/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:15:59,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:15:59,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:15:59,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:15:59,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:15:59,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:15:59,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:15:59,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:15:59,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:15:59,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:15:59,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:15:59,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:15:59,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:15:59,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:15:59,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:15:59,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:15:59,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:15:59,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:15:59,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:15:59,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:15:59,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:15:59,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:15:59,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:15:59,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:15:59,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 18:15:59,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:15:59,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:15:59,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:15:59,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:16:00,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:16:00,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:16:00,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:16:00,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:16:00,042 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:16:00,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:16:00,043 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:16:00,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:16:00,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:16:00,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:16:00,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:16:00,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:16:00,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:16:00,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:16:00,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:16:00,046 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:16:00,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:16:00,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:16:00,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:16:00,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:16:00,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:16:00,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:16:00,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:16:00,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:16:00,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:16:00,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:16:00,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:16:00,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:16:00,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:16:00,056 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:16:00,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:16:00,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:16:00,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:16:00,465 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:16:00,466 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:16:00,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-10-23 18:16:00,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4949af483/6fe2f96d93094474bf7347c6190513ea/FLAG7ccb23d0a [2020-10-23 18:16:01,223 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:16:01,224 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-10-23 18:16:01,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4949af483/6fe2f96d93094474bf7347c6190513ea/FLAG7ccb23d0a [2020-10-23 18:16:01,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4949af483/6fe2f96d93094474bf7347c6190513ea [2020-10-23 18:16:01,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:16:01,257 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:16:01,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:16:01,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:16:01,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:16:01,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123c366e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01, skipping insertion in model container [2020-10-23 18:16:01,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:16:01,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:16:01,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:16:01,445 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:16:01,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:16:01,486 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:16:01,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01 WrapperNode [2020-10-23 18:16:01,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:16:01,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:16:01,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:16:01,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:16:01,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (1/1) ... [2020-10-23 18:16:01,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:16:01,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:16:01,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:16:01,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:16:01,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (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 [2020-10-23 18:16:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:16:01,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:16:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:16:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-10-23 18:16:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:16:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:16:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:16:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:16:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:16:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:16:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-10-23 18:16:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:16:01,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:16:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:16:01,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:16:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:16:01,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:16:01,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:16:02,101 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:16:02,101 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:16:02,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:16:02 BoogieIcfgContainer [2020-10-23 18:16:02,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:16:02,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:16:02,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:16:02,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:16:02,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:16:01" (1/3) ... [2020-10-23 18:16:02,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d0011f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:16:02, skipping insertion in model container [2020-10-23 18:16:02,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:16:01" (2/3) ... [2020-10-23 18:16:02,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d0011f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:16:02, skipping insertion in model container [2020-10-23 18:16:02,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:16:02" (3/3) ... [2020-10-23 18:16:02,122 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-10-23 18:16:02,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:16:02,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:16:02,194 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:16:02,243 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:16:02,243 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:16:02,244 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:16:02,244 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:16:02,244 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:16:02,244 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:16:02,244 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:16:02,244 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:16:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-23 18:16:02,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-23 18:16:02,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:16:02,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:16:02,270 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:16:02,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:16:02,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1397195593, now seen corresponding path program 1 times [2020-10-23 18:16:02,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:16:02,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315376779] [2020-10-23 18:16:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:16:02,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:16:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:02,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:16:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:16:02,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315376779] [2020-10-23 18:16:02,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:16:02,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:16:02,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755048475] [2020-10-23 18:16:02,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:16:02,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:16:02,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:16:02,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:16:02,667 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 6 states. [2020-10-23 18:16:02,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:16:02,896 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-23 18:16:02,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:16:02,898 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-23 18:16:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:16:02,908 INFO L225 Difference]: With dead ends: 39 [2020-10-23 18:16:02,908 INFO L226 Difference]: Without dead ends: 21 [2020-10-23 18:16:02,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:16:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-23 18:16:02,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-23 18:16:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-23 18:16:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-10-23 18:16:02,960 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 15 [2020-10-23 18:16:02,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:16:02,960 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-10-23 18:16:02,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:16:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-10-23 18:16:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:16:02,963 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:16:02,963 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:16:02,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:16:02,963 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:16:02,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:16:02,965 INFO L82 PathProgramCache]: Analyzing trace with hash -630540429, now seen corresponding path program 1 times [2020-10-23 18:16:02,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:16:02,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927928406] [2020-10-23 18:16:02,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:16:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:16:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:16:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 18:16:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 18:16:03,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927928406] [2020-10-23 18:16:03,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:16:03,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:16:03,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917739105] [2020-10-23 18:16:03,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:16:03,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:16:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:16:03,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:16:03,140 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 6 states. [2020-10-23 18:16:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:16:03,348 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-23 18:16:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:16:03,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-23 18:16:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:16:03,373 INFO L225 Difference]: With dead ends: 34 [2020-10-23 18:16:03,373 INFO L226 Difference]: Without dead ends: 25 [2020-10-23 18:16:03,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:16:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-23 18:16:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-10-23 18:16:03,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-23 18:16:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-23 18:16:03,395 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 22 [2020-10-23 18:16:03,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:16:03,396 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-23 18:16:03,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:16:03,396 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-23 18:16:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:16:03,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:16:03,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:16:03,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:16:03,400 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:16:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:16:03,401 INFO L82 PathProgramCache]: Analyzing trace with hash 256963252, now seen corresponding path program 1 times [2020-10-23 18:16:03,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:16:03,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472615553] [2020-10-23 18:16:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:16:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:16:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:16:03,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 18:16:03,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 18:16:03,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472615553] [2020-10-23 18:16:03,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035877195] [2020-10-23 18:16:03,628 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 [2020-10-23 18:16:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:16:03,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:16:03,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 18:16:03,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:16:03,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-10-23 18:16:03,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741674829] [2020-10-23 18:16:03,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:16:03,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:16:03,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:16:03,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:16:03,779 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 10 states. [2020-10-23 18:16:04,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:16:04,071 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-23 18:16:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:16:04,071 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-23 18:16:04,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:16:04,073 INFO L225 Difference]: With dead ends: 30 [2020-10-23 18:16:04,073 INFO L226 Difference]: Without dead ends: 25 [2020-10-23 18:16:04,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-23 18:16:04,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-23 18:16:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-23 18:16:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-23 18:16:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-23 18:16:04,083 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-10-23 18:16:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:16:04,083 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-23 18:16:04,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:16:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-23 18:16:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:16:04,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:16:04,085 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:16:04,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-23 18:16:04,301 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:16:04,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:16:04,303 INFO L82 PathProgramCache]: Analyzing trace with hash 2059612612, now seen corresponding path program 1 times [2020-10-23 18:16:04,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:16:04,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873533643] [2020-10-23 18:16:04,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:16:04,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:16:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:04,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:16:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:04,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 18:16:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:04,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 18:16:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:16:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-23 18:16:04,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873533643] [2020-10-23 18:16:04,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:16:04,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:16:04,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199082976] [2020-10-23 18:16:04,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:16:04,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:16:04,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:16:04,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:16:04,470 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-23 18:16:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:16:04,642 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-10-23 18:16:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 18:16:04,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-10-23 18:16:04,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:16:04,643 INFO L225 Difference]: With dead ends: 25 [2020-10-23 18:16:04,643 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:16:04,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:16:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:16:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:16:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:16:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:16:04,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-10-23 18:16:04,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:16:04,645 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:16:04,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:16:04,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:16:04,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:16:04,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:16:04,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:16:04,761 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-23 18:16:04,761 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-23 18:16:04,761 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-23 18:16:04,762 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-23 18:16:04,762 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:16:04,762 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-23 18:16:04,762 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:16:04,762 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:16:04,763 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 18:16:04,763 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:16:04,763 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:16:04,763 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 13 19) the Hoare annotation is: true [2020-10-23 18:16:04,763 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 19) no Hoare annotation was computed. [2020-10-23 18:16:04,763 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: false [2020-10-23 18:16:04,763 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L277 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point L16-2(lines 13 19) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-10-23 18:16:04,764 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-23 18:16:04,765 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-10-23 18:16:04,765 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-10-23 18:16:04,765 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-10-23 18:16:04,765 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-10-23 18:16:04,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:16:04 BoogieIcfgContainer [2020-10-23 18:16:04,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:16:04,774 INFO L168 Benchmark]: Toolchain (without parser) took 3520.05 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.4 MB in the beginning and 126.0 MB in the end (delta: 397.5 kB). Peak memory consumption was 31.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:16:04,775 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:16:04,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 116.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:16:04,777 INFO L168 Benchmark]: Boogie Preprocessor took 54.98 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:16:04,778 INFO L168 Benchmark]: RCFGBuilder took 559.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 102.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:16:04,779 INFO L168 Benchmark]: TraceAbstraction took 2662.63 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.3 MB in the beginning and 126.0 MB in the end (delta: -23.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. [2020-10-23 18:16:04,783 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 151.0 MB. Free memory was 122.9 MB in the beginning and 122.8 MB in the end (delta: 76.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 229.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 116.8 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.98 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 559.17 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 102.8 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2662.63 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.3 MB in the beginning and 126.0 MB in the end (delta: -23.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 58 SDslu, 110 SDs, 0 SdLazy, 228 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, 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, 9 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 39 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 5999 SizeOfPredicates, 2 NumberOfNonLiveVariables, 117 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...