/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 07:03:20,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 07:03:20,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 07:03:20,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 07:03:20,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 07:03:20,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 07:03:20,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 07:03:20,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 07:03:20,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 07:03:20,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 07:03:20,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 07:03:20,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 07:03:20,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 07:03:20,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 07:03:20,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 07:03:20,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 07:03:20,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 07:03:20,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 07:03:20,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 07:03:20,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 07:03:20,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 07:03:20,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 07:03:20,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 07:03:20,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 07:03:20,356 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 07:03:20,356 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 07:03:20,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 07:03:20,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 07:03:20,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 07:03:20,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 07:03:20,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 07:03:20,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 07:03:20,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 07:03:20,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 07:03:20,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 07:03:20,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 07:03:20,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 07:03:20,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 07:03:20,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 07:03:20,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 07:03:20,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 07:03:20,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 07:03:20,398 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 07:03:20,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 07:03:20,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 07:03:20,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 07:03:20,401 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 07:03:20,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 07:03:20,401 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 07:03:20,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 07:03:20,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 07:03:20,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 07:03:20,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 07:03:20,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 07:03:20,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 07:03:20,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 07:03:20,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 07:03:20,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 07:03:20,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 07:03:20,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:03:20,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 07:03:20,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 07:03:20,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 07:03:20,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 07:03:20,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 07:03:20,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 07:03:20,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 07:03:20,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 07:03:20,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 07:03:20,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 07:03:20,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 07:03:20,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 07:03:20,823 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 07:03:20,824 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2020-12-22 07:03:20,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd7d984/1e5c67b96d5045cf90eebb2ee0d9bc56/FLAGa14d0030e [2020-12-22 07:03:21,567 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 07:03:21,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2020-12-22 07:03:21,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd7d984/1e5c67b96d5045cf90eebb2ee0d9bc56/FLAGa14d0030e [2020-12-22 07:03:21,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2abd7d984/1e5c67b96d5045cf90eebb2ee0d9bc56 [2020-12-22 07:03:21,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 07:03:21,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 07:03:21,932 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 07:03:21,932 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 07:03:21,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 07:03:21,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:21" (1/1) ... [2020-12-22 07:03:21,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5c7b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:21, skipping insertion in model container [2020-12-22 07:03:21,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:03:21" (1/1) ... [2020-12-22 07:03:21,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 07:03:21,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 07:03:22,137 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c[528,541] [2020-12-22 07:03:22,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:03:22,154 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 07:03:22,171 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c[528,541] [2020-12-22 07:03:22,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 07:03:22,189 INFO L208 MainTranslator]: Completed translation [2020-12-22 07:03:22,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22 WrapperNode [2020-12-22 07:03:22,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 07:03:22,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 07:03:22,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 07:03:22,192 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 07:03:22,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 07:03:22,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 07:03:22,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 07:03:22,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 07:03:22,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... [2020-12-22 07:03:22,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 07:03:22,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 07:03:22,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 07:03:22,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 07:03:22,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 07:03:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 07:03:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 07:03:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 07:03:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-12-22 07:03:22,350 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-12-22 07:03:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 07:03:22,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 07:03:22,608 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 07:03:22,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:22 BoogieIcfgContainer [2020-12-22 07:03:22,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 07:03:22,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 07:03:22,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 07:03:22,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 07:03:22,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:03:21" (1/3) ... [2020-12-22 07:03:22,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd92157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:22, skipping insertion in model container [2020-12-22 07:03:22,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:03:22" (2/3) ... [2020-12-22 07:03:22,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd92157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:03:22, skipping insertion in model container [2020-12-22 07:03:22,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:22" (3/3) ... [2020-12-22 07:03:22,621 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-12-22 07:03:22,631 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 07:03:22,637 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 07:03:22,681 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 07:03:22,745 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 07:03:22,745 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 07:03:22,746 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 07:03:22,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 07:03:22,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 07:03:22,749 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 07:03:22,749 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 07:03:22,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 07:03:22,776 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-22 07:03:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 07:03:22,786 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:22,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:22,788 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:22,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1972897208, now seen corresponding path program 1 times [2020-12-22 07:03:22,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:22,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587294266] [2020-12-22 07:03:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 07:03:23,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587294266] [2020-12-22 07:03:23,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:03:23,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:03:23,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810445032] [2020-12-22 07:03:23,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:03:23,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:23,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:03:23,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:23,103 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2020-12-22 07:03:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:23,161 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-12-22 07:03:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:03:23,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-22 07:03:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:23,173 INFO L225 Difference]: With dead ends: 29 [2020-12-22 07:03:23,174 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 07:03:23,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 07:03:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 07:03:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 07:03:23,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-22 07:03:23,224 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-12-22 07:03:23,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:23,225 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-22 07:03:23,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:03:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-22 07:03:23,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 07:03:23,228 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:23,228 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:23,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 07:03:23,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:23,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1641441273, now seen corresponding path program 1 times [2020-12-22 07:03:23,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:23,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875637859] [2020-12-22 07:03:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:23,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:03:23,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875637859] [2020-12-22 07:03:23,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:03:23,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:03:23,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820638714] [2020-12-22 07:03:23,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:03:23,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:23,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:03:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:23,398 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-12-22 07:03:23,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:23,422 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-12-22 07:03:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:03:23,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-22 07:03:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:23,424 INFO L225 Difference]: With dead ends: 28 [2020-12-22 07:03:23,424 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 07:03:23,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 07:03:23,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-12-22 07:03:23,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 07:03:23,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-22 07:03:23,432 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2020-12-22 07:03:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:23,432 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-22 07:03:23,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:03:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-22 07:03:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 07:03:23,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:23,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:23,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 07:03:23,434 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:23,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1670070424, now seen corresponding path program 1 times [2020-12-22 07:03:23,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:23,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778761964] [2020-12-22 07:03:23,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:03:23,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778761964] [2020-12-22 07:03:23,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007369912] [2020-12-22 07:03:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 07:03:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:23,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 07:03:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 07:03:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-22 07:03:23,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 07:03:23,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-12-22 07:03:23,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314666673] [2020-12-22 07:03:23,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 07:03:23,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:23,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 07:03:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 07:03:23,917 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-12-22 07:03:24,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:24,014 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-12-22 07:03:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 07:03:24,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-22 07:03:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:24,016 INFO L225 Difference]: With dead ends: 24 [2020-12-22 07:03:24,016 INFO L226 Difference]: Without dead ends: 20 [2020-12-22 07:03:24,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-22 07:03:24,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-22 07:03:24,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-22 07:03:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-22 07:03:24,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-22 07:03:24,023 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-12-22 07:03:24,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:24,024 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-22 07:03:24,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 07:03:24,024 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-22 07:03:24,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 07:03:24,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 07:03:24,026 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 07:03:24,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 07:03:24,229 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 07:03:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 07:03:24,231 INFO L82 PathProgramCache]: Analyzing trace with hash -755943847, now seen corresponding path program 1 times [2020-12-22 07:03:24,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 07:03:24,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593685265] [2020-12-22 07:03:24,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 07:03:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:24,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:24,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-12-22 07:03:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 07:03:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-12-22 07:03:24,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593685265] [2020-12-22 07:03:24,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 07:03:24,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 07:03:24,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975841363] [2020-12-22 07:03:24,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 07:03:24,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 07:03:24,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 07:03:24,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:24,346 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-12-22 07:03:24,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 07:03:24,362 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-12-22 07:03:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 07:03:24,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-12-22 07:03:24,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 07:03:24,363 INFO L225 Difference]: With dead ends: 20 [2020-12-22 07:03:24,364 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 07:03:24,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 07:03:24,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 07:03:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 07:03:24,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 07:03:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 07:03:24,369 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-12-22 07:03:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 07:03:24,369 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 07:03:24,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 07:03:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 07:03:24,369 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 07:03:24,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 07:03:24,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 07:03:24,389 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 07:03:24,389 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 07:03:24,389 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 07:03:24,389 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 07:03:24,390 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 07:03:24,390 INFO L189 CegarLoopUtils]: For program point L17(line 17) no Hoare annotation was computed. [2020-12-22 07:03:24,390 INFO L189 CegarLoopUtils]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-12-22 07:03:24,390 INFO L192 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: true [2020-12-22 07:03:24,390 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-22 07:03:24,391 INFO L189 CegarLoopUtils]: For program point L13(lines 13 19) no Hoare annotation was computed. [2020-12-22 07:03:24,391 INFO L189 CegarLoopUtils]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-12-22 07:03:24,391 INFO L189 CegarLoopUtils]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-12-22 07:03:24,391 INFO L189 CegarLoopUtils]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-22 07:03:24,391 INFO L192 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: true [2020-12-22 07:03:24,391 INFO L192 CegarLoopUtils]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-12-22 07:03:24,392 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-22 07:03:24,392 INFO L189 CegarLoopUtils]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-12-22 07:03:24,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:03:24 BoogieIcfgContainer [2020-12-22 07:03:24,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 07:03:24,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 07:03:24,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 07:03:24,399 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 07:03:24,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:03:22" (3/4) ... [2020-12-22 07:03:24,404 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 07:03:24,411 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-12-22 07:03:24,416 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 07:03:24,416 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 07:03:24,416 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 07:03:24,417 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 07:03:24,458 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive-simple/id_b3_o5-2.c-witness.graphml [2020-12-22 07:03:24,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 07:03:24,460 INFO L168 Benchmark]: Toolchain (without parser) took 2529.35 ms. Allocated memory is still 162.5 MB. Free memory was 137.6 MB in the beginning and 71.9 MB in the end (delta: 65.7 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,461 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 07:03:24,461 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.85 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 128.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,462 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,463 INFO L168 Benchmark]: Boogie Preprocessor took 20.77 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.9 MB in the end (delta: 923.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,464 INFO L168 Benchmark]: RCFGBuilder took 358.33 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 114.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,464 INFO L168 Benchmark]: TraceAbstraction took 1786.29 ms. Allocated memory is still 162.5 MB. Free memory was 113.7 MB in the beginning and 74.0 MB in the end (delta: 39.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,465 INFO L168 Benchmark]: Witness Printer took 59.21 ms. Allocated memory is still 162.5 MB. Free memory was 74.0 MB in the beginning and 71.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 07:03:24,469 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 135.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.85 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 128.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 162.5 MB. Free memory was 128.1 MB in the beginning and 126.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 20.77 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.9 MB in the end (delta: 923.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 358.33 ms. Allocated memory is still 162.5 MB. Free memory was 125.9 MB in the beginning and 114.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1786.29 ms. Allocated memory is still 162.5 MB. Free memory was 113.7 MB in the beginning and 74.0 MB in the end (delta: 39.7 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. * Witness Printer took 59.21 ms. Allocated memory is still 162.5 MB. Free memory was 74.0 MB in the beginning and 71.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 7 SDslu, 196 SDs, 0 SdLazy, 56 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 1 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 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 correct! Received shutdown request...