./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8d31f386 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/ldv-regression/test_while_int.i -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 c7eba07debb0aad75be3d6c81175278352db792c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-wip.dd.multireach-323-8d31f38 [2021-07-05 01:00:56,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-05 01:00:56,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-05 01:00:56,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-05 01:00:56,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-05 01:00:56,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-05 01:00:56,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-05 01:00:56,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-05 01:00:56,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-05 01:00:56,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-05 01:00:56,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-05 01:00:56,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-05 01:00:56,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-05 01:00:56,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-05 01:00:56,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-05 01:00:56,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-05 01:00:56,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-05 01:00:56,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-05 01:00:56,260 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-05 01:00:56,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-05 01:00:56,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-05 01:00:56,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-05 01:00:56,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-05 01:00:56,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-05 01:00:56,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-05 01:00:56,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-05 01:00:56,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-05 01:00:56,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-05 01:00:56,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-05 01:00:56,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-05 01:00:56,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-05 01:00:56,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-05 01:00:56,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-05 01:00:56,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-05 01:00:56,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-05 01:00:56,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-05 01:00:56,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-05 01:00:56,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-05 01:00:56,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-05 01:00:56,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-05 01:00:56,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-05 01:00:56,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-07-05 01:00:56,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-05 01:00:56,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-05 01:00:56,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-05 01:00:56,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-05 01:00:56,321 INFO L138 SettingsManager]: * Use SBE=true [2021-07-05 01:00:56,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-05 01:00:56,321 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-05 01:00:56,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-05 01:00:56,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-05 01:00:56,322 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-05 01:00:56,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-05 01:00:56,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-05 01:00:56,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-05 01:00:56,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-05 01:00:56,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:56,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-05 01:00:56,324 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-05 01:00:56,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7eba07debb0aad75be3d6c81175278352db792c [2021-07-05 01:00:56,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-05 01:00:56,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-05 01:00:56,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-05 01:00:56,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-05 01:00:56,610 INFO L275 PluginConnector]: CDTParser initialized [2021-07-05 01:00:56,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.i [2021-07-05 01:00:56,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9bbe66be/0f55b4fcd2cb4d73bfec1dc713a4e42b/FLAGe76b3fb46 [2021-07-05 01:00:57,038 INFO L306 CDTParser]: Found 1 translation units. [2021-07-05 01:00:57,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i [2021-07-05 01:00:57,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9bbe66be/0f55b4fcd2cb4d73bfec1dc713a4e42b/FLAGe76b3fb46 [2021-07-05 01:00:57,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9bbe66be/0f55b4fcd2cb4d73bfec1dc713a4e42b [2021-07-05 01:00:57,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-05 01:00:57,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-05 01:00:57,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:57,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-05 01:00:57,062 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-05 01:00:57,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4533086b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57, skipping insertion in model container [2021-07-05 01:00:57,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-05 01:00:57,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-05 01:00:57,178 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2021-07-05 01:00:57,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:57,201 INFO L203 MainTranslator]: Completed pre-run [2021-07-05 01:00:57,248 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.i[296,309] [2021-07-05 01:00:57,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-05 01:00:57,259 INFO L208 MainTranslator]: Completed translation [2021-07-05 01:00:57,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57 WrapperNode [2021-07-05 01:00:57,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-05 01:00:57,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:57,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-05 01:00:57,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-05 01:00:57,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-05 01:00:57,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-05 01:00:57,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-05 01:00:57,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-05 01:00:57,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,286 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-05 01:00:57,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-05 01:00:57,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-05 01:00:57,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-05 01:00:57,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (1/1) ... [2021-07-05 01:00:57,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-05 01:00:57,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 01:00:57,320 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) [2021-07-05 01:00:57,342 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 [2021-07-05 01:00:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-05 01:00:57,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-05 01:00:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-05 01:00:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-05 01:00:57,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-05 01:00:57,497 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-07-05 01:00:57,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:57 BoogieIcfgContainer [2021-07-05 01:00:57,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-05 01:00:57,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-05 01:00:57,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-05 01:00:57,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-05 01:00:57,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.07 01:00:57" (1/3) ... [2021-07-05 01:00:57,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a418ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:57, skipping insertion in model container [2021-07-05 01:00:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.07 01:00:57" (2/3) ... [2021-07-05 01:00:57,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a418ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.07 01:00:57, skipping insertion in model container [2021-07-05 01:00:57,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:57" (3/3) ... [2021-07-05 01:00:57,503 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.i [2021-07-05 01:00:57,507 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-05 01:00:57,507 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-05 01:00:57,533 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2021-07-05 01:00:57,536 INFO L329 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, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-05 01:00:57,537 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-05 01:00:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) [2021-07-05 01:00:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-07-05 01:00:57,553 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:57,553 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-07-05 01:00:57,553 INFO L374 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:57,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2021-07-05 01:00:57,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:57,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895369725] [2021-07-05 01:00:57,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:57,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:57,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:57,646 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,647 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:57,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 01:00:57,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:57,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895369725] [2021-07-05 01:00:57,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895369725] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-05 01:00:57,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-05 01:00:57,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-05 01:00:57,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049026966] [2021-07-05 01:00:57,664 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-05 01:00:57,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:57,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-05 01:00:57,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 01:00:57,674 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-07-05 01:00:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:57,695 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-07-05 01:00:57,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-05 01:00:57,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-07-05 01:00:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:57,700 INFO L225 Difference]: With dead ends: 20 [2021-07-05 01:00:57,701 INFO L226 Difference]: Without dead ends: 8 [2021-07-05 01:00:57,702 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-05 01:00:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-07-05 01:00:57,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-07-05 01:00:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-07-05 01:00:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-07-05 01:00:57,718 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2021-07-05 01:00:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:57,718 INFO L442 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-07-05 01:00:57,718 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-07-05 01:00:57,719 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-07-05 01:00:57,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-05 01:00:57,719 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:57,719 INFO L525 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-07-05 01:00:57,719 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-05 01:00:57,720 INFO L374 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:57,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:57,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1810655527, now seen corresponding path program 1 times [2021-07-05 01:00:57,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:57,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173566336] [2021-07-05 01:00:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:57,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:57,745 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,746 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,750 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-07-05 01:00:57,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 01:00:57,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-05 01:00:57,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173566336] [2021-07-05 01:00:57,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173566336] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 01:00:57,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978452815] [2021-07-05 01:00:57,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:57,760 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 01:00:57,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-05 01:00:57,761 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) [2021-07-05 01:00:57,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-07-05 01:00:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-05 01:00:57,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-05 01:00:57,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-05 01:00:57,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,820 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,821 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,821 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,822 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,822 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,823 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,823 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,824 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,824 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,830 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 01:00:57,839 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 01:00:57,840 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,841 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 01:00:57,842 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,844 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-05 01:00:57,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,854 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,855 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,856 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,857 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,859 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,862 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-05 01:00:57,862 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-07-05 01:00:57,870 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-05 01:00:57,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-07-05 01:00:57,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,878 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,878 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,879 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-05 01:00:57,885 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-07-05 01:00:57,886 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,886 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,887 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,887 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,888 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-05 01:00:57,888 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-05 01:00:57,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-05 01:00:57,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978452815] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-05 01:00:57,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-05 01:00:57,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-05 01:00:57,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059200622] [2021-07-05 01:00:57,890 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-05 01:00:57,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-05 01:00:57,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-05 01:00:57,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-07-05 01:00:57,893 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:57,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-05 01:00:57,920 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-07-05 01:00:57,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-05 01:00:57,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-07-05 01:00:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-05 01:00:57,921 INFO L225 Difference]: With dead ends: 13 [2021-07-05 01:00:57,921 INFO L226 Difference]: Without dead ends: 11 [2021-07-05 01:00:57,922 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.2ms TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-07-05 01:00:57,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-07-05 01:00:57,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-07-05 01:00:57,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-07-05 01:00:57,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-07-05 01:00:57,924 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-07-05 01:00:57,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-05 01:00:57,925 INFO L442 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-07-05 01:00:57,925 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-05 01:00:57,925 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-07-05 01:00:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-05 01:00:57,925 INFO L517 BasicCegarLoop]: Found error trace [2021-07-05 01:00:57,926 INFO L525 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2021-07-05 01:00:57,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-07-05 01:00:58,141 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-05 01:00:58,142 INFO L374 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-07-05 01:00:58,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-05 01:00:58,145 INFO L82 PathProgramCache]: Analyzing trace with hash 578140772, now seen corresponding path program 2 times [2021-07-05 01:00:58,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-05 01:00:58,146 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380940897] [2021-07-05 01:00:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-05 01:00:58,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-05 01:00:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 01:00:58,170 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 01:00:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-05 01:00:58,181 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-05 01:00:58,190 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-05 01:00:58,191 INFO L639 BasicCegarLoop]: Counterexample is feasible [2021-07-05 01:00:58,193 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-05 01:00:58,193 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-05 01:00:58,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.07 01:00:58 BoogieIcfgContainer [2021-07-05 01:00:58,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-05 01:00:58,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-05 01:00:58,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-05 01:00:58,219 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-05 01:00:58,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.07 01:00:57" (3/4) ... [2021-07-05 01:00:58,220 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-07-05 01:00:58,260 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-05 01:00:58,260 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-05 01:00:58,261 INFO L168 Benchmark]: Toolchain (without parser) took 1203.68 ms. Allocated memory was 52.4 MB in the beginning and 96.5 MB in the end (delta: 44.0 MB). Free memory was 27.2 MB in the beginning and 76.8 MB in the end (delta: -49.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,261 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 32.6 MB in the beginning and 32.5 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:58,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.45 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 26.9 MB in the beginning and 56.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 54.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,262 INFO L168 Benchmark]: Boogie Preprocessor took 15.55 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-05 01:00:58,262 INFO L168 Benchmark]: RCFGBuilder took 202.81 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 43.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,263 INFO L168 Benchmark]: TraceAbstraction took 718.69 ms. Allocated memory is still 73.4 MB. Free memory was 42.9 MB in the beginning and 33.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,263 INFO L168 Benchmark]: Witness Printer took 41.88 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 33.0 MB in the beginning and 76.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-05 01:00:58,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 52.4 MB. Free memory was 32.6 MB in the beginning and 32.5 MB in the end (delta: 37.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 200.45 ms. Allocated memory was 52.4 MB in the beginning and 73.4 MB in the end (delta: 21.0 MB). Free memory was 26.9 MB in the beginning and 56.3 MB in the end (delta: -29.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 73.4 MB. Free memory was 56.1 MB in the beginning and 54.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.55 ms. Allocated memory is still 73.4 MB. Free memory was 54.8 MB in the beginning and 53.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 202.81 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 43.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 718.69 ms. Allocated memory is still 73.4 MB. Free memory was 42.9 MB in the beginning and 33.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 41.88 ms. Allocated memory was 73.4 MB in the beginning and 96.5 MB in the end (delta: 23.1 MB). Free memory was 33.0 MB in the beginning and 76.8 MB in the end (delta: -43.9 MB). Peak memory consumption was 4.2 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int i=0; [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L26] COND TRUE i<5 [L27] i++ [L20] (b) ? (0) : __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 664.4ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 5.7ms, AutomataDifference: 68.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 9 SDslu, 21 SDs, 0 SdLazy, 22 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 34.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.0ms SsaConstructionTime, 61.7ms SatisfiabilityAnalysisTime, 146.2ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 2 NumberOfNonLiveVariables, 51 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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! [2021-07-05 01:00:58,286 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...