 14) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L860 garLoopResultBuilder]: At program point L11-20(lines 10 16) the Hoare annotation is: true [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,643 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 13) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:51:44,644 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-08-26 05:51:44,645 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-08-26 05:51:44,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 05:51:44,646 INFO L860 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-08-26 05:51:44,646 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-08-26 05:51:44,646 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-08-26 05:51:44,646 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= ULTIMATE.start_main_~p~0 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))) (<= ULTIMATE.start_main_~a~0 1) (<= ULTIMATE.start_main_~y~0 1) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) [2021-08-26 05:51:44,650 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 05:51:44,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 05:51:44 BoogieIcfgContainer [2021-08-26 05:51:44,667 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 05:51:44,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 05:51:44,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 05:51:44,668 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 05:51:44,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 05:51:38" (3/4) ... [2021-08-26 05:51:44,671 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 05:51:44,681 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-08-26 05:51:44,681 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-26 05:51:44,682 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:51:44,682 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 05:51:44,716 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 05:51:44,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 05:51:44,717 INFO L168 Benchmark]: Toolchain (without parser) took 7039.94 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 53.7 MB in the beginning and 96.5 MB in the end (delta: -42.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,718 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:51:44,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.82 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,718 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.06 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,719 INFO L168 Benchmark]: Boogie Preprocessor took 22.85 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 05:51:44,719 INFO L168 Benchmark]: RCFGBuilder took 402.87 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 35.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,719 INFO L168 Benchmark]: TraceAbstraction took 6274.40 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 34.9 MB in the beginning and 100.7 MB in the end (delta: -65.7 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,719 INFO L168 Benchmark]: Witness Printer took 48.93 ms. Allocated memory is still 161.5 MB. Free memory was 100.7 MB in the beginning and 96.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 05:51:44,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 71.3 MB. Free memory was 52.4 MB in the beginning and 52.3 MB in the end (delta: 43.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 210.82 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 43.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.06 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 54.0 MB in the end (delta: -10.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.85 ms. Allocated memory is still 71.3 MB. Free memory was 54.0 MB in the beginning and 52.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 402.87 ms. Allocated memory is still 71.3 MB. Free memory was 52.6 MB in the beginning and 35.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6274.40 ms. Allocated memory was 71.3 MB in the beginning and 161.5 MB in the end (delta: 90.2 MB). Free memory was 34.9 MB in the beginning and 100.7 MB in the end (delta: -65.7 MB). Peak memory consumption was 61.9 MB. Max. memory is 16.1 GB. * Witness Printer took 48.93 ms. Allocated memory is still 161.5 MB. Free memory was 100.7 MB in the beginning and 96.5 MB in the end (delta: 4.2 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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, 44 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 6185.5ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 14.1ms, AutomataDifference: 1182.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 345.5ms, InitialAbstractionConstructionTime: 11.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 220 SDtfs, 797 SDslu, 265 SDs, 0 SdLazy, 378 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 335.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 916.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=4, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 71.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 38 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 18 NumberOfFragments, 270 HoareAnnotationTreeSize, 9 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 42.4ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 290.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 87.1ms SsaConstructionTime, 172.7ms SatisfiabilityAnalysisTime, 1855.5ms InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 839 SizeOfPredicates, 54 NumberOfNonLiveVariables, 656 ConjunctsInSsa, 99 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 8/8 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((cond == 1 && x <= 1) && 1 <= y) && q == 0) && s == 1) && 1 <= x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && p == 1) && 1 == cond) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && a <= 1) && y <= 1) && b == y - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && p == 1) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && a <= 1) && y <= 1) && b == y - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 1 <= cond) && p == 1) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && a <= 1) && y <= 1) && b == y - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && 1 == cond) && 1 <= b) && q == 0) && r == 0) && s == 1) && b == a) && b == r * y + p * x) && 0 <= x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((cond == 1 && a == x) && x <= 1) && p == 1) && 1 <= y) && q == 0) && r == 0) && s == 1) && 1 <= x) && y <= 1) && b == y - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((((((cond == 1 && 1 <= cond) && p == 1) && 1 <= b) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && a <= 1) && y <= 1) && b == y RESULT: Ultimate proved your program to be correct! [2021-08-26 05:51:44,763 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...