./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/xcsp/AllInterval-006.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/xcsp/AllInterval-006.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 50c5e818ba05d4e8fa241dc9220a809d016175eb .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 11:34:40,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 11:34:40,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 11:34:40,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 11:34:40,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 11:34:40,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 11:34:40,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 11:34:40,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 11:34:40,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 11:34:40,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 11:34:40,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 11:34:40,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 11:34:40,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 11:34:40,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 11:34:40,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 11:34:40,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 11:34:40,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 11:34:40,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 11:34:40,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 11:34:40,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 11:34:40,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 11:34:40,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 11:34:40,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 11:34:40,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 11:34:40,863 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 11:34:40,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 11:34:40,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 11:34:40,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 11:34:40,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 11:34:40,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 11:34:40,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 11:34:40,867 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 11:34:40,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 11:34:40,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 11:34:40,869 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 11:34:40,869 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 11:34:40,870 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 11:34:40,870 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 11:34:40,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 11:34:40,871 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 11:34:40,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 11:34:40,872 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 11:34:40,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 11:34:40,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 11:34:40,907 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 11:34:40,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 11:34:40,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 11:34:40,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 11:34:40,909 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 11:34:40,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 11:34:40,910 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 11:34:40,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 11:34:40,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 11:34:40,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 11:34:40,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 11:34:40,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 11:34:40,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 11:34:40,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 11:34:40,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 11:34:40,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 11:34:40,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 11:34:40,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 11:34:40,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 11:34:40,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 11:34:40,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 11:34:40,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50c5e818ba05d4e8fa241dc9220a809d016175eb [2021-08-26 11:34:41,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 11:34:41,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 11:34:41,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 11:34:41,284 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 11:34:41,285 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 11:34:41,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/xcsp/AllInterval-006.c [2021-08-26 11:34:41,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531ea184a/1ae559a014aa420b97e76ad8df0a670c/FLAGb7b24d69b [2021-08-26 11:34:41,829 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 11:34:41,829 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/xcsp/AllInterval-006.c [2021-08-26 11:34:41,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531ea184a/1ae559a014aa420b97e76ad8df0a670c/FLAGb7b24d69b [2021-08-26 11:34:42,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531ea184a/1ae559a014aa420b97e76ad8df0a670c [2021-08-26 11:34:42,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 11:34:42,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 11:34:42,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 11:34:42,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 11:34:42,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 11:34:42,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a968c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42, skipping insertion in model container [2021-08-26 11:34:42,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 11:34:42,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 11:34:42,434 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/xcsp/AllInterval-006.c[3098,3111] [2021-08-26 11:34:42,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 11:34:42,452 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 11:34:42,530 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/xcsp/AllInterval-006.c[3098,3111] [2021-08-26 11:34:42,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 11:34:42,548 INFO L208 MainTranslator]: Completed translation [2021-08-26 11:34:42,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42 WrapperNode [2021-08-26 11:34:42,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 11:34:42,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 11:34:42,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 11:34:42,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 11:34:42,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 11:34:42,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 11:34:42,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 11:34:42,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 11:34:42,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 11:34:42,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 11:34:42,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 11:34:42,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 11:34:42,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (1/1) ... [2021-08-26 11:34:42,689 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 11:34:42,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 11:34:42,710 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 11:34:42,736 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 11:34:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 11:34:42,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 11:34:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 11:34:42,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 11:34:43,374 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 11:34:43,375 INFO L299 CfgBuilder]: Removed 108 assume(true) statements. [2021-08-26 11:34:43,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:34:43 BoogieIcfgContainer [2021-08-26 11:34:43,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 11:34:43,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 11:34:43,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 11:34:43,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 11:34:43,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:34:42" (1/3) ... [2021-08-26 11:34:43,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58768c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:34:43, skipping insertion in model container [2021-08-26 11:34:43,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:34:42" (2/3) ... [2021-08-26 11:34:43,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58768c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:34:43, skipping insertion in model container [2021-08-26 11:34:43,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:34:43" (3/3) ... [2021-08-26 11:34:43,384 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-006.c [2021-08-26 11:34:43,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 11:34:43,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 11:34:43,428 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 11:34:43,433 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 11:34:43,434 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 11:34:43,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 120 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 119 states have internal predecessors, (176), 0 states have call successors, (0), 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 11:34:43,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-26 11:34:43,458 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 11:34:43,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 11:34:43,459 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 11:34:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 11:34:43,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1389823289, now seen corresponding path program 1 times [2021-08-26 11:34:43,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 11:34:43,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248611137] [2021-08-26 11:34:43,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 11:34:43,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 11:34:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 11:34:43,665 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 11:34:43,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 11:34:43,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248611137] [2021-08-26 11:34:43,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248611137] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 11:34:43,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 11:34:43,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 11:34:43,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483180982] [2021-08-26 11:34:43,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 11:34:43,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 11:34:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 11:34:43,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 11:34:43,696 INFO L87 Difference]: Start difference. First operand has 120 states, 118 states have (on average 1.4915254237288136) internal successors, (176), 119 states have internal predecessors, (176), 0 states have call successors, (0), 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 58.0) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:34:43,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 11:34:43,718 INFO L93 Difference]: Finished difference Result 234 states and 346 transitions. [2021-08-26 11:34:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 11:34:43,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-08-26 11:34:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 11:34:43,731 INFO L225 Difference]: With dead ends: 234 [2021-08-26 11:34:43,731 INFO L226 Difference]: Without dead ends: 117 [2021-08-26 11:34:43,734 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 11:34:43,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-08-26 11:34:43,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2021-08-26 11:34:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.043103448275862) internal successors, (121), 116 states have internal predecessors, (121), 0 states have call successors, (0), 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 11:34:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 121 transitions. [2021-08-26 11:34:43,761 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 121 transitions. Word has length 116 [2021-08-26 11:34:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 11:34:43,762 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 121 transitions. [2021-08-26 11:34:43,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.0) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:34:43,762 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 121 transitions. [2021-08-26 11:34:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-26 11:34:43,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 11:34:43,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 11:34:43,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 11:34:43,766 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 11:34:43,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 11:34:43,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1985819869, now seen corresponding path program 1 times [2021-08-26 11:34:43,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 11:34:43,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065665781] [2021-08-26 11:34:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 11:34:43,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 11:34:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 11:34:47,300 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 11:34:47,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 11:34:47,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065665781] [2021-08-26 11:34:47,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065665781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 11:34:47,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 11:34:47,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2021-08-26 11:34:47,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68475138] [2021-08-26 11:34:47,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-08-26 11:34:47,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 11:34:47,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-08-26 11:34:47,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1007, Unknown=0, NotChecked=0, Total=1122 [2021-08-26 11:34:47,305 INFO L87 Difference]: Start difference. First operand 117 states and 121 transitions. Second operand has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:34:53,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 11:34:53,915 INFO L93 Difference]: Finished difference Result 163 states and 169 transitions. [2021-08-26 11:34:53,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-26 11:34:53,916 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-08-26 11:34:53,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 11:34:53,918 INFO L225 Difference]: With dead ends: 163 [2021-08-26 11:34:53,918 INFO L226 Difference]: Without dead ends: 159 [2021-08-26 11:34:53,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 6933.4ms TimeCoverageRelationStatistics Valid=1207, Invalid=3215, Unknown=0, NotChecked=0, Total=4422 [2021-08-26 11:34:53,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-08-26 11:34:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 129. [2021-08-26 11:34:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0546875) internal successors, (135), 128 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:34:53,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 135 transitions. [2021-08-26 11:34:53,941 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 135 transitions. Word has length 116 [2021-08-26 11:34:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 11:34:53,942 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 135 transitions. [2021-08-26 11:34:53,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.411764705882353) internal successors, (116), 34 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:34:53,943 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 135 transitions. [2021-08-26 11:34:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-26 11:34:53,945 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 11:34:53,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 11:34:53,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 11:34:53,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 11:34:53,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 11:34:53,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1985879451, now seen corresponding path program 1 times [2021-08-26 11:34:53,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 11:34:53,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297252101] [2021-08-26 11:34:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 11:34:53,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 11:34:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 11:34:56,999 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 11:34:56,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 11:34:56,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297252101] [2021-08-26 11:34:57,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297252101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 11:34:57,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 11:34:57,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2021-08-26 11:34:57,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289138393] [2021-08-26 11:34:57,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-26 11:34:57,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 11:34:57,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-26 11:34:57,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=767, Unknown=0, NotChecked=0, Total=870 [2021-08-26 11:34:57,003 INFO L87 Difference]: Start difference. First operand 129 states and 135 transitions. Second operand has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:35:03,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 11:35:03,842 INFO L93 Difference]: Finished difference Result 160 states and 166 transitions. [2021-08-26 11:35:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-26 11:35:03,843 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2021-08-26 11:35:03,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 11:35:03,845 INFO L225 Difference]: With dead ends: 160 [2021-08-26 11:35:03,845 INFO L226 Difference]: Without dead ends: 152 [2021-08-26 11:35:03,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 7352.5ms TimeCoverageRelationStatistics Valid=952, Invalid=2470, Unknown=0, NotChecked=0, Total=3422 [2021-08-26 11:35:03,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-08-26 11:35:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2021-08-26 11:35:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0483870967741935) internal successors, (130), 124 states have internal predecessors, (130), 0 states have call successors, (0), 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 11:35:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2021-08-26 11:35:03,853 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 116 [2021-08-26 11:35:03,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 11:35:03,853 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2021-08-26 11:35:03,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 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 11:35:03,854 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2021-08-26 11:35:03,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-08-26 11:35:03,855 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 11:35:03,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 11:35:03,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 11:35:03,856 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 11:35:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 11:35:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1176473243, now seen corresponding path program 1 times [2021-08-26 11:35:03,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 11:35:03,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091855908] [2021-08-26 11:35:03,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 11:35:03,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 11:35:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 11:35:04,039 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 11:35:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 11:35:04,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 11:35:04,294 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 11:35:04,295 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 11:35:04,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 11:35:04,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 11:35:04,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:35:04 BoogieIcfgContainer [2021-08-26 11:35:04,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 11:35:04,372 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 11:35:04,372 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 11:35:04,372 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 11:35:04,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:34:43" (3/4) ... [2021-08-26 11:35:04,374 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 11:35:04,447 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 11:35:04,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 11:35:04,449 INFO L168 Benchmark]: Toolchain (without parser) took 22200.70 ms. Allocated memory was 56.6 MB in the beginning and 163.6 MB in the end (delta: 107.0 MB). Free memory was 35.3 MB in the beginning and 52.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 88.9 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,450 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 11:35:04,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.39 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 39.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.29 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,451 INFO L168 Benchmark]: Boogie Preprocessor took 56.78 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 34.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,451 INFO L168 Benchmark]: RCFGBuilder took 697.49 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 34.6 MB in the beginning and 53.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,451 INFO L168 Benchmark]: TraceAbstraction took 20992.50 ms. Allocated memory was 75.5 MB in the beginning and 163.6 MB in the end (delta: 88.1 MB). Free memory was 52.8 MB in the beginning and 59.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,452 INFO L168 Benchmark]: Witness Printer took 76.09 ms. Allocated memory is still 163.6 MB. Free memory was 59.3 MB in the beginning and 52.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-26 11:35:04,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.9 MB in the end (delta: 42.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.39 ms. Allocated memory is still 56.6 MB. Free memory was 35.2 MB in the beginning and 39.4 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.29 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 36.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.78 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 34.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 697.49 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 34.6 MB in the beginning and 53.3 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20992.50 ms. Allocated memory was 75.5 MB in the beginning and 163.6 MB in the end (delta: 88.1 MB). Free memory was 52.8 MB in the beginning and 59.3 MB in the end (delta: -6.5 MB). Peak memory consumption was 97.9 MB. Max. memory is 16.1 GB. * Witness Printer took 76.09 ms. Allocated memory is still 163.6 MB. Free memory was 59.3 MB in the beginning and 52.0 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 113]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int cond0; [L25] int dummy = 0; [L26] int N; [L27] int var0; [L28] var0 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L31] int var1; [L32] var1 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L35] int var2; [L36] var2 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L39] int var3; [L40] var3 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L43] int var4; [L44] var4 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L47] int var5; [L48] var5 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L51] int var6; [L52] var6 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L55] int var7; [L56] var7 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L59] int var8; [L60] var8 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L63] int var9; [L64] var9 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L67] int var10; [L68] var10 = __VERIFIER_nondet_int() [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L71] int myvar0 = 1; [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L20] COND FALSE !(!cond) [L97] int var_for_abs; [L98] var_for_abs = var0 - var1 [L99] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L99] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L101] var_for_abs = var1 - var2 [L102] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L102] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L104] var_for_abs = var2 - var3 [L105] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L105] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L107] var_for_abs = var3 - var4 [L108] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L108] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L110] var_for_abs = var4 - var5 [L111] EXPR (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L111] var_for_abs = (var_for_abs >= 0) ? var_for_abs : var_for_abs * (-1) [L20] COND FALSE !(!cond) [L113] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 120 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20874.1ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 18.6ms, AutomataDifference: 13520.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 260 SDtfs, 2377 SDslu, 1113 SDs, 0 SdLazy, 2238 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1581.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 14286.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred in iteration=2, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 57 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.2ms SsaConstructionTime, 888.0ms SatisfiabilityAnalysisTime, 5975.6ms InterpolantComputationTime, 464 NumberOfCodeBlocks, 464 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 345 ConstructedInterpolants, 0 QuantifiedInterpolants, 13788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 11:35:04,484 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...